Word: epidemiologists
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...into a more serious problem, join the club. About 18% of American children aged 6 to 19 are now overweight, and childhood obesity rates are rising around the world. But what does early overweight mean for youngsters in adulthood: will overweight kids necessarily become overweight - and unhealthy - grown-ups? Epidemiologist David Freedman from the Centers for Disease Control and Prevention's division of Nutrition, Physical Activity and Obesity studies that question. Though the science has been less than conclusive about the precise health risk factors obese children will face in the future, Freedman's research shows at least one clear...
...habits of current and former smokers, with and without cancer, with a carefully matched control group of never-smokers. While the variants were associated with an increased risk of lung cancer in smokers, that genetic predisposition is not destiny. In the U.S.-based study, led by Christopher Amos, an epidemiologist at the M.D. Anderson Cancer Center in Houston, people who never smoked but still had the genetic variants showed no increased risk of lung cancer, which suggests that nicotine might be necessary to trigger the tumor-building process - and that smokers with this particular genetic profile are only at greater...
...Most of that increased risk was due to the greater danger of breast and other cancers among these women. "We had all hoped to see the breast cancer risk diminish rapidly [after hormone therapy was stopped]," says Dr. Gerardo Heiss, the lead author of the JAMA study and an epidemiologist at the University of North Carolina's School of Public Health. "But that was not the case with women...
Susan Goodykoontz, 42, epidemiologist, Arizona department of public health, Phoenix...
...with a shorter life span. Sleep is the body's opportunity to rest and repair what the day has wrought, and if your heart is working at its 3 p.m. rate when the clock hits 3 a.m., it's simply going to wear out faster. In the new study, epidemiologist Jane Ferrie questioned 7,700 British civil servants about their sleep habits over an eight-year period and found that those who slept six to eight hours nightly at the beginning of the study but decreased the amount of rest they got by the end of it increased their risk...