Research
Macro partitioning
Low carbohydrate diets are not significantly superior to low fat diets for weight loss when protein content is held constant.
You do not need to choose between low-carb and low-fat based on efficacy; both work equally well if you stick to them. Focus on adherence and protein intake rather than eliminating entire food groups, as no single diet is superior.
StrongRefutesHIGH confidence
Most careful comparisons find that low carbohydrate diets are not significantly better than low fat diets for weight loss... Table 1 shows that low carbohydrate diets do not produce significantly more weight loss than low fat diets.
Why this rating
Supported by multiple meta-analyses and large RCTs (DIOGENES, POUNDS Lost) cited in the text.
Source
Evidence‐based weight loss interventions: Individualized treatment options to maximize patient outcomes
George A. Bray et al. · Diabetes Obesity and Metabolism · 2020
DOI 10.1111/dom.14200
narrative_reviewCited 133×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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Related findings · Macro partitioning
- Total daily protein intake of 1.6 g/kg/day is sufficient for maximizing resistance training-induced muscle gains, with an upper confidence interval of 2.2 g/kg/day.Strong
- Resistance exercise training combined with sufficient dietary protein intake acts synergistically to maximize skeletal muscle hypertrophy, with protein intake saturating around 1.6 g/kg/day for general populations and potentially requiring 2.0-2.2 g/kg/day for resistance-trained individuals.Strong
- Trans fats should be completely eliminated from the diet, as they increase LDL cholesterol, decrease HDL cholesterol, and are directly associated with increased coronary risk.Strong
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