The Sardine Diet Gave Me A Superpower
In this personal science video, the creator recounts a month‑long experiment in which he ate roughly 1,000 sardines, noting an unexpected side effect: he no longer felt cold during New England winter blizzards. To explain the phenomenon, he consulted scientific literature and experts, discovering that the massive intake of omega‑3 fatty acids can be metabolized into the hormone 12‑HEPE. This hormone activates brown‑fat thermogenesis, increasing energy expenditure and heat production, which accounts for his cold‑resistance. Intriguingly, the receptor for 12‑HEPE is an olfactory (smell) receptor that is expressed in multiple tissues—including liver, brain, and brown fat—linking the characteristic sardine odor to the metabolic pathway. The video ends by questioning whether the metabolic “superpower” is worth the trade‑off of constantly smelling like fish.
