The Claim

Higher consumption of low/no-calorie sweetened beverages is associated with a small annual increase in body weight of 0.06 kg/year in adults aged 18–89, as observed across five European cohort studies, independent of caloric intake.

Source: Sugar and low/no-calorie-sweetened beverage consumption and associations with body weight and waist circumference changes in five European cohort studies: the SWEET project

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
60score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

People who drink more low- or no-calorie sweetened beverages gain a small amount of weight each year—about 0.06 kilograms—regardless of how few calories these drinks contain.

See the scientific wording

Higher consumption of low/no-calorie sweetened beverages is associated with a small annual increase in body weight (0.06 kg/year) in adults aged 18–89 across five European cohort studies, despite their negligible caloric content, suggesting a complex relationship not explained by energy intake alone.

Why this might work

When sweet-tasting substances hit the tongue and gut, they trigger signals to the brain that make the body expect sugar. When no sugar arrives, the brain keeps signaling for more food, especially sweet things, leading to eating more calories overall.

Suggested mechanismbased on 1 study

What the research says

1 study
  1. Study: Sugar and low/no-calorie-sweetened beverage consumption and associations with body weight and waist circumference changes in five European cohort studies: the SWEET project

    People who drink more diet sodas tend to gain a tiny bit of weight each year, even though these drinks have no calories — and this study found that same pattern in over 80,000 adults across Europe.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.