Calorie Restriction

The only proven way of currently extending life expectancy in a variety of mammals is undernourishment (not malnourishment) but requires further study to see whether it has undesirable side effects.

Long lived species have less response to famine so, according to Aubrey de Grey, not likely to have a big impact in humans.

Resources

More info: CR Society International

Recent News

Relative Energy Deficiency in Sport caused by under-eating

BBC - 09-Dec-2018

Athletes starving themselves causes hormone and bone problems

Low-calorie diet prevents age-related molecular changes

Medical Xpress - 25-May-2018

Short-term diets may accelerate the manifestation of aging symptoms

CR Leads to Longer Life but Less Grey Matter

Genetic Engineering & Biotechnology News (GEN) - 05-Apr-2018

New study shows caloric restriction in lemurs extended lifespan up to 50%.