Cutting calories a bit for two years might slow how fast your body ages on a cellular level, according to a study on healthy adults who aren’t overweight.

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Evidence from Studies

Supporting (1)

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Effect of long-term caloric restriction on DNA methylation measures of biological aging in healthy adults from the CALERIE trial

Randomized Controlled Trial

Human

2023 Mar

The study tested cutting calories by 25% for two years and found it slowed a key measure of biological aging, just like the claim says.

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Effect of long-term caloric restriction on DNA methylation measures of biological aging in healthy adults from the CALERIE trial

Score: 59

DOI: 10.1038/s43587-022-00357-y

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If healthy-weight adults eat 25% less food for two years, it might slow down how fast their body ages—based on a special aging test—though not all aging tests showed a change.

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