身體質量指數 (BMI) 長久以來都是醫生們用來評斷一個人的體重健康與否的標準,但是,最新的研究指出,這個指數其實超級不準的!
![The formula for BMI is weight in kilograms divided by height in meters squared. Because height is commonly measured in centimeters, divide height in centimeters by 100 to obtain height inches](http://teepr.com/wp-content/uploads/2015/07/2A4FE12200000578-0-image-a-86_1436308535385.jpg)
美國研究機構做了一項實驗,找了6位身高同樣175公分,體重也一樣是78公斤的志願者。他們的身體質量指數同樣都是25.4,但這些人的體型卻非常不同。
![These illustrations were created from scans of real people by New York City based startup Body Labs. The number labeled V is the amount of fluid that would fill a container the same size as their body, in litres](http://teepr.com/wp-content/uploads/2015/07/2A4FE13A00000578-0-image-a-83_1436308424196.jpg)
根據官方數據指出,身體質量指數超過25算是過重,而超過30則會被認為是肥胖。
![insulinFat](http://www.teepr.com/wp-content/uploads/2015/04/insulinFat.png)
根據研究指出,會造成這樣的結果是因為肌肉與骨頭比脂肪的密度高,而且每個人的體重分部都不同。但是,身體質量指數只參考身高與體重,並沒有考慮這些因素。
![A heatmap comparison of person 2 to person 1. The heatmap coloring represents the point-to-point distances between the same points on both of their bodies. Blue means their bodies were the same, and hot pink means they differed greatly. You can see their bodies varied most in their stomachs, backs and back of legs](http://teepr.com/wp-content/uploads/2015/07/2A4FE13200000578-0-image-a-84_1436308508875.jpg)
圖中可以看到體重的分部其實很不均勻。
因為身體質量指數對於體型或身體的結實程度都不考慮,所以一位職業運動選手的身體質量指數可能會或與一些根本不運動的人被歸在同一個過重或肥胖的族群裡。
![2843CE2500000578-3066540-Father_of_one_Romario_Dos_Santos_Alves_25_risked_his_life_by_inj-a-52_1430694336480](http://www.teepr.com/wp-content/uploads/2015/05/2843CE2500000578-3066540-Father_of_one_Romario_Dos_Santos_Alves_25_risked_his_life_by_inj-a-52_1430694336480.jpg)
許多營養師現在開始強調,體脂肪比率跟身體組成比起體重更能精確的判斷一個人是否健康。而且,研究也指出,其實用一條繩子比用磅秤更能準確地測量你的健康指數!
![little-fat-kid](http://www.teepr.com/wp-content/uploads/2014/11/little-fat-kid.jpg)
英國大學的科學家表示,拿一條跟你身高一樣長的繩子,摺一半後看看能不能將它圍繞住你的腰部。如果繩子可以完全圍住你的腰部或還有剩,那恭喜你,你得到心臟疾病的機率是比較小的。如果無法的話,那你可能要開始為健康努力囉!
![surprised-shocked-animals-funny-6__700](http://www.teepr.com/wp-content/uploads/2015/05/surprised-shocked-animals-funny-6__700.jpg)
來源:Dailymail
看完之後只想歡呼然後立刻把磅秤丟掉!趕快把這個健康新知分享給朋友吧!
(往下還有更多精彩文章!)