Do people that eat only or most only healthy foods all their lives...do their BRAINS work better than most? if so, why?

aside from all this stuff about the heart, and etc.....what it comes down to is that MOST EVERY ORGAN and EVERY ASPEDCT OF HUMAN BODY is benefited from eating healthy , nutrients? (not eating for taste as much as eating for HEATLH BENEFITS) I noticed someone that looked to be around 70 that looked still young,... show more aside from all this stuff about the heart, and etc.....what it comes down to is that MOST EVERY ORGAN and EVERY ASPEDCT OF HUMAN BODY is benefited from eating healthy , nutrients?

(not eating for taste as much as eating for HEATLH BENEFITS)

I noticed someone that looked to be around 70 that looked still young, but most of all, lively and alert...and they eat healthy a lot...is this why? can explain?
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