Research
Adherence
Dietary counseling interventions produce a modest net weight loss of approximately 2 BMI units (6%) at 12 months compared to usual care, but this benefit diminishes significantly over time as participants regain weight during the maintenance phase.
Dietary counseling helps you lose about 6% of your body weight in the first year, but you will likely regain much of it if you stop the active support. To keep the weight off, you need ongoing maintenance strategies, as the initial benefits fade over time.
GoodQualifiesMEDIUM confidence
Compared with usual care, dietary counseling interventions produce modest weight losses that diminish over time. ... The largest number of studies reported data at 6 and 12 months... total net weight loss during an active intervention is, on average, progressively greater for about 6 months, with eventual regain after 12 months.
Why this rating
Meta-analysis of 46 randomized controlled trials, though limited by heterogeneity and moderate-to-poor study quality.
Source
Meta-analysis: The Effect of Dietary Counseling for Weight Loss
Michael L. Dansinger et al. · Annals of Internal Medicine · 2007
DOI 10.7326/0003-4819-147-1-200707030-00007
Meta-analysis · 46 studiesCited 468×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Among dietary counseling interventions, those that combine diet and exercise result in statistically significantly greater weight loss during the active phase (first year) compared to diet alone, although this difference is not statistically significant during the maintenance phase.Good
- Patients with type 2 diabetes lose approximately half the weight achieved by non-diabetic patients through dietary counseling, and studies excluding diabetic patients report greater net weight loss.Good
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