>The brain runs on fat
>Sugar makes you dumb as shit
You are fucking retarded.
The brain runs on glucose, which is a form of SUGAR
https://hms.harvard.edu/news-events/publications-archive/brain/sugar-brain#:~:text=%E2%80%9CThe%20brain%20is%20dependent%20on,It%20cannot%20be%20without%20it.%E2%80%9D&text=Although%20the%20brain%20needs%20glucose,can%20be%20a%20bad%20thing.
>When was sugar first harvested?
What are you implying? Man has been harvesting all forms of plants and fruits since the beginning. Plants and fruits are typically the main source of carbs which the body breaks down into simple sugar (glucose).
>When did people first eat meat?
There is a difference between what the brain "feeds" on vs brain development. Know the difference.
>Moron.
Who's the moran?