期刊
EUROPEAN JOURNAL OF CLINICAL NUTRITION
卷 59, 期 2, 页码 219-225出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.ejcn.1602062
关键词
magnesium; pregnancy; vegetarian diet; dietary fibre
Objective: To compare dietary magnesium intake and magnesium concentrations in serum, red blood cells (RBC) and urine during pregnancy of women habitually following a long-term plant-based diet and of women following an average Western (control) diet. Design: Prospective study during pregnancy. Setting: Giessen, Germany. Subjects: Healthy pregnant women (n = 108) in their 9-12th, 20-22nd and 36-38th gestational week habitually following a plant-based diet for more than 3 y or an average Western diet. The vegetarians were subdivided into ovo-lacto vegetarians (n = 27) and low-meat eaters (n = 43). Results: Significant higher dietary magnesium intakes were observed in pregnant women consuming a plant-based diet (508 +/- 14 mg/day for ovo-lacto vegetarians, P < 0.001 and 504 ±11 mg/day for low-meat eaters, P < 0.001) than in pregnant women consuming a control diet (412 +/- 9 mg/day). Serum magnesium concentrations were similar in all diet groups whereas RBC magnesium was slightly higher in low-meat eaters than in controls (P = 0.058). Urinary magnesium excretion was higher in ovo-lacto vegetarians (P = 0.023), followed by low-meat eaters (P = 0.017) when compared to the control group. During the third trimester of pregnancy, the frequency and the occurrence of calf cramps was lower in the plant-based diet group than in the control group (P = 0.004 and 0.008). Conclusions: Owing to a higher dietary magnesium intake confirmed by higher urinary magnesium excretion, habitual plant-based diets result in a slightly improved magnesium status during pregnancy and reduce the frequency of calf cramps during the third trimester of pregnancy compared to an average Western diet. Therefore, plant-based diets during pregnancy can be recommended with regard to magnesium supply.
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