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Diet is the behavior that’s been studied the most in terms of trying to affect thing like  aging and longevity.

There really three components of diet that seem to be impacting aging :

So the first is. How much we eat , the second is what we eat , and the third is when we eat . 

So in terms of how much we eat , a lot of science went into this idea of caloric restriction . Caloric restriction isn’t a starvation .it’s usually just about a 20 precent reduction in the overall caloric intake . The other thing , that has  been study , is this concept  of what we eat ,  a lot of research has  gone into whether things  like plant-based diet  are actually beneficial to  aging and longevity, there  seems to be some evidence ,that eating less animal products , more fruit ,veggies , more wholefoods ,it’s going to  be better overall . 

But  what scientists found , is actually fasting can (con mimic ) some of the benefits , that we’ve seen with (caloric restriction ) , so if people can perhaps minimize their eating to a small window , we think (that this  can actually recapitulate ) a lot of benefits , that we are saying in the  caloric restriction studies .