Last updated: March 06, 2026
Medically reviewed by: NKF Patient Education Team
Lead exposure can harm kidney function and may worsen chronic kidney disease, especially in children and pregnant women.
Table of Contents
- About Lead Exposure and Kidney Function
- Understanding Lead Exposure
- How Lead Affects the Kidneys
- Who Is Most at Risk
- If You Suspect Lead Exposure in Your Environment
- Signs, Symptoms, of Lead Exposure
- Testing and Monitoring for Lead and Kidney Health
- Treatment for Lead Exposure
- Lead and Pregnancy
- Protecting Yourself from Lead Exposure
- Preparing for Your Appointment
About Lead Exposure and Kidney Function
Lead is a naturally occurring metal that is toxic to the body and can harm many organs, including the kidneys. While lead-related kidney damage is rare in the United States today, long-term exposure, even at low levels, can increase the risk of kidney disease or make chronic kidney disease (CKD) worse.
People who already have CKD, high blood pressure, or diabetes may be more sensitive to the effects of lead. Lead can build up in the body over time, especially when exposure happens for many years.
Those living in older homes, communities with aging water systems, or areas affected by industrial pollution may face higher risks of exposure. Knowing how to identify and reduce lead exposure can help protect your kidney health.
Understanding Lead Exposure
Lead is found in metal that was once widely used in paint, gasoline, plumbing materials, and other products. Although many uses have been banned in the United States, lead can still be found in:
• Old paint and dust in homes built before 1978
• Water pipes and plumbing fixtures that contain lead
• Soil contaminated by old car exhaust or industrial waste
• Certain jobs and hobbies, such as construction, auto repair, stained glass, or battery manufacturing
• Some imported items, including pottery, spices, traditional medicines, and toys
Lead can enter the body by breathing in contaminated dust or swallowing lead from water, food, soil, or objects.
Even small amounts of lead can build up in the body over time. Lead can be stored in the bones for many years and slowly released back into the bloodstream. Children absorb lead more easily than adults, and people living in older or under resourced communities may face higher risks due to housing conditions or aging water systems.
How Lead Affects the Kidneys
Your kidneys filter waste and extra fluid from your blood. Lead that enters your bloodstream can damage the tiny filtering units in your kidneys. Doctors may call this lead-related kidney toxicity.
Over time, too much lead can:
• Cause protein to leak into your urine, which is a sign of kidney damage
• Raise blood pressure, which can strain the kidneys
• Increase your risk of gout, a painful form of arthritis linked to uric acid buildup
• Make chronic kidney disease (CKD) get worse more quickly
Severe kidney damage from lead is rare in the United States and accounts for less than 1 percent of kidney failure cases. However, long-term exposure may increase risk, especially for people who already have CKD, diabetes, or high blood pressure.
Who Is Most at Risk
Lead exposure can affect anyone, but some groups face higher risk:
• Children under age 6: Their bodies absorb lead more easily, and exposure can cause lasting harm to the brain and other organs.
• Pregnant women: Lead stored in the bones can enter the bloodstream during pregnancy and harm the baby’s brain, kidneys, and nervous system.
• People with chronic kidney disease (CKD): The kidneys may not remove lead as effectively, which can increase the risk of damage.
• Workers in high risk jobs: Construction, plumbing, painting, recycling, battery manufacturing, and similar industries may increase exposure.
• People living in older or under resourced communities: Aging housing, older water systems, environmental pollution, and limited access to testing can increase exposure risk.
These are examples of social determinants of health. This means the conditions in which people live, work, and play can affect their health. Reducing lead exposure often requires community solutions, such as improving water systems, replacing old pipes, and expanding access to environmental testing and safe housing.
If You Suspect Lead Exposure in Your Environment
If you think your home, water, or neighborhood may contain lead:
- Contact your local health department. They can guide you on testing your home, water, or soil for lead.
- Ask your water company if your pipes or service lines contain lead. Many communities offer free or low-cost testing kits.
- If you use well water, ask about regular testing, since private wells are not monitored by city systems.
- Use water filters certified to remove lead and replace them as directed.
- Clean floors, windowsills, and other surfaces with a damp cloth or mop to reduce dust from old paint.
- Avoid sanding or scraping paint in older homes, as this can release lead dust into the air.
- If you rent your home, ask your landlord about past lead testing. You can also request a housing inspection through your local health department if you are concerned.
If you or your family members may have been exposed, ask your doctor about a blood test for lead and tests to check your kidney health.
Signs, Symptoms, of Lead Exposure
Lead Exposure Symptoms in Adults
Lead exposure can be hard to detect because symptoms often develop slowly. Many adults do not notice symptoms right away. Signs of lead exposure in adults may include:
• Tiredness or weakness
• Headaches
• Muscle or joint pain
• Loss of appetite or nausea
• Abdominal pain or constipation
• Problems with memory, mood, or focus
• Tingling or numbness in the hands or feet
• High blood pressure
Lead exposure may also cause changes in kidney function that do not cause symptoms at first. Blood and urine tests are often needed to detect kidney damage.
Lead Exposure Symptoms in Children
Children are more sensitive to lead than adults. Even low levels of lead in the blood can affect a child’s growth and development. There is no safe level of lead exposure in children.
Signs of lead exposure in children may include:
• Irritability or behavior changes
• Developmental delays
• Learning difficulties or trouble in school
• Trouble paying attention
• Slowed growth
• Hearing problems
• Loss of appetite or stomach pain
Because symptoms can be mild or mistaken for other conditions, a blood test is the only way to confirm lead exposure.
Testing and Monitoring for Lead and Kidney Health
Because the symptoms of lead exposure can be caused by many different conditions, a blood test is the only way to confirm lead exposure.
If you think you may have been exposed to lead, talk to your doctor. They may recommend:
- Blood test for lead: Measures how much lead is in your blood.
- Urine test (albumin to creatinine ratio or ACR): Checks for protein in the urine, which can be an early sign of kidney damage.
- Blood test to estimate glomerular filtration rate (eGFR): Shows how well your kidneys are filtering waste.
- Blood pressure check: High blood pressure can result from or worsen kidney damage.
If lead exposure is confirmed, the first step is to find and remove the source of exposure. Your doctor may monitor your blood lead level and kidney function over time.
Early testing and removing the source of lead can help protect your kidney health.
Treatment for Lead Exposure
Treatment depends on how high your blood lead level is and whether you have symptoms. The most important first step is to find and remove the source of lead exposure. Without removing the source, treatment will not be effective.
For people with mildly elevated lead levels, your doctor may:
• Monitor your blood lead level over time
• Check your kidney function with blood and urine tests
• Treat related conditions such as high blood pressure
• Recommend steps to reduce ongoing exposure
For very high blood lead levels, a treatment called chelation therapy may be used. This medicine binds to lead so it can be removed from the body through urine. Chelation therapy must be carefully monitored by a doctor, especially in people living with chronic kidney disease (CKD), because the kidneys help remove the lead-chelation complex from the body.
Healthy nutrition may also help reduce lead absorption. Eating foods with enough calcium, iron, and vitamin C can support your overall health. If you have CKD, work with your doctor or kidney dietitian to make sure your nutrition plan is safe and appropriate for your stage of kidney disease.
Ongoing follow-up care is important. Your doctor may continue to monitor your blood lead level and kidney function to make sure levels are improving and to help prevent long-term kidney damage.
Lead and Pregnancy
During pregnancy, changes in your body can cause lead stored in your bones to be released into your bloodstream. This can happen even if your exposure occurred many years ago.
Lead in the bloodstream can affect both the mother’s kidneys and the baby’s developing organs. Pregnancy already places extra stress on the kidneys. If you have chronic kidney disease (CKD) or reduced kidney function, lead exposure may increase the risk of complications.
Too much lead during pregnancy can:
• Increase the risk of miscarriage or early birth
• Cause babies to be born too small
• Affect the baby’s brain, kidneys, and nervous system
• Lead to learning or behavior problems later in childhood
Lead can also pass to a baby through breast milk in small amounts.
If you are pregnant, planning to become pregnant, or breastfeeding and have ever been exposed to lead, tell your doctor. They may recommend a blood test to check your lead level and monitor your kidney function and your baby’s development.
Protecting Yourself from Lead Exposure
You can lower your risk of lead exposure with a few simple steps:
- Test your water for lead if you live in an older home or have older plumbing.
- Run cold water for several minutes before using it for drinking or cooking.
- Avoid using hot tap water for baby formula or cooking, since hot water can contain higher levels of lead.
- Use water filters certified to remove lead and replace them as directed.
- Clean floors, windowsills, and other surfaces regularly with a damp cloth or mop to reduce dust from old paint.
- Wash hands, bottles, and toys often, especially for young children.
- Avoid sanding or scraping paint in older homes unless it is done safely by trained professionals.
- Eat a healthy diet with enough calcium, iron, and vitamin C, which may help reduce how much lead your body absorbs. If you have chronic kidney disease, talk with your doctor or kidney dietitian about a nutrition plan that is safe for you.
- If you work around lead, use recommended protective equipment and wash work clothes separately to avoid bringing lead dust home.
Preparing for Your Appointment
Questions to Ask
Ask your doctor or kidney specialist (nephrologist):
• Should I be tested for lead exposure or kidney damage?
• How often should I have my kidney function checked (eGFR, ACR)?
• What symptoms should I look for that might mean lead is affecting my kidneys?
• Can any of my current medicines increase my risk of lead buildup?
• What treatments are available if I have high lead levels and kidney disease?
• Should I see a kidney dietitian to help with foods that protect my kidneys and lower lead absorption?
Ask your local health department or water utility:
• How can I get my home or water tested for lead?
• Are there free or low-cost programs to replace lead pipes or plumbing?
• What steps can I take while waiting for results or repairs?
Ask your employer (if you work around lead):
• What protective equipment should I use at work?
• How do I safely clean or store my work clothes to avoid bringing lead dust home?
• Is my workplace required to test for lead exposure?
Ask your child’s doctor or family pediatrician:
• Should my child be tested for lead exposure?
• What steps can I take to prevent exposure at home, daycare, or school?
Ask a social worker or community health worker:
• Are there programs that help with home repairs, testing, or water filters?
• How can I find housing support if my home has unsafe lead levels?
• Are there community health programs that monitor lead exposure in my area?
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