[ams6110]

I think this is actually very likely to be true. Think about living as a hunter-gatherer. Some days you just won't find/catch anything. Maybe you snack on a few insects. Other days you bag an antelope or find a big patch of berries and you have more than you can eat. Alternating between fast and feast every few days seems like it would be quite common. Eating a regular 3 meals a day is probably not the norm.

[DenisM]

  So, two prehistoric men discuss cooking:
  - cooking meat should make you live longer
  - I don't know, man, my father always ate raw meat
    and he lived without any problems all the way
    till the old age of twenty one!

My point being, just because it's the old way, doesn't mean it's the better way.

[dpn]

The obvious counter to that argument is that people didn't die of obesity, we didn't have antibiotics yet. :)