Diet books either treat sugar as poison or downplay it entirely. The reality is dose-dependent and food-context-dependent. WHO recommendations (under 25g/day added sugar for women) are well-supported by evidence; the 'no sugar at all' approach has no benefit over moderation.
Where excess sugar genuinely matters
Cardiovascular risk increases above 25g/day added sugar. Insulin resistance and metabolic markers worsen. Dental caries. Liver fat accumulation. Most UK adults consume 60-90g daily — mostly from drinks and processed food, not desserts.
Where the moral panic overstates
Whole fruit sugar isn't a problem for most people. Sugar addiction as pharmacology is overstated. 'Natural' vs 'refined' sugar is mostly meaningless once digested. Quitting sugar entirely produces no benefit over moderate intake within limits.
Aim for under 25g/day added sugar. Drink water more than sweetened drinks. Eat whole fruit liberally. Have dessert when you want it. The boring middle path beats both extremes.