The Study
Association of decrease in carbohydrate intake with reduction in abdominal fat during 3-month moderate low-carbohydrate diet among non-obese Japanese patients with type 2 diabetes.
This study noticed that when some men ate fewer carbs, their belly fat went down. But it didn’t prove that cutting carbs made the fat disappear — maybe they also moved more or slept better, and that’s what really helped.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
A study looked at people with type 2 diabetes who ate less carbs for 3 months to see if their belly fat went down.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 533 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1For men, cutting carbs seems to specifically target dangerous belly fat even without eating fewer calories — which could matter for diabetes management.
- 2Men lost belly fat and the more carbs they cut, the more belly fat they lost.
- 3Women lost belly fat too, but cutting carbs didn't link to how much fat they lost.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Metabolism: clinical and experimental
Year
2015
Authors
Tae Sasakabe, H. Haimoto, H. Umegaki, K. Wakai
Related Content
Claims (4)
When people eat the same number of calories, a diet low in carbohydrates leads to a larger decrease in visceral fat than a diet high in carbohydrates.
In non-obese Japanese men with type 2 diabetes, following a moderate low-carbohydrate diet for three months is linked to a 10% decrease in visceral fat, and the more carbohydrates are reduced, the more visceral fat is lost, regardless of total calorie intake.
In non-obese Japanese men with type 2 diabetes, following a moderate low-carbohydrate diet for three months led to a measurable reduction in visceral fat, and this reduction was directly linked to lower carbohydrate intake. Subcutaneous fat also decreased, but not in a way that correlated with carbohydrate reduction.
In non-obese Japanese women with type 2 diabetes, following a moderate low-carbohydrate diet for three months led to reductions in both visceral and subcutaneous fat, but the amount of carbohydrate reduced did not predict the amount of fat lost.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.