Scientists reverse liver cell aging and cut Alzheimer’s-linked protein in half

A surprising discovery suggests that rejuvenating the liver could help protect against Alzheimer’s disease and heart disease. USC researchers found that an experimental drug restored aging liver cells in rats, cutting levels of an Alzheimer’s-linked protein in half and bringing bad cholesterol down to youthful levels. The treatment also revived a previously unknown communication system that helps liver cells remove harmful substances from the bloodstream.