Dietary restriction in most organisms will extend their lifespan, but most humans, including this one, don't always have the willpower.

Dietary restriction by bacterial deprivation increases life span in wild-derived nematodes.

Seminal contributions to gerontology include her research into the evolution of ageing, dietary restriction and the biology of extended lifespan mutants.

This tends to happen earliest to those of us who were the most draconian in our dietary restrictions.

Dietary restrictions vary from case to case depending on factors including insulin dose, carbohydrate intake, activity level and diabetic sensitivity.