Scientists reversed biological age in older adults in just 4 weeks

Older adults may be able to shift important markers of aging in a surprisingly short amount of time simply by changing what they eat.

New research from the University of Sydney found that Australians aged 65 to 75 who reduced either dietary fat or animal-based protein showed signs of a lower biological age after just four weeks. Biological age is an estimate of how old the body appears based on its health and physiological condition, rather than the number of years a person has been alive.

The findings were published in Aging Cell and were led by Dr. Caitlin Andrews from the University of Sydney's School of Life and Environmental Sciences.