In brief
The UK Health Security Agency on Nov. 3 announced a new study to assess exposure to PFAS and heavy metals such as lead and arsenic. Using existing Health Survey for England samples, scientists will measure pollutant levels in blood and urine; initial results will come in 2027 and may explore links to raised cholesterol and lower birth weight.
London – The United Kingdom’s Health Security Agency (UKHSA) announced on Tuesday, 3 November 2026, that it is beginning a large‑scale study to evaluate the population’s exposure to per- and polyfluoroalkyl substances, a group of chemicals commonly called "forever chemicals", as well as lead and arsenic.
UKHSA will use blood and urine samples collected through the existing Health Survey for England to determine concentrations of these chemicals in the public. Dr Edward Wynne‑Evans, director of radiation, chemicals, climate and environmental hazards at UKHSA, said the agency is "working with international partners" to monitor emerging evidence and assess potential health risks.
According to a statement from the agency, initial findings are expected in 2027. While the evidence available so far suggests that health effects are likely to be limited, the strongest data points to potential associations with raised cholesterol levels and lower birth weight.
"The evidence available to date suggests that any health effects are likely to be limited," Dr Wynne‑Evans said. He added that "the strongest evidence currently points to possible associations with raised cholesterol and lower birth weight" but that further research is needed to clarify the significance of these findings.
UKHSA currently does not recommend routine blood testing for PFAS, citing insufficient evidence to determine what medical action should follow a particular test result. The study will help fill the gaps in understanding what different exposure levels mean for long‑term health.
The agency will release the preliminary results of the study in 2027 after analysis of the 5,000 or so serum and urine samples taken for the Health Survey for England.
