BEFORE WE ESCALATE TO HUMANS, IT'S IMPORTANT
that you be convinced beyond any reasonable doubt that in
experimental animals the CRON diet works dramatically at
slowing the aging process, preventing disease, and enhancing health.

There is now abundant hard evidence--not testimonial evidence,
not clinical anecdote, not "make the case" evidence based on plausibil-
ity arguments, and not even correlational evidence, although all these
exist in plenitude--but hard, well-controlled and steadfastly con-
firmed experimental evidence that a CRON diet will greatly extend
average and maximum life spans, postpone the onset and decrease the
frequencies of most or all of the "diseases of aging," maintain bio-
markers at levels younger than the chronological age, maintain sexual
potency, general vitality, and ability to engage in sports into advanced
age, and delay deterioration of the brain.

In 1935 Dr. Clive McCay at Cornell University first demonstrated
that if rats from the time of weaning were fed a calorically restricted
but healthful diet supplemented with vitamins and minerals, they
would live remarkably longer than normally fed rats. ¹ By 1,000 days of
age, all the normally fed rats had died, but most of the calorie-
restricted ones were still alive and active. Their growth rate and body
size had been retarded by the severe restrictive regimen, but in other
ways they seemed super healthy. If they were allowed a full diet at

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