Word: endocrinologist
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While most of these reports involve heavy doses of chemicals, evidence from laboratory studies suggests there are also effects at lower concentrations. Endocrinologist David Crews has discovered, for example, that small PCB doses can dramatically influence the ratio of male to female offspring in red-eared slider turtles. When University of Wisconsin toxicologist Richard Peterson investigated the impact of dioxin on male rats, he found that the dose needed to cause reproductive-system problems was relatively high. "But when we exposed pregnant rats to a dose 1/100th as large," he says, "we found the male offspring showed signs of reproductive...
Elders, a pediatric endocrinologist, became Surgeon General after serving as director of the Arkansas Department of Health. In a February interview, Elders told The Crimson that her top three priorities in her new office will be early childhood education, primary preventative health care and eliminating unwanted teen pregnancies...
Elders, a pediatric endocrinologist who is currently finishing her term as director of the Arkansas Department of Health, received her medical degree from the University of Arkansas...
...breakthrough in a procedure doctors have been dreaming about for some time: the freezing and storage of unfertilized eggs. Sperm and embryos are regularly frozen for later use, but not eggs, which quickly lose their viability when manipulated outside the body. But Dr. Kwang Yul Cha, an endocrinologist at Cha Women's Hospital in Seoul, reports that his team has produced two pregnancies from eggs matured not in an ovary but in a Petri dish -- a major step in the eventual perfection of egg freezing. Many scientists expect that the procedure will be available within the next few years...
...only in the past five years that researchers have found a link between estrogen levels and fat in the diet. Women who eat lots of hamburgers, thick shakes and other fatty foods have higher overall levels of estrogen and especially large amounts of the "biologically active" form. Equally significant, endocrinologist David Rose of the Naylor Dana Institute in Valhalla, N.Y., has found that when women switch to a very low-fat diet (20% of total calories), their estrogen levels quickly drop by 20%. Advocates of the dietary-fat theory regard this observation as a crucial bit of supporting evidence. Given...