Perhaps there's a reason why alcohol tolerance and the ability to process seeds occurs together.

the biggest problem is that sugar is quite toxic to cells when it's above some certain threshold... above that point, all kinds of systems kick in to fix the problem, insulin rises, enzymes appear to string it into amylose, which at least isn't penetrating cell membranes like glucose can, and still other enzymes are converting it to fats, most notably being done in the liver

individuals whose genetics do not have the fat synthesis tendency are ending up with alzheimers, cancer, motor neuron disease, attention deficit disorder, diabetes, and numerous other diseases, probably rheumatoid arthritis is caused by this, cramping disorders (cannabis helps these and no coincidence it also increases insulin response)

so, if you eat normal food, and you don't get fat, something else is hiding in the background that is going to kill you slowly as you get older

look at it this way

do a survey of animals that eat seeds, and sugars, and honey, and see how long their lifespans are, i mean mammals and avians

hummingbirds live almost exclusively on sugar... this is required for the incredible power ratio of their wing muscles

they live very short lives and when they sleep it's like a coma

there's many examples you can find but animals that live off starch and sugars do not live long lives, and for that matter cellulose neither

there was some bogus studies done in the 60s to promote the idea that plant based diets were better because bla bla bla short life - these were bullshit that was warming everyone up towards the modern industrial food propaganda system, and developing the cult of veganism