[ACC] Does Calorie Restriction Slow Aging?

A 2019 Adversarial Collaboration Contest entry by Adrian Liberman (CR-skeptic, biology PhD/ex-NIA) and Calvin Reese (CR-believer) on whether calorie restriction extends lifespan. Carefully defines terms (ad-lib vs normative diet; adCR vs ndCR). Animal evidence: CR robustly extends lifespan in yeast (3x), worms, flies, rodents (10-30%), tapering as animals get larger/brainier (dogs 25%); monkeys contradict (Wisconsin adCR positive vs NIA ndCR null) -- the adCR/ndCR confound is the analytic crux. Mechanism: the eight Hallmarks of Aging (obesity implicated in all eight) and the CR-ROS / Rate-of-Living 'mutation budget' theory. Human evidence: the BMI-25 mortality-minimum paradox, Okinawa/Japan and wartime-rationing epidemiology (confounded by FOXO3A genetics), and the acute risks from the Minnesota Starvation Experiment (sterility, immune/wound impairment, the 'Minnesota Boner Downer,' eating disorders). Converges on: evidence weakly supports CR modestly extending human life (20-30% CR -> maybe 10-20%), but the risks and misery aren't worth it -- eat a normative diet (and pour soup into grandma if she's over 75).

Quality 75 · Excellent. A strong, comprehensive, genuinely balanced ACC -- two authors with opposite priors converge on a nuanced conclusion, backed by ~78 citations and an engaging voice, with a real clarifying contribution (the adCR-vs-ndCR distinction resolving the monkey-study contradiction). Excellent-low: above the dry Spiritual-Experiences ACC (73), below the standout Eating-Meat ACC (78); a literature synthesis rather than original research.

Claude’s paradigm shift 52 · Moderate. A literature review whose science and the Hallmarks-of-Aging framework are others'; the terminology framework and the adCR/ndCR-confound resolution are the genuinely novel synthetic bits. Moderate.

Real-world impact 2 · Minor. A contest entry / within-discourse review; no material-world effect. Within-blog/community influence.

Humor 2/5 · Man of One Study. A serious science review (adversarial collaboration) carried in a relentlessly funny voice (the Al-Qaeda-franchise oxygen, the phylactery grandma, the 'Minnesota Boner Downer') -- genuinely, notably funny, but the humor is secondary to the science, so 2, not the primarily-comedic 3.