Calorie Restriction: Living longer or it just seems that way

On a lighter note.

Betterhumans, a page devoted to research and study on making humans live longer, run by Ray Kurzweil (I think, it’s hard to tell, but many of the posts are attributed to him) has another article referencing calorie restriction, with a possible explanatory mechanism.

My question, as someone who believes that an allergy to chocolate might not be compatible with life, is “why”?

However, it’s worth looking at the site every so often.