Scientists Discover a Hidden Cause of Cellular Aging That Can Be Reversed

An international team found that aging cells lose phosphatidylcholine, a membrane lipid needed to keep mitochondria healthy.

When phosphatidylcholine synthesis was switched off in worms, young mitochondria quickly adopted an aged, fragmented look.

Feeding phosphatidylcholine or its precursor choline restored healthier mitochondrial structure within days.

The study points to a reversible lipid-related driver of mitochondrial aging and a possible target for diet or therapy.