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想要新陈代谢健康 多来点乳制品吧!

  1. 乳制品
  2. 新陈代谢

来源:生物谷 2014-09-19 09:08

新的研究表明,乳制品也可能对代谢健康产生有益的作用,并能降低代谢性疾病如肥胖症和2型糖尿病的风险。

2014年9月17日讯 /生物谷BIOON/--乳制品被认为是健康饮食的一部分,膳食指南推荐每天食用2-4份的牛奶为基础的产品,如牛奶,酸奶,奶酪,奶油和黄油。

乳制品含有钙和矿物质,这些物质对骨骼健康是有益的,但是新的研究表明,乳制品也可能对代谢健康产生有益的作用,并能降低代谢性疾病如肥胖症和2型糖尿病的风险。

CHU de Québec Research Center和Laval大学研究人员探究法裔加拿大人乳制品的饮食习惯,监控乳制品消耗如何可能对他们的整体代谢健康产生影响。他们的研究结果发表在Applied Physiology, Nutrition, and Metabolism杂志上。

本研究的目的是确定在健康人群中,牛奶摄入量和特定代谢危险因素,包括人体营养状况,血浆葡萄糖,血浆脂质分布,炎症标志物和血压之间的关联。

本研究共招募254参加者,233人(105男,128女)符合研究所有的标准资格,即这些符合要求的受试者有健康的代谢特征。研究表明,虽然研究参与者个体平均每天消费2.5±1.4份奶制品,然而在这项研究中,近45%的人没有达到加拿大食品指南建议,即每天至少2份乳制品。

数据表明,在血浆中发现的反式棕榈油酸可以潜在地用作评价奶制品消耗的生物标志物。反式棕榈油酸,天然存在于牛奶,奶酪,酸奶,奶油,肉类脂肪,但不能被人体合成出。此脂肪酸最近已经显示出具有促进健康的效果。在本研究中,反式棕榈油酸水平与降低男性和女性的血压,降低男性体重相关。

在此研究中,虽然牛奶摄入与低血糖和高血压之间没有因果关系[可能是由于横断设计。编者注:横断设计(cross-sectional design): 研究者在同一时刻观测、比较处于不同生理年龄阶段的被试者,对于和年龄有关的行为差异得出结论]。但牛奶摄入与低血糖和高血压之间确实有关。研究科学家Iwona Rudkowska博士说:还需要更多的精心设计研究,以确定增加乳制品消耗在健康和代谢恶化的人群中对代谢健康的影响。。(生物谷Bioon.com)

本文系生物谷原创编译整理,欢迎转载!转载请注明来源并附原文链接。谢谢!

Associations between dairy intake and metabolic risk parameters in a healthy French-Canadian population

Marine S. Da Silv, et al.

Observational studies support that dairy product intake is associated with a reduced risk of developing type 2 diabetes; however, several clinical studies report conflicting results on the association between dairy product consumption and metabolic parameters. The aim of this study was to determine associations between dairy product consumption and metabolic profile. Dietary data, using a validated food frequency questionnaire, and fasting blood samples were collected from 233 French Canadians. Plasma phospholipid (PL) fatty acids (FA) concentrations were determined by gas chromatography. Subjects consumed 2.5 ± 1.4 portions of dairy products daily, including 1.6 ± 1.3 portions of low-fat (LF) and 0.90 ± 0.70 portions of high-fat (HF) dairy products. Trans-palmitoleic acid level in plasma PL was related to HF dairy consumption (r = 0.15; p = 0.04). Total (r = –0.21; p = 0.001) and LF dairy (r = –0.20; p = 0.003) intakes were inversely correlated with fasting plasma glucose level. Total dairy intake was inversely associated to systolic blood pressure (r = –0.17; p = 0.008) and diastolic blood pressure (r = –0.14; p = 0.03). LF dairy intake was also inversely correlated with systolic blood pressure (r = –0.17; p = 0.009). Total dairy intake was correlated with plasma C-reactive protein (CRP) (r = 0.15; p = 0.03). No association was found between HF dairy consumption and the risk factors studied. In conclusion, dairy intake is inversely associated with glycaemia and blood pressure; yet, it may modify CRP levels. Moreover, trans-palmitoleic FA levels in plasma PL may be potentially used to assess full-fat dairy consumption.

 

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