Workplace wellness programmes barely dent men's waistlines

Smoking, poor nutrition, inactivity, alcohol and excess weight are modifiable behaviours that feed the growing global burden of chronic disease. The workplace has been highlighted as a promising place to deliver programmes targeting them, since it can reach people who might never seek out a health service on their own. Employers increasingly invest in such schemes on the assumption that they change behaviour and, ultimately, health. This review pulled together the randomised trial evidence on workplace programmes aimed specifically at men to test whether that assumption holds up.

The review was registered in advance on PROSPERO and searched five electronic databases for randomised controlled trials run in workplaces between January 2010 and August 2021 that targeted smoking, nutrition, alcohol, physical activity or overweight and obesity in men. Eleven studies made the cut. Eight reported on overweight and obesity, seven on physical activity, four on nutrition, three on alcohol and three on smoking, with eight studies assessing multiple outcomes. Findings were combined through narrative synthesis, and where possible through meta-analysis of changes in body weight and body mass index over two horizons: up to 3 months and beyond 3 months.

The overall picture was mixed. Some individual studies reported improvements in snacking frequency, sugar-sweetened beverage consumption and physical activity, measured through METs and VO2 max. When weight results were pooled, body weight fell by an average of 0.28 kg up to 3 months and 1.38 kg beyond 3 months, while body mass index fell by 0.06 kg/m2 up to 3 months and 0.27 kg/m2 beyond. The direction was encouraging, but none of these pooled changes reached statistical significance. On the review's own numbers, the programmes nudged habits more convincingly than they shifted weight.

The findings sit awkwardly between promise and proof. They support the idea that workplaces can reach men with health programmes and produce measurable behaviour change, but they stop well short of showing meaningful effects on weight. The authors point to short study durations as the key gap and call for long-term designs to test whether workplace programmes can genuinely address chronic disease risk over time. Until those studies exist, the effectiveness of workplace wellness for men remains an open question rather than an established fact.

If your employer runs a wellness programme, this evidence is a reason to see it as a useful nudge rather than a plan that will change your weight on its own. The behaviour shifts recorded here, less snacking and fewer sugary drinks among them, are worth having in their own right. The weight changes, though, were small and not statistically significant even when pooled across trials. Anyone counting on a workplace scheme to do the heavy lifting on body weight is likely to be disappointed by what these trials found.