Trying to eat healthier, (edit for me this means lower sugar, less carbs, more protein) and it seems like everything that is sweet, sweet-ish, or a snack but also sold as healthy has peanuts or is peanuts. I’m not allergic to it, but I am tired of peanut butter cookies, peanuts in a snack bar, peanuts on their own, peanuts in a snack mix.
Whole, modern, domesticated fruits do contain quite a bit of sugar, but that sugar is locked up in fiber. There are lots of anti-sugar crusaders that consider whole fruit to be a “gimme.” Gary Taubes (Good Calories, Bad Calories) and Robert Lustig (Sugar: the Bitter Truth) are two that leap to mind.
I’m just going by my sense of my body’s reaction. Eating an apple seems to have the same effect on me as eating a candy bar. My aversion to needles stops me from constantly testing my blood sugar levels to actually know.