Study

Bryan Johnson eats a strict diet of 1977 calories a day and 70 pounds of veggies

Insider Science

PRIMARY 2023
Summary Does eating 1,977 calories and lots of vegetables slow aging? Show / hide ↓

This is a report about one person’s diet, not a controlled research study. He reportedly eats 1,977 calories and about 70 pounds of vegetables over a period of time. There was no comparison group and no reliable measurement showing that the diet slowed aging or extended life. The report also does not show whether this eating pattern is safe or suitable for other people.

What this means for you: You can ignore this as proof that the diet improves longevity. A balanced diet with enough nutrients matters, but copying an extremely strict plan is not supported by this report.

weak evidence
DesignPRIMARY
TierTier 4, Ingredient RCT (different dose)
Year2023
JournalInsider (via syndication)
Added to NO1GEVITYJul 4, 2026

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