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Eur J Clin Nutr. 1992 Sep; 46(9): 661-9.

The effects of a 2-year switch from a mixed to a lactovegetarian diet on trace element status in hypertensive subjects.

Srikumar TS, Kšllg√ɬ•rd B, Ockerman PA, Akesson B.

Department of Applied Nutrition and Food Chemistry, University of Lund, Sweden.

Trace element status of 20 hypertensive subjects (14 women and 6 men, mean age 52 years) was compared to that of normotensives. The changes in trace element status, body weight and blood pressure after a 2-year switch from a mixed to a lactovegetarian diet were also compared between these groups. The concentration of copper in plasma and that of lead in hair were higher in hypertensive subjects than in normotensives, but the concentrations of zinc, magnesium and selenium in plasma, urine and hair were similar to those of normotensives. In the hypertensive subjects, 3 months after the diet shift there was a decrease in the concentrations of zinc in plasma, hair and urine, that of copper in plasma and hair, of magnesium in urine, of selenium in plasma and hair, and an increase in the magnesium content in plasma and hair. Also the concentrations of mercury, lead and cadmium in hair decreased after the diet switch. Among the hypertensives, the relative increase of magnesium in plasma was greater than that of normotensives; their relative decreases of selenium and lead in hair were lower, that of cadmium greater and that of copper in urine was lower. Four years after the start of the experiment when most subjects had resumed a mixed diet, mineral and trace element concentrations in plasma, hair and urine were similar to their baseline levels. Three months after the diet switch the relative decrease in body weight was more marked among hypertensive women (5%) than in female normotensives (3%), but similar among men of both groups (5%).(ABSTRACT TRUNCATED AT 250 WORDS)

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