3.5 million deaths a year, and no level of it is safe
What happened
On 15 October 2026, the World Health Organization (WHO) published an update calling on countries to speed up action against lead poisoning. It came just before International Lead Poisoning Prevention Week, which runs from 18 to 24 October 2026. The theme this year is 'From Detection to Prevention'. The message is blunt. WHO says lead exposure is linked to more than 3.5 million deaths around the world every year, and that hundreds of millions of children are affected. It also says there is no known safe level of lead exposure. WHO's latest global check found that fewer than half of all countries have confirmed legally binding controls on lead paint. Paint is one of the biggest sources of lead that children come into contact with. Bruce Gordon, acting Director of WHO's Department of Environment, Climate Change, One Health and Migration, put it simply: 'Lead poisoning should not be stealing children's potential in 2026.' He said countries need to focus on taking lead out of products and places before it ever gets into a child's body. Two bigger pieces of work are coming. WHO member states have asked for a Global Action Plan on Lead Mitigation, which will go to the World Health Assembly in 2027. WHO also plans to launch a practical guide for countries, called the PREVENT Technical Package, in 2027. In the meantime, WHO is helping build up laboratory testing. That work covers Brazil, five Indian states, Nepal, and six countries in sub-Saharan Africa: Ethiopia, Ghana, Malawi, Rwanda, South Africa and Tanzania.
Why this matters
Lead is a metal. It has no job to do in the human body, and the body cannot use it or easily get rid of it. In children, lead can harm the developing brain and nervous system. The damage can be permanent. It can show up as a lower IQ, trouble concentrating, behaviour difficulties and problems at school. In severe cases, lead poisoning can cause fits, coma or death. In adults, long-term exposure raises the risk of high blood pressure, heart and circulation problems, and kidney damage. Most of the deaths WHO counts come from the effects on the heart and blood vessels. The part that worries doctors most is how quiet it is. Early on, there are often no symptoms at all. A child can be absorbing lead for months without anyone noticing. By the time there are signs, some of the harm is already done. There is one piece of good news, and it is a big one. WHO says the health effects of lead exposure are entirely preventable. This is not a disease waiting for a cure. It is a problem of removing a metal from paint, pipes, pots and pots of imported spice.
What the evidence actually says
The headline figure comes from the Institute for Health Metrics and Evaluation, which WHO cites. It estimates that lead exposure was linked to more than 3.5 million deaths worldwide in 2023, mostly through effects on the heart and circulation. The same estimate counts more than 71.5 million years of healthy life lost. It is worth being clear about what 'linked to' means. These are modelled estimates, not a count of death certificates that say 'lead'. Lead is one risk factor among several that push up blood pressure and heart disease. The number is a best estimate of lead's share, not a tally. On children, WHO's own fact sheet is careful and specific. Blood lead levels as low as 3.5 micrograms per decilitre may still be linked to lower intelligence, behaviour difficulties and learning problems. Young children can absorb four to five times as much lead as adults from the same swallowed amount, partly because of how their bodies work and partly because small children put things in their mouths. WHO's 2021 clinical guidance says that at a blood lead level of 5 micrograms per decilitre or above, the source should be found and stopped. Pregnancy adds another route. Lead that was stored in a person's bones years earlier can be released back into the blood during pregnancy, and reach the baby. Exposure in pregnancy is linked to slower growth before birth and to premature birth. On policy, the figure WHO gives is that as of January 2024, 48% of countries had legally binding controls on lead paint. That is the gap the new global action plan is meant to close. Common sources listed by WHO include paint, cookware, cosmetics, spices, informal battery recycling and industrial contamination.
Practical advice
Most of this story is about global policy. But there are a few sensible things worth knowing in the UK. Old paint is the main one. Lead was used in household paint in Britain for a long time and was not banned for general sale until the 1990s. If your home was built or last decorated decades ago, assume older layers may contain lead. The risk is not the intact paint on the wall. It is the dust created when old paint is sanded, scraped, burnt off or allowed to flake. If you are renovating an older house, do not dry-sand old paintwork, keep children and pregnant people away from the work, damp-wipe rather than sweep, and get advice before stripping paint. Water pipes are the second. Lead pipes were used in homes built before about 1970. If you are not sure what your supply pipe is made of, your water company can usually advise and may test your water free of charge. Running the tap for a short time before drinking, if water has been standing, is a simple habit that helps. Then there are imported goods. WHO specifically names cookware, cosmetics and spices. Brightly glazed or hand-painted pottery bought abroad, some traditional remedies and some imported spice mixes have been found to contain lead. If something has no clear labelling and was not bought from a reputable UK retailer, do not use it for food. Finally, some jobs carry a risk, including battery work, soldering, scrap metal, pottery glazing and shooting ranges. If that is your work, your employer has legal duties on monitoring and protective equipment. Do not take work clothes home to wash with the family laundry. If you are genuinely worried about a child, speak to your GP. A blood test is the only way to know. Do not buy an unregulated home testing kit instead of getting proper advice.
What to know
WHO has asked countries to move faster on lead, and has set out a timetable: a global action plan to the World Health Assembly in 2027, and a practical guide for countries the same year. Fewer than half of countries have binding rules on lead paint today. The scale is large and the estimates are modelled, so treat the 3.5 million figure as a careful estimate rather than a headcount. What is not in doubt is the direction of the evidence: no safe level has been identified, children are more vulnerable than adults, and the harm is preventable rather than treatable. In practical terms, the UK risks are mostly old paint dust, old pipes and imported goods without proper labelling. Those are all things a household can check. Sources: World Health Organization, 'Countries move to accelerate action against lead poisoning', 15 October 2026, https://www.who.int/news/item/15-10-2026-countries-move-to-accelerate-action-against-lead-poisoning; World Health Organization, 'Lead poisoning and health' (fact sheet), last updated 10 June 2026, https://www.who.int/news-room/fact-sheets/detail/lead-poisoning-and-health. This article is for general information and does not replace advice from a doctor, pharmacist or other qualified healthcare professional. If you think you or your child has been exposed to lead, speak to your GP.
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