4月24日，美国最新一项研究成果显示，进食含糖量过高的食品会使血液中的甘油三酯升高，从而增加患心血管疾病的风险。
美国埃默里大学的研究人员在4月刊《美国医学学会杂志》上报告说，他们是在对6113名美国成年人的医疗数据进行分析后得出上述结论的。这些被调查对象参加了1999年至2006年美国举行的一次全国性健康和营养调查。
研究结果显示，每日摄取的糖分与血液中高密度胆固醇的水平有密切关系。如果被调查对象每天摄取的热量中至少25％来自含糖量高的食品，那么他们血液中高密度胆固醇水平偏低的风险要增加3倍多。高密度胆固醇具有防止动脉粥样硬化等对人体有利的作用。
研究人员指出，即便考虑了吸烟、饮酒和体力活动等因素，糖分摄取量的多少仍然会影响甘油三酯水平。
美国心脏协会建议，在成年人每天所需的热量中，糖分提供的热量应占5％左右。
推荐原文出处：
JAMA. 2010;303(15):1490-1497.
Caloric Sweetener Consumption and Dyslipidemia Among US Adults
Context Dietary carbohydrates have been associated with dyslipidemia, a lipid profile known to increase cardiovascular disease risk. Added sugars (caloric sweeteners used as ingredients in processed or prepared foods) are an increasing and potentially modifiable component in the US diet. No known studies have examined the association between the consumption of added sugars and lipid measures.
Context Dietary carbohydrates have been associated with dyslipidemia, a lipid profile known to increase cardiovascular disease risk. Added sugars (caloric sweeteners used as ingredients in processed or prepared foods) are an increasing and potentially modifiable component in the US diet. No known studies have examined the association between the consumption of added sugars and lipid measures.
Design, Setting, and Participants Cross-sectional study among US adults (n = 6113) from the National Health and Nutrition Examination Survey (NHANES) 1999-2006. Respondents were grouped by intake of added sugars using limits specified in dietary recommendations (& 5% [reference group], 5%-&10%, 10%-&17.5%, 17.5%-&25%, and 25% of total calories). Linear regression was used to estimate adjusted mean lipid levels. Logistic regression was used to determine adjusted odds ratios of dyslipidemia. Interactions between added sugars and sex were evaluated.
Main Outcome Measures Adjusted mean high-density lipoprotein cholesterol (HDL-C), geometric mean triglycerides, and mean low-density lipoprotein cholesterol (LDL-C) levels and adjusted odds ratios of dyslipidemia, including low HDL-C levels (&40 mg/dL for men; &50 mg/dL for women), high triglyceride levels (150 mg/dL), high LDL-C levels (130 mg/dL), or high ratio of triglycerides to HDL-C (<3.8). Results were weighted to be representative of the US population.
Main Outcome Measures Adjusted mean high-density lipoprotein cholesterol (HDL-C), geometric mean triglycerides, and mean low-density lipoprotein cholesterol (LDL-C) levels and adjusted odds ratios of dyslipidemia, including low HDL-C levels (&40 mg/dL for men; &50 mg/dL for women), high triglyceride levels (150 mg/dL), high LDL-C levels (130 mg/dL), or high ratio of triglycerides to HDL-C (<3.8). Results were weighted to be representative of the US population.
Conclusion In this study, there was a statistically
