I think it was Dr. Steven Gundry who said this, the concept that the fructose in fruit during summer months is there to help the plant spread its seed babies with a bit of fertilizer and help you fatten to survive the long hard winter. The bears in Montana eat massive quantities of huckleberries during summer to put on the fat for winter's hibernation, for instance. Fruit, yes bred now to have much more sugar, year around? Gundry recommends eating fruits only in their particular natural season of availability for that reason even if the fruit has been made to be available in the stores the entire year. And also recommends avoiding if you have metabolic issues.