PFAS exposure linked to weaker bone density in children, study finds

A new study suggests common 'forever chemicals' (PFAS) may reduce bone mineral density in kids, especially in the forearm. In 218 children followed from birth, researchers measured PFAS levels at birth and ages 3, 8, and 12, finding higher PFAS exposure generally associated with lower bone density at age 12. Timing mattered for different PFAS compounds, with some exposures at age 3 linked to higher bone density later, while recent exposure near preteen years linked to weaker bones. The mechanisms may involve endocrine disruption or PFAS accumulating in bone; long-term effects like fractures or osteoporosis remain uncertain. Practical steps to reduce exposure include water filtration and avoiding PFAS-heavy consumer products.