Infact
91 / 100
True

Fat is converted to carbon dioxide and exhaled, with 84% of lost fat leaving the body this way.

Infact verdict: True (91/100).

The claims regarding fat loss through exhalation are supported by scientific evidence. The first claim that fat is converted to carbon dioxide and exhaled is corroborated by multiple reliable sources, including a study published in the British Medical Journal and coverage by BBC News. The second claim, stating that 84% of lost fat is exhaled, is supported by articles from Medical Xpress and The Independent, which cite scientific research. Both claims are factual and supported by high-quality evidence.

September 13, 2026 Language: en 2 claims analyzed
How is this score determined? →

Individual claims

94
True Health
The fat is burned into carbon dioxide, which then leaves the body through the lungs.
Multiple high-quality sources, including a study published in the British Medical Journal and BBC News, confirm that fat is metabolized into carbon dioxide and exhaled through the lungs. This is a well-established scientific fact.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 90
Web Consensus Weight 40
Source Quality Score 90
Source Quality Weight 20
Llm Reasoning Score 90
Llm Reasoning Weight 40
Llm Reasoning Score Raw 90
Weighted Total 94
Evidence Summary 3 web sources confirm fat is exhaled as CO2.
88
True Health
We exhale 84% of the fat we lose.
The claim that 84% of lost fat is exhaled as carbon dioxide is supported by articles from Medical Xpress and The Independent, which cite scientific research. This statistic is widely reported and accepted in scientific discussions about fat metabolism.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 80
Web Consensus Weight 40
Source Quality Score 80
Source Quality Weight 20
Llm Reasoning Score 80
Llm Reasoning Weight 40
Llm Reasoning Score Raw 80
Weighted Total 88
Evidence Summary 2 web sources confirm 84% of fat is exhaled.

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