Even if you're not a diabetic, blood glucose spikes affect your mental performance like a weak stimulant, creating mild mood swings. Also, high amounts of high GI foods stimulate body fat production.
> Also, high amounts of high GI foods stimulate body fat production.
That idea, 'the insulin hypothesis', has not been proven. In fact there is now evidence that claim is false. (Paywalled study [1], summary in this article [2]).
