Most people who lose weight put it back on. Long-term obesity research keeps showing the same pattern. Roughly half the weight lost in a diet programme returns within two years, and most of the rest by year five. The reasons are biological and behavioural, and they hit hardest after the diet ends. A new meta-analysis from the European Congress on Obesity 2026 points to a simple, evidence-based target for the maintenance phase, and the number is lower than the famous 10,000.
The weight regain problem
Weight regain is the standard outcome, not the exception. In long-term lifestyle trials, participants lose around 5 to 8 kg in the first year, then drift back toward baseline once active coaching stops. National Weight Control Registry data from successful long-term maintainers shows one consistent habit. They walk a lot. Around 90 percent of registry members report close to an hour of exercise a day, and walking is the most common form.
The open question for years has been a numbers question. How many steps a day does someone need to hold a 5 to 10 percent weight loss in place. The 10,000-step target on every fitness tracker has no clinical origin. It came from a 1960s Japanese pedometer marketing campaign. Recent research has steadily lowered the bar.
What the new 2026 meta-analysis found
A research team led by Professor Marwan El Ghoch at the University of Modena and Reggio Emilia pooled 14 randomised controlled trials covering 3,758 adults with overweight or obesity. Mean age was 53 years. Mean BMI was 31 kg/m2. Trials came from the UK, US, Australia and Japan. Results were presented at the European Congress on Obesity in Istanbul on 12 to 15 May 2026 and published in the International Journal of Environmental Research and Public Health.
Two findings stood out. First, daily step count was not strongly linked to how much weight people lost during the active diet phase. Second, it was strongly linked to how much weight people kept off during the maintenance phase after it.
Participants in the lifestyle modification arm raised their step count from a baseline of about 7,486 to a mean of 8,454 by the end of the weight loss phase. Over a maintenance phase averaging around 10 months, they held on to 3.3 percent of their starting body weight. Each extra 1,000 daily steps in maintenance was associated with another 1.1 to 1.3 percent of weight kept off.
Source: El Ghoch et al., International Journal of Environmental Research and Public Health, 2026. Presented at ECO 2026.
Why 8,500 beats 10,000 as a target
10,000 steps is a round number, not a clinical recommendation. The recent step count literature backs a target in the 7,000 to 9,000 range for general health, with the marginal benefit curve flattening past the upper end. The 2026 analysis pinpoints 8,500 for one specific outcome, keeping weight off after a diet. For an adult who has lost 5 to 10 percent of body weight, the number sets a clear, measurable lever.
The 1.1 to 1.3 percent maintenance bonus for every extra 1,000 steps is not trivial. For a 90 kg adult who has lost weight and wants to hold it, an extra 2,000 steps a day (about 20 minutes of brisk walking) is linked to keeping an extra 2 kg off.
Steps and weight kept off
Modelled illustration based on the +1.1 to 1.3 percent per 1,000-step relationship reported by El Ghoch et al. 2026.
Why walking holds weight off
Walking is the form of movement most adults will do for life. It carries low injury risk, no kit cost, and fits around work, school runs and commutes. Three mechanisms link daily walking to keeping weight off. The first is energy balance. An extra 2,000 to 3,000 steps a day for a 90 kg adult burns roughly 100 to 150 kcal. Over 12 months the gap matters for a body biologically driven to regain weight after a diet.
The second is behavioural anchoring. Step counts give a daily target easy to track and hard to fool. Pedometer-based interventions in the wider literature produce small but consistent weight changes (around 1 to 1.3 kg). The third is knock-on health. Walking lowers blood pressure, improves insulin sensitivity and protects against cardiovascular events. The UK Chief Medical Officers and the WHO both recommend at least 150 minutes of moderate aerobic activity a week, and 8,500 daily steps for most adults clears the threshold without a structured workout block.
How to hit 8,500 steps in a London routine
The number sounds large from a desk. It is small in practice once stacked across the day. Walk to and from the tube or bus stop rather than driving. A 10-minute walk each way adds around 2,000 steps. Get off one stop early for another 1,500. A 15-minute walk at lunch adds 1,800. A 30-minute evening walk closes the gap and clears stress. A standing desk does not count. Steps need walking. Treadmill desks, walking meetings and parking further from the supermarket all do count.
Frequently asked questions
Practical takeaways
Set 8,500 steps as your daily maintenance target after a weight loss phase. Track for two weeks to see your baseline, then add 1,000 to 2,000 steps a day until you hit the number consistently. Build the steps into commute and lunch blocks rather than relying on one big evening walk. Pair walking with two to three short resistance training sessions a week to protect muscle mass.
Work with a London PT on a step and strength plan for your week
If you have lost weight and want a clear, evidence-based plan to keep it off, book a free consultation at www.dushyantatomar.com. Personal training and nutrition coaching in London and online.
Sources
- El Ghoch et al. Walking 8,500 steps per day to maintain weight loss in adults with obesity. Presented at ECO 2026, Istanbul. Healio coverage with study details.
- Catenacci VA et al. Physical Activity Patterns Using Accelerometry in the National Weight Control Registry. Obesity, 2014. PMC4560526.
- Ding D et al. Daily steps and health outcomes: dose-response meta-analysis. Lancet Public Health, 2025. PMID 40713949.
- Richardson CR et al. Meta-analysis of pedometer-based walking interventions. Ann Fam Med, 2008. PMID 18195317.
- NHS UK Physical activity guidelines for adults aged 19 to 64.