Oxford University Press named "brain rot" its Word of the Year today, after a public vote of more than 37,000 people. Oxford's definition: the supposed deterioration of a person's mental state from overconsuming trivial content, now particularly online. Use of the term rose 230% in a year. Its first recorded appearance was Thoreau, 1854, wondering why England was busy curing the potato rot while nobody addressed the brain rot. The word is aimed at short-form video. It applies without alteration to the hours a recovering optimizer spends on longevity podcasts at 11 p.m.
What it is and isn't. Oxford's own experts were careful: there is no evidence brain rot is a clinical condition. It is a cultural diagnosis, not a medical one, and we will treat it that way. What is measurable is time, and what time displaces. An hour of content about sleep taken from sleep is not a wash. An evening of podcasts taken from dinner with friends is a trade, whether or not anyone counted it.
Ben’s takeI have funded content platforms. The metric we optimized was time on site, and it was never health outcomes — not once, in any board deck I sat through. Longevity content is an unusually efficient form of brain rot because it feels like the opposite: it is educational, it is "research," it has citations. Rachel, an attorney we write about, keeps a spreadsheet of forty interventions ranked by evidence quality and has not kept an exercise routine for two consecutive weeks in four years. The dopamine of discovery is real. The health benefit of discovering is zero until you close the tab.
Loree’s takeI ask new patients what time they stop looking at health content. "Midnight" is the most common answer, and "I fall asleep with a podcast playing" is second. These are people who came in because they are exhausted. The intervention I write most often is not a supplement. It is a boundary: no health content after eight.
Two things that belong next to this word. Last year the US Surgeon General issued an advisory calling loneliness and isolation an epidemic, and the research behind it associates social disconnection with risks on the order of established risk factors for early death. And the sleep literature associates short sleep — under six hours, under seven — with higher rates of nearly every chronic disease that kills Americans. The phone that keeps you up past midnight learning about longevity is drawing on both accounts at once. Nobody chose that trade. It is simply what the product is for.
Unsubscribe from one longevity podcast this week. Replace it with nothing.