Research
Macro partitioning
Reducing dietary protein intake (specifically BCAAs) improves insulin sensitivity in obese mice, whereas increasing BCAA intake exacerbates insulin resistance.
For obese individuals, reducing the intake of branched-chain amino acids (found in high-protein foods like meat, eggs, and dairy) may improve insulin sensitivity. Conversely, high BCAA intake can worsen insulin resistance. This suggests that the quality of protein (BCAA content) is as important as the quantity.
GoodSupportsHIGH confidence
Similar outcomes were achieved by reducing protein (and thus BCAA) intake, whereas increasing BCAA intake did the opposite; this corroborates the pathogenic roles of BCAAs and BCKAs in IR in ob/ob mice.
Why this rating
Consistent results across multiple dietary manipulation experiments in obese mouse models.
Source
Targeting BCAA Catabolism to Treat Obesity-Associated Insulin Resistance
Meiyi Zhou et al. · Diabetes · 2019
DOI 10.2337/db18-0927
mechanism_onlyCited 311×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Pharmacological inhibition of BCKDK using BT2 reduces plasma branched-chain amino acid (BCAA) and branched-chain alpha-keto acid (BCKA) levels, thereby attenuating obesity-associated insulin resistance in obese mice.Good
- Elevated levels of branched-chain alpha-keto acids (BCKAs) impair insulin signaling by activating mTORC1, independent of BCAAs.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
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →