The Claim
Over a period of one to two years, low-carbohydrate and balanced-carbohydrate weight-reducing diets result in mean differences of less than 0.5 mmHg in diastolic blood pressure, less than 0.12 mmol/L in LDL cholesterol, and less than 0.14% in HbA1c among overweight and obese adults with and without type 2 diabetes, indicating no consistent difference in cardiovascular or metabolic outcomes between the two dietary approaches.
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.
Over one to two years, low-carbohydrate and balanced-carbohydrate diets lead to nearly identical changes in diastolic blood pressure, LDL cholesterol, and HbA1c levels in overweight and obese adults, with or without type 2 diabetes.
See the scientific wording
Low-carbohydrate and balanced-carbohydrate weight-reducing diets produce little to no difference in changes in diastolic blood pressure, LDL cholesterol, and HbA1c over one to two years in overweight and obese adults with and without type 2 diabetes, with mean differences of less than 0.5 mmHg, 0.12 mmol/L, and 0.14% respectively, indicating neither diet confers a consistent cardiovascular or metabolic advantage.
When people eat fewer calories, their bodies burn stored fat for energy, which lowers blood sugar, cholesterol, and blood pressure regardless of whether the diet is low in carbs or balanced in carbs. The body adjusts how it uses fuel based on how much energy is available, not what type of food is eaten, so both diets end up producing nearly the same changes in these health markers.
What the research says
1 studyStudy: Low‐carbohydrate versus balanced‐carbohydrate diets for reducing weight and cardiovascular risk
Both low-carb and balanced-carb diets led to almost the same tiny changes in blood pressure, cholesterol, and blood sugar over a year or two — so neither is clearly better than the other for these health markers.
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.