Earlier quoted context omitted.
Cooking is very likely the reason humans suddenly had access to far more calories to support a larger brain. The idea that an organ like the brain that feeds directly on glucose was supported by animal fat and protein just doesn’t hold up to serious scrutiny.
The brain is incidentally 60% fat. And all the glucose the brain requires can be synthesized from lactic acid. There are entire societies that live off of 99% meat. They live their entire lives with almost no vegetable intake whatsoever, and their brains develop and function perfectly normal. In contrast, consuming too much glucose can wreak all sorts of havoc on the brain, spurring excessive consumption, type 2 diab…
“Studies have shown that type 2 diabetes can be a risk factor for Alzheimer’s disease, vascular dementia and other types of dementia because cardiovascular problems associated with diabetes are also associated with dementia. These include:
Obesity Heart disease or family history of heart disease Impaired blood vessels Circulation problems High cholesterol High blood pressure Research has also proved that, similar to diabetes, glucose is not used properly in the brains of people with Alzheimer’s disease. ”
https://alzheimer.ca/en/Home/About-dementia/Alzheimer-s-dise...