中国证据:T2DM患者BMI与死亡率呈U型相关

2016-12-05 赛诺菲医学部 菲糖新动微信号

导语:2016年10月,Journal of Diabetes and its Complications发表一项前瞻性队列研究,通过收集分析开滦研究的数据,探究中国2型糖尿病(T2DM)患者体重指数(BMI)对全因死亡率的影响。肥胖是糖尿病的危险因素之一,体重增长会增加发生糖尿病的可能性,然而,对于超重或肥胖的终末期肾病(ESRD)、高血压、心衰患者,死亡风险反而降低,这就是著名的“肥胖悖论”。

导语:2016年10月,Journal of Diabetes and its Complications发表一项前瞻性队列研究,通过收集分析开滦研究的数据,探究中国2型糖尿病(T2DM)患者体重指数(BMI)对全因死亡率的影响。

肥胖是糖尿病的危险因素之一,体重增长会增加发生糖尿病的可能性,然而,对于超重或肥胖的终末期肾病(ESRD)、高血压心衰患者,死亡风险反而降低,这就是著名的“肥胖悖论”。近期国外研究显示,T2DM患者中也存在“肥胖悖论”,那么在中国T2DM患者的情况如何?
2006-2007年,开滦集团在河北省11家医院为其在职及退休职工进行了健康体检,在2008-2009年、2010-2011年、2012-2013年又进行了3次。其中11,449例2006-2007年或2008-2009年首次参加体检并诊断为T2DM的患者被纳入此研究,平均年龄56.60±10.65岁,根据BMI分成四组:偏轻组(BMI<18.5kg/m2)、正常组(BMI 18.5-24kg/m2)、超重组(BMI 24-28kg/m2)、肥胖组(BMI≥28kg/m2)。

肥胖组患者的全因死亡率最低

平均随访7.25±1.42年期间,共1,254例患者死亡。偏轻组、正常组、超重组和肥胖组患者的全因死亡率分别为25.0%、13.4%、10.3%和9.4%,肥胖组全因死亡率最低(P<0.001)。对数秩分析显示,不同BMI分组的患者累积全因死亡率存在显著差异(P<0.001)。

不同BMI分组患者的累积全因死亡率


校正其他危险因素后,偏轻组患者的全因死亡风险最高

校正其他危险因素*后,以正常组作为参照,偏轻组、超重组和肥胖组的全因死亡风险比(HR)分别为1.497、0.833和0.809。根据年龄三分位数分层后,这种趋势依然存在。
*校正因素包括:年龄、性别、空腹血糖、吸烟状态、收缩压、高血压史、卒中史、癌症史、心肌梗死史。

不同BMI分组患者的全因死亡风险

此外,三次函数分析显示,BMI与全因死亡率之间呈U型相关。

BMI与全因死亡率的相关性

综上,中国北方T2DM患者中,与体重正常或偏轻的患者相比,超重和肥胖患者的全因死亡率更低,“肥胖悖论”确实存在。

作者见解

此前多项研究也证实,T2DM患者存在“肥胖悖论”,但是肥胖对健康的危害不容忽视,肥胖是高血压、糖尿病、心肌梗死和其他疾病的危险因素。减重可以作为心血管和脑血管事件的初级预防措施,然而当患者出现特定并发症时,就不应过分强调减重。Look AHEAD研究显示,超重和肥胖的T2DM患者通过生活方式干预减重和降低HbA1c,并不会带来心血管事件和死亡风险的降低,因此需要一个更实用的BMI切点,以降低心血管和脑血管事件、癌症及其他疾病的患病率,同时减低全因死亡风险较低。

原始出处:

Hui Liu, Shouling Wu, Yun Li, et al. J Diabetes Complications 2016 Oct 17

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    2016-12-11 1e10c84am36(暂无匿称)

    凡事要适度

    0

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    2016-12-06 MyQueen

    凡事适度最好

    0

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    2016-12-06 susice

    体重指数需重视

    0

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    2016-12-05 Anima

    2型糖尿病患者

    0

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