Summer heat may do more than cause discomfort — it could actually speed up aging in older adults. A new study in Science Advances found that long periods of high temperatures may accelerate biological aging, with dehydration posing one of the greatest risks for seniors.

As people age, their sense of thirst declines, leading many to drink too little water. Some avoid fluids to reduce bathroom trips, which can make things worse in hot weather. Combined with certain medications, this raises the risk of heatstroke, urinary tract infections, and confusion that can resemble dementia.

Health experts urge seniors to stay hydrated, eat water-rich foods, and avoid going outside during peak heat. Checking that cooling systems work and keeping indoor spaces safe is also critical. Families and caregivers should keep a close eye on older loved ones to help protect their health and independence during dangerously hot days.

SOURCE:

Fox News, August 22, 2025