Waist size flags heart disease risk better than BMI in large study
A JACC study of more than 260,000 adults over about 20 years found waist circumference and waist-to-hip ratio reclassify heart risk beyond body mass index. People with a normal BMI but high central fat faced up to 50 percent higher risk on several outcomes.
WASHINGTON - Fat around the midsection predicts future heart disease better than body mass index alone, according to a large study published in JACC, the flagship journal of the American College of Cardiology.
Researchers in the Cross Cohort Collaboration followed more than 260,000 people for an average of about 20 years. Participants had waist circumference or waist-to-hip ratio data and were tracked for nine outcomes, including heart attack, stroke, heart failure, atrial fibrillation, and death from heart disease or any cause.
BMI is weight in kilograms divided by height in meters squared. It is widely used to label overweight or obesity, but it does not show where fat sits. Visceral fat around the organs is more strongly tied to heart disease and diabetes than fat just under the skin.
Among people with a normal BMI, about 5 percent had a high waist circumference and 18 percent had a high waist-to-hip ratio. Among those overweight, about 39 percent had high waist circumference and 40 percent had high waist-to-hip ratio. People with normal weight or overweight who still had high central fat measures faced 15 percent to 50 percent greater risk for most of the nine outcomes studied.
Senior author Dr. Michael J. Blaha of the Johns Hopkins Ciccarone Center for the Prevention of Cardiovascular Disease said waist and waist-to-hip measures reclassify risk that BMI alone can miss. Lead author Zeina A. Dardari said relying only on BMI can misclassify cardiovascular risk across a wide range of outcomes.
JACC editor-in-chief Dr. Harlan M. Krumholz said the study, based on hundreds of thousands of participants, shows that where fat is distributed matters and that simple waist measures should be part of routine risk assessment.
The study did not include detailed physical activity, diet, or genetic obesity risk, and it used a single waist measurement rather than changes over time. Authors still urged clinicians to consider central fat across the full BMI spectrum in primary prevention.
Go Deeper
What did the study measure?
Waist circumference and waist-to-hip ratio on top of BMI, then later heart attack, stroke, heart failure, atrial fibrillation, and related deaths over roughly two decades.
How big was the risk gap?
People with normal weight or overweight BMI who still had high central fat had about 15 percent to 50 percent higher risk for most outcomes studied.
Why is belly fat different?
臓器周囲の内臓脂肪は、皮膚の下にある皮下脂肪よりも慢性疾患と強く関係しています。 BMI ではこれらを区別できません。 |||9月||| BMIの使用をやめるべきでしょうか? |||9月||| 著者とJACC編集者は、BMIだけでは十分ではないと述べています。彼らは、医師のアドバイスなしにBMIを無視するのではなく、ウエストの寸法を追加することを推奨しています。 |||9月||| 今週は何ができますか? |||9月||| 自宅でウエストを測るか、医師に尋ねてください。腰や身長に比べて中央部が大きい場合は、血圧、コレステロール、活動性、体重分布について話し合ってください。 |||9月||| より健康に |||9月||| 英国の大規模調査で成人の6人に1人近くが頻繁に孤独を感じていると報告 |||9月||| インペリアル・カレッジ・ロンドンの研究者は、135,000人以上の成人を調査し、ほぼ6人に1人が頻繁または常に孤独を感じていることを発見しました。約 44% が次のように答えました。 |||9月||| 8月17日 |||9月||| フロリダ州とルイジアナ州でビブリオによる死者が増加、当局が海水浴客に警告 |||9月||| 保健報告書によると、フロリダ州では今シーズンビブリオ関連の死亡が2名、ルイジアナ州では5名が確認されている。この細菌は暖かい沿岸水に生息しており、 |||9月||| 研究によると、階段の上り下りは心臓病による死亡リスクの低下に関連していることが判明 |||9月||| 48万人以上の参加者を対象とした最近の分析では、階段の上り下りと心臓病による死亡リスクの低下との間に関連性があることが判明した。研究では、 |||9月||| 8月16日 |||9月||| 50 Plus Hub は、50 歳以降のスマートな生活のための日刊新聞スタイルのポータルです。役立つガイダンス、ゲーム、ツール、セール、わかりやすい英語のヘルプが含まれています。 |||9月||| 10年までに |||9月||| 50代 |||9月||| 60代
Should I stop using BMI?
The authors and JACC editors say BMI alone is not enough. They recommend adding waist measures, not throwing BMI away without medical advice.
What can I do this week?
Measure your waist at home or ask your clinician. Discuss blood pressure, cholesterol, activity, and weight distribution if your midsection is large relative to your hips or height.
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