El Ghoch pins 8,500‑step target

Walking is back in the obesity conversation — not as a vague “move more” slogan, but as a specific number people can actually aim for. Research tied to the European Congress on Obesity in Istanbul says the sweet spot for weight-loss maintenance may be about 8,500 steps a day. That matters because losing weight is only half the fight. Keeping it off is where most people get dragged back. ### Why is this getting attention now? The new piece of news is a review led by Marwan El Ghoch at the University of Modena and Reggio Emilia, presented ahead of ECO 2026 and also published in the *International Journal of Environmental Research and Public Health*. The team pulled together randomized trials that tracked both dieting and step counts, then asked a very practical question: after people lose weight, how much walking seems to help them not regain it? (eurekalert.org) ### What did the researchers actually analyze? They started with 18 randomized controlled trials and used 14 of them in the meta-analysis, covering 3,758 adults with overweight or obesity. Average age was 53, average BMI was 31, and the participants came from countries including the U.S., U.K., Australia, and Japan. In the pooled comparison, 1,987 people were in lifestyle-modification programs and 1,771 were in control groups that either dieted without the same walking component or got no treatment. (eurekalert.org) ### Where does the 8,500 number come from? At baseline, both groups were pretty similar — a little over 7,200 steps a day. During the weight-loss phase, the lifestyle group moved up to 8,454 steps a day on average and lost 4.39% of body weight, roughly 4 kilograms. During the maintenance phase, that group stayed high at 8,241 steps a day. That is why the researchers are rounding to a practical target of about 8,500, not treating 10,000 as some magic line. (eurekalert.org) ### Does this mean steps caused the weight maintenance? Not cleanly. The catch is that this is a meta-analysis of trials with different program designs, and the walking happened inside broader lifestyle packages that also included diet advice. So the safest read is not “8,500 steps alone keeps weight off.” It is more like: in programs where people maintained higher step counts around that level, they also did better at avoiding regain. (eurekalert.org) That is useful, but it is not the same as proving a single-number cause. ### Why not just say 10,000? Because 10,000 was never a hard biological threshold. It stuck because it is simple and memorable. This research is interesting for the opposite reason — it gives clinicians and patients a maintenance target that comes from pooled trial data rather than folklore. Basically, it lowers the psychological bar without turning the advice into “anything goes.” (eurekalert.org) ### Why is maintenance so much harder than loss? Because the body hates giving up stored energy. After weight loss, appetite can rise, energy expenditure can fall, and old habits creep back in. El Ghoch’s team points to a brutal stat: around 80% of people with overweight or obesity who lose weight regain some or all of it within three to five years. A target people can monitor on a phone or watch is appealing because it turns a fuzzy instruction into a daily behavior. (eurekalert.org) ### So what should a reader do with this? Treat 8,500 as a useful benchmark, not a verdict. If you are maintaining weight loss, the message is simple: keep activity up after the diet phase ends, because that is when people usually relax and rebound. The bottom line is that this research does not kill the 10,000-step idea — but it does suggest the more important number may be the one you can sustain for months after the scale first moves. (eurekalert.org)