Postmenopausal volunteers aid copper nutrition study
In Grand Forks North Dakota 11 postmenopausal women volunteer for Study No 134 at the U S Department of Agriculture Human Nutrition Research Center to assess copper deficiency effects on cardiovascular health. Volunteers live on site for 105 days copper free then 35 days with copper and 35 days reintroduction while undergoing medical tests. The center emphasizes comfort and control with strict dietary measurement and frequent monitoring.