> But humans haven't had fresh fruit available all year round until recently.

Certain groups like Europeans haven't, but humans have lived in lots of places that have year-round fresh fruit for quite a long time.

not to mention most fruits have been selectively bred/genetically engineered to have much higher sugar content than they did when we evolved to eat them seasonally

Indeed. And Food Unwrapped (UK TV programme) explained how the supermarkets don't need to say how much sugar is in those ultra-sweet Piccolo tomatoes because they vary and it's impractical to measure. In fact, it's worse than that because mostly they do display the sugar content in the Nutrition Information but it was found to always be a huge underestimate (like 3x lower than the real value).

Still, they're much nicer than the old tomatoes. At least I'll die happy. There are too many humans in the world anyhow.

>Yeah. But humans haven't had fresh fruit available all year round until recently.

Which humans? There are many tropical regions where fruit is available year round.

Good point. Does anyone know if there have been any studies on only eating in-season fruits and vegetables and how the body reacts?

The original solution was simply preservation. Drying, canning, pickling, etc.