A new study reported in the online Proceedings of the National Academy of Sciences offers new thoughts that cooking food made it possible for early humans to develop larger brains. The cooked food was easier to digest and made it possible for more nutrients to be available to brain cells.
Scientists have long believed there is a trade off between body size and brain cells since the brain needs about 20% of the body's total resting metabolic energy (although it's only about 2% of the body's weight.) So there just wasn't enough time in a day to gather and take in enough raw nutrients for early humans.
Hmm...food for thought when you're sitting and watching the Super Bowl game with all the cooked and snack food at your fingertips. Will bigger brains win out?