David Harrison wrote:

>  They were probably in survival mode.  Survival mode would dictate cooking
> meat.  The pathogens in raw meat would likely kill our ancestors much quicker
> than any possible loss of nutrients in cooked food.
>

And actually improves the nutritional content of many foods.

 I understand that bear meat is often contaminated with
parasites, as is pig. Both of these are among the high fat meats.