Milk: does it affect blood pressure? A controlled intervention study.
In a double-blind trial, the effect on blood pressure of supplementation of normal milk (1180 mg Ca2+, 1650 mg K+ and 110 mg Mg2+ d-1) vs. 'mineral-poor' milk (95 mg Ca2+, 580 mg K+ and 10 mg Mg2+ d-1) was studied. Young healthy normotensive female students consumed one of the two supplements while on a low calcium diet (less than 500 mg Ca2+ d-1) for a period of 6 weeks. In both the normal milk- and 'mineral-poor' milk-supplemented groups systolic blood pressure decreased slightly. However, this decrease was persistently greater in the milk-supplemented group. The individual mean systolic blood pressure change during normal milk treatment (-4.1%) was significantly greater (P = 0.03) than that during 'mineral-poor' milk treatment (-1.3%). An effect of normal milk supplementation on diastolic blood pressure could not be demonstrated. The results of the present study indicate a small hypotensive effect of milk consumption, which is attributable to its content of essential minerals.
Van Beresteijn
E C
EC
Department of Nutrition, The Netherlands Institute for Dairy Research (NIZO), Ede.
van Schaik
M
M
Schaafsma
G
G
D000328:Adult; D000818:Animals; D001794:Blood Pressure; D002118:Calcium / Q000378:metabolism; D002136:Calcium, Dietary / Q000008:administration & dosage*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008274:Magnesium / Q000378:metabolism; D008892:Milk; D010758:Phosphorus / Q000378:metabolism; D011188:Potassium / Q000378:metabolism; D012964:Sodium / Q000378:metabolism
D002136:Calcium, Dietary; D010758:Phosphorus; D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium