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Man Eats 1000 Sardines, Loses 6 Pounds, Smells Like Fish
2 Dec, 2025
Summary
- Researcher ate 1,000 sardines in 30 days for health experiment.
- He lost six pounds and achieved high omega-3 levels.
- The main drawback was developing a strong fish-like body odor.

A health researcher based in Boston undertook a unique 30-day experiment in October, consuming approximately 1,000 sardines. Nick Norwitz aimed to discover if an extreme sardine-only diet could replicate the benefits of fasting, such as fat loss and longevity, without compromising muscle mass. He found the fish to be a nutrient-rich food, akin to a 'metabolic Swiss Army knife'.
Throughout the trial, Norwitz reported increased energy, preserved muscle, and significant fat loss, shedding six pounds. His omega-3 levels became exceptionally high, described as 'dolphin-like'. He also experienced ketosis and a boost in metabolism-regulating hormones, leading to sharper focus.
However, the experiment came with a notable social cost: a strong, fish-like body odor that persisted despite rigorous hygiene practices. This olfactory side effect significantly reduced his 'kiss frequency' with his girlfriend. Norwitz suggests the diet could be an option for metabolic resets but advises caution due to unstudied high omega-3 levels.