Tag: Lead Exposure

Lead Poisoning in Adults: Symptoms, Signs and When to Get Tested

Lead poisoning in adults most often shows up as vague, everyday complaints: headaches, tiredness, joint and muscle pain, stomach pain or constipation, trouble concentrating or remembering, mood changes and higher blood pressure. Many adults with lead in their blood have no symptoms at all, which is why the CDC and its toxic substances agency, ATSDR, say a blood lead test is the way to know.

Nurse checking an adult's blood pressure in a clinic

In short: lead affects almost every system in an adult’s body. Official sources link it to high blood pressure, nervous system problems (headache, fatigue, poor concentration, memory loss, depression and irritability, tingling in the hands or feet), joint and muscle pain, stomach pain, kidney damage, anemia, and fertility problems in men and women, including lower sperm counts and abnormal sperm. In pregnancy, lead is linked to miscarriage and to babies born too early or too small. At very high levels lead can injure the brain (encephalopathy) and cause seizures, coma and death. Symptoms alone cannot tell you whether lead is the cause; a blood lead test ordered by a health care provider can. For urgent questions call Poison Control at 1-800-222-1222, and call 911 for severe symptoms such as seizures.

This page explains what the CDC, NIOSH, ATSDR, NIEHS, OSHA, WHO and MedlinePlus say about lead poisoning symptoms in adults. It is not medical advice. Only a health care provider can decide what your symptoms mean and what to do next. For symptoms in children, see our main lead poisoning symptoms guide; for the bigger picture, start at lead poisoning.

Common signs of lead poisoning in adults

Adults absorb less of the lead they swallow than young children do, the WHO notes, and ATSDR says adults show nervous system symptoms at higher blood lead levels than children. But lead builds up over months and years, mostly in bone, and the signs tend to creep in slowly. Here is what official sources list, grouped the way you might notice them:

High blood pressure. NIOSH lists increased blood pressure among the effects of long-term exposure, the WHO names a higher risk of high blood pressure as a long-term harm in adults, and NIEHS says blood lead levels below 10 µg/dL are associated with increases in blood pressure and hypertension.
Joint and muscle pain. ATSDR lists muscle aches at low exposure and joint pain (arthralgia) at moderate exposure. OSHA says workers above 40 µg/dL begin to have joint pain and muscle pain (myalgia).
Headaches and fatigue. Headache, exhaustion and weakness are on NIOSH’s list for high short-term exposure; ATSDR lists mild fatigue at low exposure and general fatigue and headache at moderate exposure; OSHA adds sleep disturbance.
Stomach pain and constipation. NIOSH lists stomach pain, nausea and constipation for long-term exposure, and MedlinePlus says stomach pain and cramping are usually the first sign of a high, toxic dose. ATSDR notes that severe cramping (lead colic) can be mistaken for appendicitis.
Memory and concentration problems. NIOSH lists memory loss, distraction and forgetfulness. ATSDR lists difficulty concentrating, and in lead-exposed workers impaired concentration, slower reaction time and reduced hand dexterity.
Mood changes. NIOSH names depression, irritability and altered moods or behavior; ATSDR adds increased nervousness and lethargy.
Tingling or pain in the hands and feet. NIOSH lists pain or tingling in the hands or feet. ATSDR describes slowed nerve conduction and wrist weakness (“wrist drop”) as late signs in workers with long, high exposure.
Fertility problems. NIOSH lists fertility problems in men and women. ATSDR says occupational exposure may lower total sperm counts and increase abnormal sperm, and NIEHS links blood lead above 15 µg/dL to lower sperm counts and motility and to delayed conception. ATSDR also lists decreased libido and impotence among symptoms in exposed workers.
Pregnancy loss and early birth. The CDC says lead in a pregnant person’s blood raises the risk of miscarriage and of a baby being born too early or too small; the WHO says lead exposure in pregnancy can cause reduced fetal growth and preterm birth.

Some effects cause no symptoms you would notice. Kidney damage and anemia, for example, usually show up only in blood and urine tests. ATSDR adds that lead-induced anemia in adults is not common and appears only when blood lead has been high for a long time.

Lead toxicity in adults, system by system

ATSDR’s course for clinicians says lead serves no useful purpose in the body and can affect every organ system. This table sums up what each agency lists for adults.

Body system	Symptoms or effects in adults	Source
Heart and blood vessels	Increased blood pressure and hypertension; possible links to heart disease and stroke	NIOSH, NIEHS, WHO, ATSDR
Brain and nerves	Headache, fatigue, memory loss, forgetfulness, difficulty concentrating, tremor, tingling or pain in hands and feet; at very high levels encephalopathy, seizures, coma	NIOSH, ATSDR, OSHA, MedlinePlus
Mood and behavior	Depression, irritability, altered moods, nervousness, lethargy	NIOSH, ATSDR
Muscles and joints	Muscle aches (myalgia), joint pain (arthralgia), weakness	ATSDR, OSHA, NIOSH
Digestive system	Stomach pain, nausea, vomiting, constipation, loss of appetite, weight loss, metallic taste; severe cramping (colic) at high levels	NIOSH, ATSDR, MedlinePlus
Kidneys	Decreased kidney function, kidney damage	NIEHS, WHO, NIOSH
Blood	Anemia (uncommon in adults; seen with long, high exposure)	ATSDR, NIOSH, WHO
Male reproduction	Lower sperm counts, abnormal sperm, reduced motility; decreased libido, impotence	ATSDR, NIEHS, OSHA
Female reproduction and pregnancy	Delayed conception; miscarriage; baby born too early or too small	NIEHS, ATSDR, CDC, WHO
Other	Decreased lung function, bone or tooth loss, more infections	NIOSH

For how these effects play out over years, and which ones can last, see effects of lead poisoning.

How symptoms change with the level of exposure

ATSDR describes a “continuum” of signs and symptoms that tend to grow as exposure grows. It stresses that this is only a guide: symptoms vary from person to person, and no exact blood lead number can be attached to each stage.

Lowest exposure: the person may seem to have no symptoms, while subtle effects on thinking, learning and memory are possible.
Low exposure: irritability, lethargy, mild fatigue, muscle aches or tingling, occasional stomach discomfort.
Moderate exposure: joint pain, constipation, difficulty concentrating and muscles that tire easily, stomach pain, general fatigue, headache, tremor, vomiting, weight loss.
High exposure: intermittent severe stomach cramps (colic); encephalopathy that can quickly lead to seizures, a change in consciousness, coma and death; weakness or paralysis.

ATSDR says symptomatic lead poisoning in adults generally comes with blood lead levels of 40 to 60 µg/dL, and severe toxicity is often seen at 100 µg/dL or more. OSHA’s health-effects page for workers gives a similar picture:

Adult blood lead level	What OSHA says is associated
As low as 10 µg/dL (chronic exposure)	Impaired kidney function, high blood pressure, nervous system and behavioral effects, cognitive decline later in life
Above 20 µg/dL	Subtle effects on thinking; effects on sperm and semen quality; delayed conception
20 to 40 µg/dL	Cognitive aging, poorer hand-eye coordination, slower reactions, attention problems
Above 40 µg/dL	Symptoms begin: headache, fatigue, sleep disturbance, joint pain, muscle pain, loss of appetite, constipation
Above 60 µg/dL (much less common today)	Convulsions, coma and in some cases death; anemia, nerve damage, kidney scarring, severe stomach cramps

The point to take from both sources: by the time an adult feels clearly unwell from lead, blood lead is usually well above the levels where quieter harm, such as rising blood pressure or reduced kidney function, has already been found. Our blood lead levels guide explains what the numbers mean.

Why symptoms are often vague or missing

NIOSH says lead symptoms are similar to those of other illnesses, may develop slowly and can be overlooked. ATSDR notes that many people with lead poisoning have no symptoms, and that lead is often missed or misdiagnosed because tiredness, headaches, stomach pain and high blood pressure have so many other causes.

The NIEHS adds that health effects in adults have been found at blood lead levels below 5 µg/dL, such as decreased kidney function, and the WHO says there is no known safe blood lead concentration. In other words, feeling fine does not mean lead is doing nothing, and feeling unwell does not mean lead is the cause.

Very high levels: encephalopathy and seizures

Severe lead poisoning is rare in US adults today, but it still happens, mostly through work or contaminated products. MedlinePlus lists the signs of very high lead levels as vomiting, internal bleeding, a staggering walk, muscle weakness, seizures and coma. ATSDR describes lead encephalopathy (swelling and injury of the brain) as able to progress suddenly to seizures, coma and death, and says warning signs that can come first include dullness, irritability, memory loss, muscle tremor and a poor attention span.

These are emergencies. MedlinePlus says to call 911 right away for severe symptoms such as vomiting or seizures.

Where adults are exposed to lead

The NIEHS says most adults with elevated blood lead were exposed at work. The main sources, briefly:

Jobs: renovation, painting and demolition of older buildings, bridge and steel-structure work, battery making and recycling, smelting and foundries, welding and cutting, mining, firing ranges, radiator repair.
Hobbies: casting bullets or fishing weights, target shooting, stained glass, lead glazes and pigments.
Home renovation in a house built before 1978, when lead paint was still sold for homes.
Imported products: some traditional or Ayurvedic remedies, cosmetics such as kohl, and recalled spices, including cinnamon.
Drinking water from lead service lines, lead solder or older brass fixtures.

NIOSH also warns that workers can carry lead dust home on clothes, shoes and hair, putting children and pregnant family members at risk. Our guide to lead testing for adults covers each of these in detail, including what OSHA requires employers to provide.

Symptoms are not a diagnosis: a blood lead test is

No list of symptoms can confirm or rule out lead poisoning. The CDC calls a blood lead test the best way to assess a person’s exposure, and ATSDR tells clinicians that lead can only be diagnosed early if they suspect it behind common, nonspecific complaints. The test uses a blood sample drawn by a health care provider and sent to a laboratory. Home swab kits test surfaces like paint, not people.

If you have symptoms on this page and a possible source of lead, tell your doctor about your job, hobbies, home and any imported remedies, cosmetics or spices, and ask whether a blood lead test makes sense. Our lead poisoning test guide explains how the test works.

When to call a doctor, Poison Control or 911

Situation	Who to call
Seizures, repeated vomiting, collapse or trouble breathing	911 right away
Symptoms you think may be from lead, or you swallowed or breathed something that may contain a lot of lead	Poison Control, 1-800-222-1222 (free and confidential, 24/7)
Vague symptoms and a possible ongoing source (work, hobby, renovation, remedy, water)	Your health care provider or local health department, to ask about a blood lead test
You work with lead	Your employer’s medical program and your own doctor; tell your family’s doctors too
You are pregnant or planning a pregnancy and may be exposed	Your prenatal care provider

MedlinePlus notes that for suspected low-level exposure an emergency room visit is usually not needed unless the exposure was a high dose.

What happens after a high result

Treatment is a medical decision: your doctor decides, often with the local health department or a medical toxicologist. The first step official sources describe is always the same, finding the source and stopping the exposure. Do not try supplements, “detox” products or anything sold to remove lead from the body. Our lead poisoning treatment page explains what doctors consider, lead poisoning recovery covers what to expect afterwards, and lead poisoning statistics has the national numbers.

Frequently asked questions

What are the first signs of lead poisoning in adults?

Often there are none. When symptoms appear, ATSDR lists irritability, tiredness, muscle aches or tingling and occasional stomach discomfort among the earliest. MedlinePlus says stomach pain and cramping are usually the first sign of a high, toxic dose.

Can lead poisoning cause high blood pressure?

Yes. NIOSH, NIEHS, ATSDR and the WHO all link lead to higher blood pressure in adults, and NIEHS says the association is seen at blood lead levels below 10 µg/dL. High blood pressure has many causes, so only testing can show whether lead plays a part.

Can lead affect fertility in men and women?

Yes. ATSDR says occupational exposure may lower sperm counts and increase abnormal sperm, and NIEHS links blood lead above 15 µg/dL to lower sperm counts and motility and to delayed conception. In pregnancy, the CDC links lead to miscarriage and to babies born too early or too small.

Can I have lead poisoning without symptoms?

Yes. ATSDR says many people with lead poisoning have no symptoms, and NIEHS reports effects such as decreased kidney function at low levels. A blood lead test is the only way to know.

Is lead poisoning in adults the same as lead toxicity?

The terms are used interchangeably. ATSDR’s clinician course is titled “Lead Toxicity,” and it covers the same symptoms and effects described on this page.

October 10, 2026

Lead Poisoning Causes and Prevention: Sources and Steps

Lead poisoning is caused by swallowing or breathing in lead, and in the US the most common source is dust from old lead-based paint. Other causes include tap water that runs through lead pipes or fixtures, contaminated soil, lead brought home from work or hobbies, and some imported spices, remedies, cosmetics and dishes.

A family wiping window sills during cleaning

In short: lead gets into the body mainly through the mouth (dust on hands, toys and food; paint chips; water) and through the lungs (dust and fumes). Touching lead matters mostly because lead on the hands ends up being swallowed; official sources describe skin absorption of common lead compounds as a much smaller route. Prevention means finding the source before anyone is exposed: test older homes for paint, dust and soil hazards, check your water, keep dust down with wet cleaning and handwashing, leave work lead at work, and avoid products named in FDA and CPSC warnings. If you are worried about exposure, ask a doctor about a blood test or call Poison Control at 1-800-222-1222.

This guide is based on the CDC, EPA, NIOSH, ATSDR, FDA and CPSC. It is general information, not medical advice; our lead poisoning hub has the overview. For what happens in the body, see effects of lead poisoning; for warning signs, see lead poisoning symptoms.

How lead gets into the body

Swallowing (ingestion). The main route for young children. The EPA says children crawl, play on floors and put hands, toys and other objects in their mouths, so they swallow settled dust and soil. The EPA’s 2024 dust-lead rule calls hand-to-mouth contact with floor and surface dust the main pathway of exposure for young children. Adults and children also swallow lead in water, food, spices and remedies.
Breathing (inhalation). Fine dust or fumes from sanding, scraping, cutting or heating painted surfaces, from some jobs such as construction, mining and lead-acid battery recycling, and from hobbies that heat or melt lead. ATSDR says the effects are the same whether lead is breathed in or swallowed.
Skin. See the next section.
Before birth. The CDC says lead stored in a mother’s bones can be released during pregnancy and reach the baby.

Can you get lead poisoning from touching lead?

Touching lead is a risk mainly because of what happens next. Lead dust on the hands gets onto food, cigarettes, toys and fingers and is swallowed. ATSDR’s toxicological profile for lead says the common (inorganic) forms of lead can be absorbed through the skin, but much less efficiently than by breathing or swallowing, apart from hand-to-mouth transfer. NIOSH lists skin as one of the routes in the workplace and says lead’s health effects are the same whether it is breathed in, swallowed or absorbed through the skin.

So the practical answer is: handling a fishing sinker or an old painted window is far less likely to put lead into your body through the skin than through your mouth, but it does leave lead on your hands. Wash your hands with soap and water afterward and before eating, drinking or smoking, and keep children from handling lead objects. NIOSH tells people who work with lead to wash as much skin as they can, with lead-removal soap, before going home.

Lead poisoning from paint

Lead-based paint was banned for homes in 1978, and the CDC says homes built before then probably contain it. The EPA estimates that about three-quarters of homes built before 1978 still have some lead paint, rising to 87% of homes built before 1940. Paint in good condition is usually not a hazard, according to the EPA. It becomes one when it peels, chips or cracks, when it rubs on friction surfaces such as windows and doors, or when it is disturbed by sanding, scraping or renovation, which can create large amounts of fine dust.

The CDC lists lead dust as the most common source of exposure for young children. Our lead paint testing hub explains swab kits, lab tests and professional inspections, and is lead paint dangerous? covers when it is a hazard. Any paid renovation work in a pre-1978 home must follow the EPA’s lead-safe RRP rule.

Lead poisoning from water

Lead usually gets into drinking water from the plumbing, not from the river or well that supplies it. The EPA says lead service lines are the most significant source where they exist, and that homes built before 1986 are more likely to have lead pipes, fixtures and solder. Without a lead service line, brass or chrome-plated brass faucets and lead solder are the most common sources. You cannot see, taste or smell lead in water; a test is the only way to know.

The EPA’s steps: use only cold water for drinking, cooking and baby formula; know that boiling does not remove lead; run the tap before drinking if water has sat for hours (showering or laundry also flushes pipes); clean faucet aerators; and if you use a filter, choose one certified to remove lead and replace the cartridge as directed. See lead in water testing, lead pipes and lead water filters.

Lead in soil and outdoor dust

The EPA says lead in soil comes mainly from old paint along the drip line of older buildings, past use of leaded gasoline near busy roads, and industry such as smelters and battery sites, and that it does not break down over time. Children are exposed when they play in bare soil or when it is tracked indoors. The EPA’s steps: cover bare soil with grass, mulch or other cover, keep children from playing in bare soil near older buildings, use doormats and take shoes off at the door. Gardeners should follow the EPA’s healthy gardening advice. Our dust and soil testing hub explains lab soil tests.

Jobs and hobbies: take-home lead

Most adults with high blood lead are exposed at work, according to NIEHS, in jobs such as construction, mining, welding and battery manufacturing. NIOSH warns that workers can carry lead dust home on their clothes, shoes and hair, putting their families, especially children and pregnant women, at risk. The CDC also names hobbies, such as stained glass work, that involve lead-based products. NIOSH’s steps for workers:

Change into work clothes and shoes that stay at work, and change back before going home.
Shower and wash your hair before leaving work if showers are provided; otherwise wash as much skin as you can with lead-removal soap.
Don’t take home tools, scrap or packaging that may have lead on them.
Store work clothes in a closed plastic bag, away from other clothes, and wash and dry them alone.

Imported products, spices and cosmetics

Federal agencies have found lead in a range of consumer goods, most often imported ones:

Product	What the agency says	Our guide
Spices	FDA has issued alerts on ground cinnamon from several brands with elevated lead; in 2023 cinnamon in applesauce pouches was linked to more than 500 reported cases of lead exposure.	Lead in cinnamon and spices
Cosmetics	FDA warns that kohl, kajal and surma eye cosmetics can contain lead and use color additives that are not approved in the US.	Lead in household items
Traditional remedies and candies	The CDC lists some imported candies and traditional medicines, such as azarcon and greta.	Lead in household items
Pottery and cookware	FDA warns about some traditional lead-glazed pottery and some imported aluminum and brass cookware that may leach lead.	Lead in pottery and dishes
Toys and jewelry	The CDC names some imported and older toys and toy jewelry; CPSC limits lead in children’s products.	Lead in toys and jewelry

Check the FDA and CPSC recall pages, stop using any product named in a warning, and don’t bring home spices, remedies or cosmetics of unknown origin for children. See our lead in household items hub for testing limits: home swab kits are not made for food, spices or cosmetics.

How to prevent lead poisoning: CDC and EPA steps

The CDC calls removing lead hazards before a child is exposed, primary prevention, the most effective approach. These steps come from the CDC and EPA:

Know your home. If it was built before 1978, have it checked for lead paint and dust by a certified inspector or risk assessor. Find one in our professional directory.
Keep dust down. Wet-mop floors and wipe windowsills and other flat surfaces with warm water and an all-purpose cleaner. Never mix ammonia and bleach.
Wash hands and toys. Wash children’s hands before eating and sleeping and after playing outside; wash toys often.
Block access to peeling paint. Keep children away from chipping paint and chewable painted surfaces such as windowsills.
Renovate safely. Hire RRP-certified firms for work in pre-1978 homes and keep children and pregnant women away until cleanup is done.
Test and manage your water. Use cold water for drinking, cooking and formula, and test if you may have lead pipes.
Shoes off, doormats down. Reduce soil and dust tracked indoors.
Leave work lead at work. Follow the NIOSH steps above.
Watch recalls. Check FDA and CPSC warnings for spices, remedies, cosmetics, dishes and toys.
Test children. Ask your child’s doctor about a blood lead test. Medicaid requires testing at 12 and 24 months; see lead and children.

Frequently asked questions

What is the most common cause of lead poisoning?

In the US, lead dust, mostly from old lead-based paint. The CDC names lead dust as the most common source for young children, and NIEHS calls it the most common way people are exposed.

Can you get lead poisoning from touching lead?

Mostly through what reaches your mouth afterward. ATSDR says skin absorption of common lead compounds is much less efficient than swallowing or breathing them. Wash your hands after handling lead and before eating.

Does boiling water remove lead?

No. The EPA says boiling does not remove lead. Use cold water, test it, and use a filter certified for lead if needed.

Is lead paint dangerous if it is not peeling?

The EPA says lead paint in good condition is usually not a hazard, but paint on windows, doors and other rubbing surfaces can make dust, and any sanding or scraping releases it. Test before you renovate.

What should I do if I think my family was exposed?

Ask your doctor or local health department about a blood lead test. If someone may have swallowed something with lead, call Poison Control at 1-800-222-1222; for severe symptoms, call 911. Then find and fix the source.

October 10, 2026

Effects of Lead Poisoning on Children and Adults

The effects of lead poisoning depend on age, how much lead and for how long, but official health agencies agree on the main ones. In children, lead harms the developing brain and nervous system, with effects on learning, attention and behavior; in adults, it is linked to higher blood pressure, kidney damage and fertility problems, and some effects in both can be permanent.

An adult having blood pressure checked by a nurse

In short: the CDC says no safe blood lead level in children has been identified, and the World Health Organization says there is no known safe blood lead concentration. Even low levels in children are associated with lower IQ scores and school achievement and with attention and behavior problems, according to the CDC and NIEHS. In adults, NIEHS links levels below 10 µg/dL to higher blood pressure and reduced kidney function, and NIOSH lists anemia, nerve and brain damage and infertility at high exposure. Because damage may not be reversible, prevention and early testing matter most. If you are worried, talk to a doctor or your local health department, or call Poison Control at 1-800-222-1222.

This page explains what the CDC, the National Institutes of Health (through NIEHS and its National Toxicology Program), NIOSH and WHO publish. It is not a diagnosis or medical advice. For an overview of the topic, start at our lead poisoning hub.

Lead toxicity: why lead harms the body

Lead toxicity is the medical term for the harm lead does once it is inside the body. Lead travels in the blood, reaches the brain, kidneys and other organs, and is stored in bones and teeth, the WHO explains. Stored lead can move back into the blood years later, for example during pregnancy, and reach a developing baby.

Doctors measure exposure with a blood lead test, reported in micrograms per deciliter (µg/dL). The CDC’s blood lead reference value for children is 3.5 µg/dL. That number marks the top 2.5% of US children aged 1 to 5; it is a screening tool, not a line below which lead is harmless.

Effects of lead on children

Children are the main concern for three reasons the CDC and WHO describe: they put hands and objects in their mouths, so they swallow more dust and soil; their bodies absorb more of the lead they swallow than adults do; and their brains are still developing. Children under 6 are the most likely to be exposed, the CDC says.

The CDC lists these effects of lead exposure in children:

Damage to the brain and nervous system
Slowed growth and development
Learning and behavior problems
Hearing and speech problems

The CDC adds that these can show up as lower IQ, a shorter attention span and doing less well in school. The WHO describes reduced attention span and increased antisocial behavior, and says lead exposure in children also causes anemia, high blood pressure, kidney problems and harm to the immune and reproductive systems.

Most of this happens quietly. The CDC says most children with lead in their blood have no obvious immediate symptoms, which is why testing matters more than watching for signs. Our lead poisoning symptoms guide lists the signs that do appear, mostly at higher levels, and our lead and children guide covers screening ages and prevention.

Effects at low levels

NIEHS, part of the NIH, summarizes the research by blood lead level. It says health effects in children are found at levels below 5 µg/dL and may include lower IQ scores and academic achievement, and that levels at or below 10 µg/dL are associated with more behavioral effects and delayed puberty. The National Toxicology Program’s 2012 review of low-level lead concluded there is evidence of harm in both children and adults below 10 µg/dL and, for some effects, below 5 µg/dL.

These are associations found across many studies of groups of people. They describe risk across a population; they cannot predict what will happen to one particular child. A child’s doctor is the right person to talk to about a specific result.

Effects at very high levels

At very high levels, lead can cause severe illness. The NIH’s MedlinePlus lists vomiting, a staggering walk, muscle weakness, seizures and coma. The WHO says children who survive severe lead poisoning may be left with permanent intellectual disability and behavior disorders. These are medical emergencies: call 911.

Effects of lead on adults

Most adults with high blood lead are exposed at work, according to NIEHS, in jobs such as construction, mining, welding and battery manufacturing. Others are exposed through home renovation, hobbies or contaminated products.

Body system	What official sources say
Heart and blood pressure	NIEHS: levels below 10 µg/dL are associated with increases in blood pressure; above 15 µg/dL with cardiovascular effects. WHO: increased risk of high blood pressure and cardiovascular problems. NIOSH lists heart disease.
Kidneys	NIEHS: levels below 10 µg/dL are associated with decreased kidney function, and even below 5 µg/dL may decrease it. WHO and NIOSH list kidney damage.
Brain and nerves	NIOSH: high exposure may cause neurologic and brain damage; long-term exposure can bring depression, irritability, mood changes, distraction and forgetfulness, and pain or tingling in the hands or feet.
Reproduction	NIOSH: infertility in both men and women. NIEHS links levels above 15 µg/dL to fertility problems.
Blood	NIOSH and ATSDR: anemia.
Other	NIOSH also lists hearing damage, decreased lung function, bone or tooth loss and more infections, and says lead is possibly linked to cancer.

NIOSH notes that these effects are the same whether lead is breathed in, swallowed or absorbed through the skin, that symptoms look like those of other illnesses and may develop slowly, and that very high exposure can kill. If you work with lead, tell your doctor.

Effects during pregnancy

Lead crosses the placenta. The CDC says lead stored in a mother’s bones can be released into the blood during pregnancy, and that lead exposure in pregnancy can raise the risk of miscarriage, of a baby being born too early or too small, and of harm to the baby’s brain, kidneys and nervous system. NIEHS says maternal blood lead levels even below 5 µg/dL are associated with reduced fetal growth, and the WHO lists reduced fetal growth and preterm birth. If you are pregnant and think you may have been exposed, the CDC’s advice is to talk to your health care provider.

Long-term effects of lead poisoning

The official wording here is careful, and so are we. What the agencies say:

CDC: “The effects of lead poisoning can be permanent and disabling.”
WHO: lead can permanently affect children’s brain development, and lead causes long-term harm in adults, including increased risk of high blood pressure.
NIEHS: many effects are permanent, and research suggests some psychological effects of childhood exposure may not appear until adulthood. NIEHS-funded research has also linked early-life lead exposure with psychiatric disorders and substance abuse.
WHO, worldwide: citing estimates from the Institute for Health Metrics and Evaluation, more than 3.5 million deaths in 2023 were attributed to lead exposure, mainly through effects on the heart and blood vessels.

A few cautions help read this research well. Many long-term findings come from studies that follow groups of people over time, and they show links, not certainty for any one person. Global death estimates are models, and they include countries with far higher exposure than the US. And lead stored in bone means that exposure in the past can still matter today, which is one reason doctors ask about old jobs, hobbies and homes.

Can the effects be reversed?

Blood lead levels can come down once the source is removed, and doctors can treat very high levels. But treatment does not undo damage that has already happened, and the CDC and WHO both describe some effects as permanent. That is why the CDC’s follow-up for children includes early educational services and developmental checks alongside removing the lead. Our guide to lead poisoning treatment explains what doctors and health departments do at each blood lead level.

Why prevention matters most

Because damage may be permanent and often has no symptoms, the CDC’s approach is to remove lead hazards before a child is exposed, which it calls primary prevention. In most US homes that means:

Old paint and dust. Homes built before 1978 probably contain lead-based paint, the CDC says, and peeling paint and renovation dust are the most common hazards. See lead paint testing and dust and soil testing.
Water. Lead pipes, solder and some brass fixtures can add lead to tap water. See lead in water testing.
Products. Some imported spices, candies, remedies, cosmetics, pottery, toys and jewelry. See lead in household items.
Work and hobbies. Lead dust carried home on clothes, shoes and hair.

Our guide to lead poisoning causes and prevention covers each source and the CDC and EPA steps in detail. When a home needs inspection or repair, use a certified professional from our directory.

Frequently asked questions

What are the long-term effects of lead poisoning?

In children, official sources describe lasting effects on learning, attention, behavior and development; in adults, higher blood pressure, heart and kidney problems and fertility effects. The CDC says effects can be permanent. How a specific person is affected depends on the level and length of exposure.

Is lead toxicity the same as lead poisoning?

The terms are used for the same problem: harm from lead in the body. Health agencies also talk about lead exposure, meaning any lead taken in, since no safe level has been identified in children.

Can a small amount of lead cause harm?

NIEHS says health effects in children are found below 5 µg/dL, and the CDC says no safe level in children has been identified. That is why doctors take any detectable level seriously and look for the source.

Do adults recover from lead exposure?

Blood levels fall once exposure stops, but lead stored in bone can stay for years, and some effects may last. An adult with possible exposure should talk to a doctor, who can order a blood test and advise on follow-up.

How do I know if my child has been affected?

Only a blood test shows exposure. Ask your child’s doctor or your local health department. If your child may have swallowed something with lead, call Poison Control at 1-800-222-1222; for severe symptoms such as a seizure, call 911.

October 10, 2026

Lead Poisoning Symptoms in Children and Adults

Lead poisoning symptoms are often vague or missing altogether, which is why so many cases are found only through a blood test. The CDC says most children with lead in their blood have no obvious immediate symptoms, and in adults the signs, such as stomach pain, headaches, tiredness or irritability, look like many other everyday illnesses.

A doctor talking with an adult patient in a clinic

In short: when symptoms do appear, official sources list stomach pain and cramping, constipation, nausea, headaches, tiredness, irritability, trouble sleeping, poor appetite and, in young children, learning, behavior and development problems. Very high levels can cause vomiting, a staggering walk, seizures or coma. A blood lead test is the only way to know. If someone has severe symptoms such as seizures or repeated vomiting, call 911. For other worries about exposure, call Poison Control at 1-800-222-1222 or talk to a doctor or your local health department.

This page explains what the CDC, its worker-safety institute NIOSH and the National Institutes of Health (through MedlinePlus) say about symptoms. It is not a diagnosis and not medical advice. Only a health care provider can tell you what a symptom means for you or your child.

Why lead poisoning is easy to miss

Lead builds up quietly. It is swallowed or breathed in as dust, chips, soil or contaminated food and water, and much of the harm happens before anyone notices anything. The CDC states plainly that most children with any lead in their blood have no obvious immediate symptoms, and that no safe blood lead level in children has been identified.

NIOSH makes the same point about adults: lead symptoms are similar to those of other illnesses and may develop slowly, so lead poisoning can be overlooked. A parent may put a toddler’s crankiness down to teething, and an adult may blame stress or poor sleep for headaches and fatigue. That is why doctors rely on a blood lead test, not on symptoms, to find exposure.

Signs of lead poisoning in children

The CDC describes the effects of lead in children mainly in terms of how it affects growing bodies and brains, rather than a short checklist of signs. According to the CDC, lead exposure in children can cause:

Damage to the brain and nervous system
Slowed growth and development
Learning and behavior problems
Hearing and speech problems

The CDC links these effects to lower IQ, a shorter attention span and doing less well in school, and notes evidence that childhood exposure can cause harm that lasts. Our page on the effects of lead poisoning explains the longer-term picture.

MedlinePlus, the National Library of Medicine’s consumer health site, adds symptoms that families sometimes notice day to day. For young children it lists the loss of developmental skills they had already learned, alongside irritability, aggressive behavior, low appetite and energy, trouble sleeping, constipation, and stomach pain and cramping. It also lists anemia (a low red blood cell count), which a doctor can find with a blood test.

None of these signs, alone or together, proves lead poisoning. They are common in children for many reasons. What they do mean is that if your child has them and also lives in or visits an older home, or may have been around one of the sources on our lead and children page, it is worth asking the pediatrician about a blood lead test.

Symptoms in adults

NIOSH, the CDC’s worker-safety institute, splits adult symptoms into two patterns.

Pattern	Symptoms NIOSH lists
High exposure over a short time	Metallic taste; stomach pain, nausea, vomiting; diarrhea or constipation; dehydration, headache, exhaustion, irritability, weakness; loss of appetite; memory loss; pain or tingling in the hands or feet
Exposure over a long time	Stomach pain, nausea and constipation; depression, irritability and mood or behavior changes; distraction and forgetfulness; higher blood pressure
Other effects NIOSH lists	Decreased lung function; bone or tooth loss; more infections in general; fertility problems in men and women

MedlinePlus also lists headaches, hearing loss, reduced sensations, difficulty getting pregnant and anemia among the symptoms of lead poisoning, and notes that stomach pain and cramping are usually the first sign of a high, toxic dose.

Adults most often meet lead at work or through hobbies: construction and renovation of older buildings, battery recycling, metal work, firing ranges, stained glass and similar crafts. NIOSH notes that workers can carry lead dust home on clothes, shoes and tools, exposing their families. If you work with lead, NIOSH advises telling your doctor and your family’s doctors.

Lead in pregnancy

The CDC says lead stored in a person’s bones from earlier exposure can be released into the blood during pregnancy, and that lead can pass to the baby. It links lead in the blood during pregnancy to a higher risk of miscarriage, of a baby being born too early or too small, and of harm to the baby’s brain, kidneys and nervous system. If you are pregnant or breastfeeding and think you may have been exposed, talk to your health care provider about testing.

Signs of very high exposure: when it is an emergency

MedlinePlus lists the signs of very high lead levels as vomiting, a staggering walk, muscle weakness, seizures and coma. These are rare, but they are emergencies.

Situation	What official sources say to do
Severe symptoms, such as seizures, repeated vomiting or loss of consciousness	Call 911 right away (MedlinePlus)
Other symptoms that might be from lead, or a child swallowed something that may contain lead	Call Poison Control at 1-800-222-1222, free and confidential, any time
You suspect ongoing low-level exposure (old paint, work dust, a recalled product)	Contact your health care provider or local health department; an emergency room visit is usually not needed unless the exposure was a high dose (MedlinePlus)

Poison Control is staffed by specialists who can tell you whether a situation needs urgent care. Keep the number in your phone.

The only way to know: a blood lead test

Because symptoms are unreliable, the CDC calls a blood lead test the best way to find out whether a child has lead poisoning, and the best way to assess a person’s exposure in general. Results are given in micrograms of lead per deciliter of blood (µg/dL). The CDC uses a blood lead reference value of 3.5 µg/dL to flag children whose levels are higher than most US children’s, and says any detectable lead means a child has been exposed.

The CDC says health care providers and most local health departments can do the test, many private insurance plans cover it, and Medicaid covers it for enrolled children. Children on Medicaid are required to be tested at 12 and 24 months, and between 24 and 72 months if they have never been tested. Our blood lead test guide explains finger-stick and venous tests, what results mean and what follow-up the CDC recommends.

Do not try to treat suspected lead poisoning at home or with supplements or products sold online. Decisions about care belong to a doctor, who can look at the test results, the source of exposure and the whole picture. Our lead poisoning treatment page explains what official guidance says doctors do.

When to ask a doctor about testing

The signs of lead poisoning are easy to miss, so risk matters more than symptoms. The CDC recommends that children at higher risk be tested. It names children who live in or regularly visit homes or buildings built before 1978, children in low-income households, children who are immigrants, refugees or recently adopted from other countries, and children who may be exposed through a household member’s job or hobby. Talk to a doctor if:

Your home was built before 1978 and has chipping or peeling paint, or has been renovated recently. See is lead paint dangerous?
Your home has a lead service line or you are not sure. See lead pipes.
Someone in the household works with lead or has a lead-related hobby.
Your child used a recalled product, such as the 2023 cinnamon applesauce pouches. See lead in cinnamon and spices.
You use imported spices, candies, traditional remedies, cosmetics or glazed pottery that could contain lead. See lead in pottery and dishes.
Your child has any of the symptoms above and you want to rule lead out.

Finding and removing the source

A blood test tells you whether someone has been exposed; it does not tell you where the lead came from. When a child’s level is at or above the reference value, the CDC says health departments may help find the source, and doctors may recommend removing lead hazards from the home, a diet rich in iron and calcium, early educational services and repeat testing.

For the home itself, the first steps are usually checking paint, dust, water and soil. Our guides on lead paint testing, lead water testing and dust and soil testing explain the options, and you can find a certified lead inspector or risk assessor for a full investigation. Where lead comes from and how to keep it out of your home is covered in lead poisoning causes and prevention, and more on health is on our lead poisoning hub.

Frequently asked questions

What are the first signs of lead poisoning?

Often there are none. The CDC says most children with lead in their blood have no obvious immediate symptoms. MedlinePlus notes that stomach pain and cramping are usually the first sign of a high, toxic dose. Only a blood lead test can tell.

What are the symptoms of lead exposure in adults?

NIOSH lists stomach pain, nausea, constipation, headaches, tiredness, irritability, mood changes, forgetfulness, higher blood pressure, tingling in the hands or feet and fertility problems, among others. Because they resemble other illnesses, tell your doctor if you may have been exposed.

Can lead poisoning symptoms go away?

Symptoms can come and go, which is one reason they are unreliable. The CDC says even low levels can affect children and that some effects can last. Ask a doctor about testing and follow-up rather than waiting to see whether symptoms fade.

How fast do symptoms appear?

It depends on how much lead and over how long. NIOSH separates short, high exposures, which can cause symptoms such as stomach pain and vomiting, from long, low exposures, which build up slowly. Many children with lead in their blood show nothing at all.

Who should I call if I think my child swallowed something with lead?

Call Poison Control at 1-800-222-1222. If your child has severe symptoms such as a seizure, trouble breathing or repeated vomiting, call 911.

Is there a home test for lead poisoning?

Lead in a person is measured with a blood test ordered by a health care provider or local health department. Home swab kits are made for surfaces like paint, not for people. Ask your doctor or health department about blood testing.

October 10, 2026