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Fri, May 27, 2022 | 03:42
Briefs
Extreme obesity reduces life more than smoking
고도비만 흡연보다 수명 더 단축시킨다
Posted : 2014-07-11 15:15
Updated : 2014-07-11 15:15
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Extreme obesity cuts life-spans more than smoking, a new study claims.

People who are extremely obese, or weighing 45 kilograms more than what's deemed healthy for a person's height, die 6.5 to 13.7 years earlier than peers with a healthy weight, researchers said in an article published in PLOS Medicine. In comparison, normal-weight smokers lost an average of 8.9 years of life.

The study analyzed data from 20 similar researches of people in the United States, Sweden and Australia, which had been conducted by scientists at the U.S. National Cancer Institute.

The final sample included 9,564 extremely-obese adults and 304,001 healthy-weight adults, making it the largest-ever study of its kind.

Compared with their normal-weight peers, extremely-obese people are more likely to succumb early to heart disease, cancer and diabetes, the researchers said.

It's unclear whether losing weight would extend a person's lifespan, but not becoming obese in the first place surely will, lead investigator Cari Kitahara, a research fellow at the National Cancer Institute, told Philly.com.


고도비만 흡연보다 수명 더 단축시킨다

정상체중보다 45키로그램 이상 나가는 고도비만환자의 수명은 정상체중인 사람보다 6.5년에서 14년까지 짧을 수 있다는 연구결과가 나왔다.

정상체중인 흡연자의 수명은 흡연을 하지 않은 사람보다 8.9년 짧았다. 고도비만이 수면단축에 주는 영향이 흡연보다 큰 셈이다.

미국 국립암연구소(NCI) 연구팀은 미국, 호주, 스웨덴에서 나온 예상집단연구(어떤 질병의 원인으로 의심되는 위험 요인에 노출된 집단과 노출되지 않은 집단을 대상으로 위험 요인 노출과 질병 발생률의 연관성을 보는 연구) 논문 20편의 자료에 기초해 정상 체중을 가진 성인 30만4011명과 9564명의 고도비만인을 비교 분석했다.

이는 몸무게에서 키를 제곱한 수치를 나눈 값인 체질량지수(BMI)를 이용해 집단을 세부적으로 나눠 각 집단을 비교 조사한 것이다. 연구팀은 서양인 기준으로 BMI가 18~25인 경우는 정상 체중, 25~29.9는 과체중, 30~34.9는 1도 비만, 25~39.9는 2도 비만, 40 이상(165㎝/109㎏이상)은 3도 비만으로 구분했다.

그 결과 3도 비만 이상인 고도 비만인은 심장병, 암, 당뇨 등으로 인한 사망 위험이 높아지면서 수명이 줄어들었다. BMI가 40~44.9인 경우는 평균수명이 6.5년, 45~49.9는 8.9년, 50~54.9는 9.8년, 55~59.9는 13.7년 줄어드는 것으로 나타났다. 
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