PDF(Pubmed)
Abstract：
The percentage of US adults following low-carbohydrate diets (LCD) doubled in the last decade. Some researchers observed this trend with concern and highlighted the potential for nutritional deficiencies and impaired overall diet quality with LCD. The present study investigated nutrient intake in a nationally representative sample of 307 US adults following an LCD. Using cross-sectional data from the National Health and Nutrition Examination Surveys, we compared nutrient intake profiles in said individuals with the daily nutritional goals specified in the current 2020-2025 Dietary Guidelines for Americans (DGA). Results were then compared with the general population consuming a standard American diet. Almost 57 % of low-carbohydrate dieters were female, and the mean age was 48·67 (1·35) years. Individuals consuming LCD exceeded the recommendations for saturated fat, total lipid and sodium intake (both sexes). An insufficient intake was observed for fibre, Mg, potassium and several other vitamins (vitamins A, E, D in both sexes as well as vitamin C in men and folate in women). Neither men nor women met the recommendations for fibre intake. A comparable picture was found for the general population. The potentially insufficient intake of several essential nutrients in LCD warrants consideration and a careful assessment with regard to the current DGA.
摘要：
在过去十年中，使用低碳水化合物饮食（LCD）的美国成年人比例翻了一番。一些研究人员担忧地观察到了这一趋势，并强调了LCD可能导致营养缺乏和整体饮食质量受损。本研究调查了LCD后307名美国成年人的全国代表性样本中的营养摄入量。使用来自国家健康和营养调查的横截面数据，我们将上述个体的营养素摄入量与当前《2020-2025年美国人膳食指南》(DGA)中规定的每日营养目标进行了比较.然后将结果与食用标准美国饮食的普通人群进行比较。几乎57%的低碳水化合物节食者是女性，平均年龄48·67(1·35)岁。消费LCD的个人超过了饱和脂肪的建议，总脂质和钠摄入量（两性）。观察到纤维摄入不足，Mg,钾和其他几种维生素（维生素A，E,两性的D以及男性的维生素C和女性的叶酸）。男性和女性都不符合纤维摄入量的建议。在一般人群中发现了类似的图片。LCD中几种必需营养素的潜在摄入不足，值得考虑并对当前的DGA进行仔细评估。
