Word: schroeders
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...Schroeder constructed one high on a 1,600-ft. Vermont hill near his home base at Dartmouth Medical School...
Kidney Analyses. Among the 20 elements that Dr. Schroeder investigated as potential artificial pollutants, cadmium produced the most striking results. Rats given minute traces of cadmium salts in drinking water all their lives developed high blood pressure of a type remarkably similar to the human disease. More females than males developed the disease, but it was deadlier to the males; the animals developed fatty plaques in their aortas, and showed enlargement of the heart. When rats receiving cadmium were divided into two groups, 80% of those on soft water developed high blood pressure as against only 17% of those...
...next question was obvious: Do humans react like rats when they ingest cadmium and other metals? By way of answer, Dr. Schroeder offered chemical analyses of 400 human kidneys showing that Americans at birth have a negligible amount of cadmium stored there, that the amount of the metal increases gradually with age and reaches its highest levels in patients with high blood pressure of unknown origin. He did not have to remind his medical audience that kidney function is important in regulating blood pressure, and that many cases of high blood pressure are clearly associated with kidney disorders...
Civilized man, said Dr. Schroeder, ingests an excess of cadmium from tea and coffee, refined flour and polished rice, some phosphate-fertilized crops- and water pipes. Soft water, he declared, takes up cadmium, a contaminant in copper and galvanized pipes, far more readily than does hard water...
Chromium Decline. Another of the 20 elements studied was chromium. All over the world, people are born with relatively generous amounts of chromium in their vital organs, but in the U.S. the levels decline precipitously around age ten. By juggling his rats' intake of chromium, Dr. Schroeder found that a severe shortage, such as afflicts many adult Americans, caused many of the rats to develop first diabetes and then artery disease-a condition remarkably like progressive human diabetes. With animals kept at what Dr. Schroeder considers a normal chromium level, there was virtually no diabetes or atherosclerosis. "Specialists...