Research
Adherence
Lifestyle interventions with high intensity (>28 sessions/year) and sustained duration achieve clinically meaningful weight loss (>5%), whereas lower intensity interventions yield modest, less sustained results.
To lose more than 5% of your body weight and keep it off, you need a high-touch lifestyle program with at least 28 sessions (more than twice a month) in the first year. Standard, low-frequency advice is unlikely to produce clinically significant results.
GoodQualifiesHIGH confidence
Clinically meaningful >5% weight loss... was achieved with >28 interventions over 1 year but not for shorter interventions.
Why this rating
High-quality evidence from a meta-analysis of 31 RCTs with >20,000 participants, though heterogeneity in intervention types exists.
Source
Intensity and duration of lifestyle interventions for long-term weight loss and association with mortality: a meta-analysis of randomised trials
Navneet Singh et al. · BMJ Open · 2019
Meta-analysis · 31 studiesCited 90×
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