My grandfather was getting obese and had a risk of getting diabetes. I always assumed he ate healthy food, since he always made an effort for it. When his med

My grandfather was getting obese and had a risk of getting diabetes. I always assumed he ate healthy food, since he always made an effort for it. When his medic reviewed all his food choices... the issue was actually fruit, in particular various kind of oranges, my grandpa just loves oranges and will eat them often, several per day.