The Claim

Higher intake of total artificial sweeteners and aspartame is associated with a 13% to 15% increased risk of obesity-related cancers, including cancers of the breast, colon, liver, and endometrium, based on 2,023 incident cases in the NutriNet-Santé cohort after adjustment for BMI and weight gain.

Source: Artificially Sweetened Beverage Consumption and Cancer Risk: A Comprehensive Dose–Response Meta-Analysis of Prospective Studies

What the research says

Supports is higher

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

Supports
59score
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 consume more artificial sweeteners and aspartame have a 13% to 15% higher incidence of obesity-related cancers, including breast, colon, liver, and endometrial cancers, compared to those with lower intake, after accounting for body mass index and weight gain.

See the scientific wording

Higher intake of total artificial sweeteners and aspartame is associated with a 13% to 15% increased risk of obesity-related cancers, including cancers of the breast, colon, liver, and endometrium, based on 2,023 incident cases in the NutriNet-Santé cohort after adjustment for BMI and weight gain.

Why this might work

Artificial sweeteners change the types of bacteria in the gut, which weakens the gut lining and lets harmful substances enter the bloodstream. This triggers constant low-level inflammation and disrupts how the body processes sugar and fat, creating conditions that cause cells in the breast, colon, liver, and endometrium to grow abnormally and turn into cancer.

Suggested mechanismbased on 1 study

What the research says

1 study

  1. Study: Artificially Sweetened Beverage Consumption and Cancer Risk: A Comprehensive Dose–Response Meta-Analysis of Prospective Studies

    People who drink more diet sodas or eat foods with artificial sweeteners had a slightly higher chance of getting certain cancers like breast or liver cancer, even if they weren’t overweight or gaining weight. This suggests the sweeteners themselves might play a role.

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.