Adherence
Referral to largely unsupported online weight loss programmes (NHS Weight Loss Plan, Rosemary Online, Slimming World Online) yields modest, statistically significant weight loss compared to no intervention only for Rosemary Online, while other programmes show no significant difference, indicating that digital interventions without substantial personal support are marginally superior to no intervention.
If you are considering an online weight loss program, look for one that offers some level of personal support or coaching, even if minimal. This study found that Rosemary Online, which included a proactive contact from a coach, resulted in significant weight loss compared to no intervention, whereas programs with no support (NHS Weight Loss Plan) or only chat support (Slimming World) did not show significant mean weight loss differences. Simply having access to a digital tool is not enough; engagement and support are key.
Only one of three online weight loss programmes was superior to no intervention and the effect size modest among participants living with obesity.
Why this rating
Randomized controlled trial with a large sample size (n=528) and rigorous allocation concealment, though limited by self-reported outcomes and short duration (8 weeks).
Source
Testing the short‐term effectiveness of primary care referral to online weight loss programmes: A randomised controlled trial
Michaela Noreik et al. · Clinical Obesity · 2021
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