Wow there is ALOT of misinformation in the original post and in the following comments.
The first evidenve of cooked food comes from the swartkrans cave site dated to at least 1 000 000 BP. The charred bones found in this sheltered site bear the chemical signatures of bones cooked in a fire with the heat of a medium sized campfire. It was probably Homo erectus (a direct ancestor of Homo sapiens) that was in control of these fires.
This EASILY provides plenty of time for our species to become adapted to cooked food. As an elucidating example the gene for lactose tolerance is very high in areas where dairy farming began earliest. That adaptation took place in a mere few thousand years.
Be careful about espousing dubious information when discussing issues that might affect peoples lifestyle choices.