There may be no such thing as a ‘sugar rush’ - Sugar does not improve any aspect of mood and can even worsen it, according to new research using data from 31 studies, which found that sugar increases tiredness and lowers alertness within an hour after its consumption.

The majority of your body, as evolutionary adapted, is designed to be fueled by ketones, the rest that isn't fueled by ketones is designed to be fueled by a process called gluconeogenesis that converts protein to the perfect amount of glucose for utilization in these tissues. You're supposed to eat primarily meat, but if you're starving can tolerate fruits and vegetables. Fruits and vegetables don't really prove to be beneficial outside of incredibly weak and biased epidemiology. They also have lots of nasty endogenous pesticides that cause harm to your brain and body (Oxylates, nitrates, etc), and most of the vitamins and minerals touted in them are actually not incredibly bioavailable, think iron, calcium, etc. Meat has what you need, in the most bioavailable form, and it has nothing in it that's going to cause you issues unless you add it yourself.

/r/Health Thread Parent Link - arwick.ac.uk