The Claim
In overweight women with polycystic ovary syndrome, a 12-week energy-restricted diet followed by 4 weeks of weight maintenance resulted in a 7.5% reduction in body weight and a 12.5% reduction in abdominal fat, and these changes were associated with improvements in menstrual cyclicity, lipid profile, and insulin resistance, irrespective of whether the diet contained 30% or 15% protein.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Overweight women with polycystic ovary syndrome who followed a calorie-restricted diet for 12 weeks and maintained their weight for 4 weeks lost 7.5% of their body weight and 12.5% of abdominal fat, and experienced improved menstrual regularity, better lipid levels, and reduced insulin resistance, regardless of whether the diet was high-protein or low-protein.
See the scientific wording
In overweight women with polycystic ovary syndrome, a 12-week energy-restricted diet followed by 4 weeks of weight maintenance led to a 7.5% reduction in body weight and a 12.5% reduction in abdominal fat, which were associated with improvements in menstrual cyclicity, lipid profile, and insulin resistance, regardless of whether the diet was high-protein (30% protein) or low-protein (15% protein).
When a person loses weight, especially around the belly, the fat cells shrink and release fewer fatty acids and inflammatory signals. This lets the body use insulin better, so blood sugar levels drop and the pancreas doesn't have to pump out as much insulin. Lower insulin levels stop the ovaries from making too many male hormones, which allows eggs to develop normally and periods to return. At the same time, the liver starts processing fats more efficiently, lowering bad cholesterol and raising good cholesterol.
What the research says
1 studyWhen overweight women with PCOS lost about 7.5% of their body weight and reduced belly fat, their periods became more regular, their cholesterol improved, and their body handled sugar better — no matter if they ate more or less protein. The weight loss itself was what helped, not the protein amount.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.