The Claim

Diet beverage consumption is associated with 10–15% higher volumes of visceral, intermuscular, and subcutaneous adipose tissue and an increased risk of obesity.

Source: Long-term aspartame and saccharin intakes are related to greater volumes of visceral, intermuscular, and subcutaneous adipose tissue: the CARDIA study

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 diet beverages have higher amounts of fat around internal organs, between muscles, and under the skin, and are more likely to be obese.

See the scientific wording

Diet beverage consumption is associated with 10–15% higher volumes of visceral, intermuscular, and subcutaneous adipose tissue and increased risk of obesity, suggesting these beverages may be a primary source of artificial sweeteners driving adiposity outcomes.

Why this might work

When artificial sweeteners like aspartame are consumed, they break down in the gut and reduce the activity of an enzyme that normally neutralizes bacterial toxins. This allows toxins to leak into the bloodstream, triggering chronic low-level inflammation that causes fat cells to grow larger and multiply, increasing fat deposits around organs, muscles, and under the skin.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Long-term aspartame and saccharin intakes are related to greater volumes of visceral, intermuscular, and subcutaneous adipose tissue: the CARDIA study

    People who drank diet sodas over many years ended up with more fat around their organs and muscles, and were more likely to become obese—even when researchers accounted for how much they ate or how healthy their diet was. This suggests diet sodas might contribute to weight gain in ways we don’t fully understand yet.

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.