Well, eating real food is what I do. I do not have a sweet tooth, the reverse, I turn down sweet things because I do not like them, I do not snack and never have and I easily eat the recommended 5 8 portions of fruit and veg, mainly veg, a day. Once again, not for any formal diet reasons but because I love vegetables and because for the last 50 years it has successfully managed a minor medical problem.
I think we do not take into account differences in genetic inheritance which affects metabolism and many other bodily operations, when we make glib statements about calories, exercise and 'simples'.
DH had to have regular medicals throughout his working life in order to work offshore. Right from his early 20s, when he was fit, normal weight, non-smoker, light drinker, with a good diet, his blood pressure and blood sugar were always right at the top of the normal range and he frequently had retests. At the same time, when I occasional had these things tested, I was always at the low end of normal. Life and living people are complicated, simples.