Proteins under study
From studies in yeast
, sirtuins (sir2 proteins) are believed to have some effects on aging, on cell death, on stress
resistance (such as in situations of food scarcity), etc.
.. Researchers are trying to find out if there are anti-aging effects in mammals. Some believe resveratrol activates a sirtuin and possibly extends lifespan, but so far research with mammals has not shown any such benefit.