The Claim

Genetically predicted waist-to-hip ratio increases coronary artery disease risk by 54%, with approximately 66% of this effect mediated by metabolic risk factors shared with BMI, including diabetes and hypertension.

Source: Risk factors mediating the effect of body-mass index and waist-to-hip ratio on cardiovascular outcomes: Mendelian randomization analysis

What the research says

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Supports
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Challenges
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These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

People with a genetically higher waist-to-hip ratio have a 54% higher risk of coronary artery disease, and about two-thirds of this increased risk is due to metabolic conditions like diabetes and high blood pressure.

See the scientific wording

Genetically predicted waist-to-hip ratio (WHR) increases coronary artery disease risk by 54%, and approximately 66% of this effect is mediated by the same metabolic risk factors as BMI, suggesting that abdominal fat distribution contributes to heart disease primarily through diabetes and hypertension.

Why this might work

Excess fat stored around the waist releases fatty acids and inflammatory signals that interfere with insulin action in muscle and liver, causing high blood sugar. This forces the pancreas to produce more insulin, which raises blood pressure and damages blood vessels. The resulting high blood sugar and high blood pressure directly harm the arteries supplying the heart, leading to blockages.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Risk factors mediating the effect of body-mass index and waist-to-hip ratio on cardiovascular outcomes: Mendelian randomization analysis

    People who are genetically more likely to store fat around their waist have a higher risk of heart disease, and most of that risk comes from high blood pressure and diabetes — not just from being overweight overall. The study confirms this exactly.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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