• sweetener
Added sugar
Table sugar and added sugars (sucrose = glucose + fructose). Excess intake is genuinely linked to obesity, type-2 diabetes and dental caries, and its fructose half raises uric acid — but stronger popular claims (that sugar is addictive like a drug, or directly 'feeds' cancer) outrun the evidence.
4 well-supported · 2 disputed. This shows how settled each sub-question is, not whether Added sugar is "good." Direction lives in each claim below.
The 7 claims about Added sugar
Each keeps its own verdict — we never average them away.
added sugar increases diabetes risk
Strong support
added sugar causes dental caries
Strong support
Does eating a lot of added sugar raise heart-and-metabolic disease risk?
Strong support The strongest, best-established piece is sugary drinks: sugar-sweetened-beverage intake reliably raises diabetes and cardiometabolic risk (underpinning the AHA limits Lustig co-authored). For TOTAL added sugar the signal is weaker and more mixed — recent dose-response meta-analyses pin much of the harm on beverages rather than sugar per se — so the broad 'limit all added sugar' framing lands at modest support.
Does eating sugar feed cancer?
Leans support Not the way the myth suggests. Tumours do run on glucose — but so does every cell in your body, and cutting sugar from your plate doesn't starve a tumour; your body keeps blood glucose steady regardless. What the human data does show is a weak association between high sugar intake and some cancers, and it runs mostly through obesity and excess calories rather than sugar feeding tumours directly. The evidence is observational and largely mixed, so this sits barely above the line.
Is sugar addictive in people the way drugs are?
Contested Sugar-bingeing produces addiction-like brain changes in rats, but human evidence that sugar per se meets clinical addiction criteria is weak and contested — what human food addiction exists tracks eating behavior/palatable-food combinations more than sugar as a specific substance.
Is sugar uniquely fattening/diabetogenic beyond its calories?
Leans against Sugar especially in beverages robustly raises weight and diabetes risk, but controlled trials show this is largely a calorie effect — isocaloric swaps do not change body weight — so independent-of-calories is not supported for adiposity, though an added-uric-acid pathway remains a live mechanistic hypothesis.
Do honey, agave and maple sugar spike blood sugar identically to table sugar?
Refuted No — they are all caloric sugars with broadly similar impact, but not identical: honey and high-fructose agave measurably produce a lower acute glucose spike than sucrose/glucose.
Educational only, not medical advice. Hub descriptions are curated for honesty; see the methodology.