I’ve yet to see any evidence on the effects of calorie restriction on humans. Mice are quite different from us, and all evidence on calorie restriction I’ve seen was done on mice.
Some human research is listed here.
I never saw any study on the effects of calorie restriction to attention, reflexes and cognitive abilities.
There are plenty of studies on that—e.g. start here.
Some human research is listed here.
There are plenty of studies on that—e.g. start here.