"Any substance that can be metabolized by an organism to give energy and build tissue, is used as a source of nourishment (food and drink), and provides mental stimulus for thinking."
   
   A recent  health topic from the NY Times is encouraging calorie-restriction diets for humans.   Of course, in the same breath, we are supposed to "chow down" on a whole new class of anti-aging drugs and support government spending of $3 billion annually on research to support this preposterous idea.

   Here's a very informative piece, written by my friend Karen De Coster.