Wang Jui-Line, Weng Yao-Lin, Pan Wen-Harn, Kao Mei-Ding
Dept of Food and Nutrition, Providence University, 200 Chung-Chi Rd, Salu Dist. Taichung city 43301, Taiwan.
Asia Pac J Clin Nutr. 2011;20(2):266-74.
Data from nationwide population-based nutrition surveys in Taiwan were used to investigate trends and nutritional status for magnesium from 1993 to 2008. Dietary magnesium intake was estimated from 24-hour dietary recalls. Serum and urinary magnesium were also measured. In Nutrition and Health Survey in Taiwan (NAHSIT) 2005-2008, average magnesium intake was 305 mg and 259 mg for adult males and females, respectively, which is equivalent to 82-85% of relevant Taiwanese Dietary Reference Intakes (DRIs). After correcting intra-individual variation, 74-81% of adult subjects' dietary magnesium was estimated as sub-optimal. Mean serum magnesium concentration was 0.866 mmol/L and 0.861 mmol/L for the males and females, respectively. The prevalence of low serum magnesium (<0.8 mmol/L) was 12.3% and 23.7% for the males and females, respectively. There was positive association among dietary magnesium, blood magnesium, and urinary magnesium/creatinine ratio. From NAHSIT 1993-1996 to NAHSIT 2005-2008, dietary magnesium significantly increased (p<0.05), the blood magnesium and urinary magnesium/creatinine ratio decreased (p<0.05). The findings suggest that the relationships between dietary magnesium and biochemical markers among different nutrition and health surveys are not straightforward and need to be further clarified.
来自台湾全国性人群营养调查的数据被用于研究1993年至2008年镁的摄入趋势和营养状况。膳食镁摄入量通过24小时膳食回顾来估算。同时也测量了血清和尿液中的镁含量。在2005 - 2008年台湾营养与健康调查（NAHSIT）中，成年男性和女性的平均镁摄入量分别为305毫克和259毫克，这相当于台湾相关膳食参考摄入量（DRIs）的82 - 85%。在校正个体内部差异后，估计74 - 81%的成年受试者膳食镁摄入不足。男性和女性的平均血清镁浓度分别为0.866毫摩尔/升和0.861毫摩尔/升。血清镁水平低（<0.8毫摩尔/升）的患病率男性为12.3%，女性为23.7%。膳食镁、血镁和尿镁/肌酐比值之间存在正相关。从1993 - 1996年的NAHSIT到2005 - 2008年的NAHSIT，膳食镁显著增加（p<0.05），血镁和尿镁/肌酐比值下降（p<0.05）。研究结果表明，在不同的营养与健康调查中，膳食镁与生化指标之间的关系并非简单直接，需要进一步阐明。
