Ford Earl S, Mokdad Ali H
Division of Adult and Community Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA.
J Nutr. 2003 Sep;133(9):2879-82. doi: 10.1093/jn/133.9.2879.
Despite the role of magnesium in maintaining health, much of the U.S. population has historically not consumed adequate amounts of magnesium. Furthermore, significant racial or ethnic disparities in magnesium intake exist. Our objective was to provide more recent data about magnesium intake in the U.S. population. We analyzed the 24-h dietary recall data from 4257 participants aged >or=20 y from the National Health and Nutrition Examination Survey 1999-2000. The median intake of magnesium was 326 mg/d (mean 352 mg/d) among Caucasian men, 237 mg/d (mean 278 mg/d) among African American men, 297 mg/d (330 mg/d) among Mexican American men, 237 mg/d (mean 256 mg/d) among Caucasian women, 177 mg/d (mean 202 mg/d) among African American women, and 221 mg/d (mean 242 mg/d) among Mexican American women. Among men and women, Caucasians had significantly higher mean intakes of dietary magnesium than African Americans but not Mexican Americans. Magnesium intake decreased with increasing age (P for linear trend = 0.035 for Caucasians; P for linear trend <0.001 for African Americans and Mexican Americans). Men had higher intakes of magnesium than women for each of the three race or ethnic groups (P < 0.001 in each group). Caucasian men, African American men and Caucasian women who used vitamin, mineral or dietary supplements consumed significantly more magnesium in their diets than did those who did not. Substantial numbers of U.S. adults fail to consume adequate magnesium in their diets. Furthermore, racial or ethnic differences in magnesium persist and may contribute to some health disparities.
尽管镁在维持健康方面发挥着作用，但从历史上看，美国大部分人口摄入的镁量一直不足。此外，镁摄入量存在显著的种族或族裔差异。我们的目标是提供有关美国人群镁摄入量的更新数据。我们分析了1999 - 2000年美国国家健康与营养检查调查中4257名年龄≥20岁参与者的24小时饮食回忆数据。白人男性的镁摄入量中位数为326毫克/天（平均352毫克/天），非裔美国男性为237毫克/天（平均278毫克/天），墨西哥裔美国男性为297毫克/天（330毫克/天），白人女性为237毫克/天（平均256毫克/天），非裔美国女性为177毫克/天（平均202毫克/天），墨西哥裔美国女性为221毫克/天（平均242毫克/天）。在男性和女性中，白人的膳食镁平均摄入量显著高于非裔美国人，但高于墨西哥裔美国人。镁摄入量随年龄增长而下降（白人的线性趋势P = 0.035；非裔美国人和墨西哥裔美国人的线性趋势P<0.001）。在这三个种族或族裔群体中，男性的镁摄入量均高于女性（每组P<0.001）。使用维生素、矿物质或膳食补充剂的白人男性、非裔美国男性和白人女性在饮食中摄入的镁比未使用者显著更多。大量美国成年人在饮食中未能摄入足够的镁。此外，镁的种族或族裔差异仍然存在，可能导致一些健康差距。
