Research
Energy balance
Long-term lifestyle interventions significantly improve weight loss compared to control groups, with effects ranging from -0.5 to -11.5 kg at 2 years or longer.
Sustained weight loss is achievable with long-term lifestyle changes. Interventions that include a clear caloric deficit, behavior therapy, and potentially meal replacements are most effective for maintaining weight loss over 2+ years.
GoodSupportsHIGH confidence
Eleven of 39 comparisons produced significant improvement in weight between groups at 2 years or longer with mean difference weight change ranging from -0.5 to -11.5 kg.
Why this rating
Meta-analysis of 39 comparisons from RCTs.
Source
Systematic review of long‐term lifestyle interventions to prevent weight gain and morbidity in adults
Tamara Brown et al. · Obesity Reviews · 2009
DOI 10.1111/j.1467-789x.2009.00641.x
Meta-analysis · 40 studiesCited 181×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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- Long-term lifestyle interventions combining diet, exercise, and behavior therapy significantly reduce the risk of developing type 2 diabetes and metabolic syndrome in adults with impaired glucose tolerance or obesity compared to control groups.Good
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