Study challenges 10,000 steps myth

The Independent reported on August 5 that the 10,000-steps-a-day target, one of the most widely repeated fitness benchmarks, did not originate in scientific research but in a 1960s Japanese pedometer marketing campaign. The article said newer research points to a lower and less rigid threshold for health gains, with benefits appearing well below 10,000 steps a day. Several peer-reviewed studies cited in recent coverage support that broader point, though they measure associations rather than proving cause and effect. ### Where did the 10,000-step target actually come from? Harvard Health reported that the number traces to 1965, when a Japanese company marketed a device called the Manpo-kei, or “10,000 steps meter.” Harvard cited researcher I-Min Lee as saying the name was a marketing tool rather than a figure established by medical evidence. The Independent’s August 5 article made the same point, saying the benchmark did not come from a laboratory or a formal scientific standard. (independent.co.uk) The number endured because it was simple, memorable and easy to turn into a daily goal. Over time, that made it look like an official threshold even though the original source was commercial branding, not a clinical guideline, according to Harvard Health and The Independent. ### What do newer studies say people gain before 10,000 steps? A 2021 study in JAMA Network Open found that adults taking at least 7,000 steps a day had a 50% to 70% lower risk of death during the study period than those taking fewer steps, according to the National Heart, Lung, and Blood Institute summary of the research. (health.harvard.edu) That study also said step intensity did not change mortality risk in the analysis. A 2024 analysis published in JAMA said 7,000 steps a day was associated with lower risk across several outcomes, including all-cause mortality, dementia, cardiovascular disease, depressive symptoms and type 2 diabetes, while “more modest” totals of about 4,000 steps were also linked with better health. The same report said benefits continued above 7,000 for some conditions but leveled off for several outcomes. (nhlbi.nih.gov) ### Why does dementia research keep coming up in this debate? A 2022 JAMA Neurology study of nearly 78,000 adults in the U.K. found that dementia risk declined as daily steps increased up to about 9,800 steps a day. The study said about 3,800 steps a day was associated with a 25% lower incidence of dementia, while around 9,800 steps was associated with about a 50% lower incidence. (jamanetwork.com) Harvard Health, summarizing that paper, said participants were followed for seven years after wearing activity trackers, and it described the findings as a link between higher step counts and lower dementia risk. That distinction matters because observational studies can show association without establishing that walking alone caused the difference. (jamanetwork.com) ### So is 10,000 steps still useful, or just arbitrary? The Independent said 10,000 steps can still be a useful goal and can improve health, but it is not the minimum threshold for benefits. Its article said people can gain from walking less than that, which aligns with the more recent studies showing measurable associations at roughly 4,000 to 7,000 steps and, for dementia research, from about 3,800 upward. (health.harvard.edu) The evidence base now cited across The Independent, JAMA, JAMA Neurology and Harvard Health points to a simpler message: consistent walking appears to matter more than hitting one exact number every day. Readers looking for the underlying studies can find the dementia paper in JAMA Neurology from September 2022 and the broader step-count analysis in JAMA from 2024. (independent.co.uk)