Can PFAS from household products cause abnormal heart rhythms in older adults?

What's actually in it

PFAS accumulate in your body over a lifetime. By the time you reach your 60s and 70s, decades of exposure from nonstick cookware, stain-resistant fabrics, waterproof clothing, and contaminated drinking water have built up to their highest levels. Your heart, which beats over 100,000 times a day, is especially sensitive to chemicals that interfere with electrical signaling.

What the research says

A 2026 study in Environ Health Perspect examined the link between PFAS blood levels and electrocardiographic (ECG) abnormalities in older adults. The researchers combined human data with lab experiments on heart cells to understand the mechanism.

Older adults with higher levels of PFOS, PFOA, and PFHxS in their blood showed more ECG irregularities, including prolonged QT intervals and changes in heart rhythm patterns. A prolonged QT interval means the heart takes too long to recharge between beats, which raises the risk of dangerous arrhythmias.

In the lab, PFAS directly affected ion channels in heart muscle cells. These channels control the flow of sodium, potassium, and calcium that generates each heartbeat. When PFAS blocked or slowed these channels, the electrical signal got disrupted.

The effects were dose-dependent: higher PFAS levels meant more pronounced ECG changes. For older adults already at risk for heart rhythm problems, reducing PFAS exposure is especially important. Replace old nonstick pans, filter your tap water, and avoid stain-resistant fabric treatments in your home.