Research
Macro partitioning
High-protein diets, particularly those with a high Glycemic Index, can increase LDL cholesterol levels, negating cardiovascular benefits despite potential fat loss.
Be cautious with high-protein diets that also rely on high-GI carbohydrates (like white rice/pasta with meat). This combination may raise your LDL cholesterol. Opt for high-protein diets paired with low-GI carbohydrates to avoid this risk.
GoodRefutesHIGH confidence
Mean ± SE low-density-lipoprotein cholesterol levels declined significantly in the diet 2 group... but increased in the diet 3 group
Why this rating
RCT with clear biochemical markers.
Source
Comparison of 4 Diets of Varying Glycemic Load on Weight Loss and Cardiovascular Risk Reduction in Overweight and Obese Young Adults
Joanna McMillan-Price et al. · Archives of Internal Medicine · 2006
DOI 10.1001/archinte.166.14.1466
rct · n=129Cited 331×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- A high-carbohydrate, low-glycemic index (GI) diet optimizes both body fat loss and cardiovascular risk reduction (specifically LDL cholesterol) compared to high-protein or high-GI diets in overweight young adults.Good
- Lowering the Glycemic Index (GI) of a high-carbohydrate diet doubles fat loss in women compared to a high-GI high-carbohydrate diet, without compromising lean mass.Good
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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