Kennedy Eileen T, Luo Hanqi, Houser Robert F
Gerald J and Dorothy R Friedman School of Nutrition Science and Policy, Tufts University, Boston, Massachusetts 02111, USA.
Ecol Food Nutr. 2013;52(1):76-84. doi: 10.1080/03670244.2012.706000.
Data from the 2007-2008 National Health and Nutrition Examination Survey (NHANES) suggested that nearly half of U.S. adults aged 20 to 69 reported taking at least one dietary supplement in the past month. Logistic regression showed that the following factors were independently associated with a greater likelihood of supplement use: being female, older, white, having higher level of education, non-SNAP participation, and living in a food-secure household. To compare nutrient intakes between supplement users and non-supplement users, daily intakes of eight nutrients were examined. When considering nutrients from food, supplement users tended to consume greater amounts of vitamin A, vitamin C, vitamin E, folic acid, calcium, and iron; meanwhile there was no association between supplement use and daily intakes of vitamin B12 and zinc from food sources only. Including nutrients from daily supplement use, supplement users consumed greater amounts of all eight nutrients.
2007 - 2008年美国国家健康与营养检查调查（NHANES）的数据表明，在年龄20至69岁的美国成年人中，近一半的人报告称在过去一个月内至少服用过一种膳食补充剂。逻辑回归分析显示，以下因素与补充剂使用可能性较高独立相关：女性、年龄较大、白人、教育程度较高、未参与补充营养援助计划（SNAP）以及生活在粮食安全的家庭。为比较补充剂使用者和非使用者之间的营养素摄入量，对八种营养素的每日摄入量进行了检查。在考虑来自食物的营养素时，补充剂使用者往往摄入较多的维生素A、维生素C、维生素E、叶酸、钙和铁；同时，仅从食物来源来看，补充剂使用与维生素B12和锌的每日摄入量之间没有关联。将每日补充剂使用中的营养素包括在内后，补充剂使用者摄入的所有八种营养素的量都更多。
