Vigorous Exercise helps those with “fat gene.” Physical activity may reduce the risk of obesity in people with a genetic mutation that predisposes them to high body-mass index (BMI), says a U.S. study released Monday. Recent research has shown a link between BMI and variants of the fat mass and obesity associated with the FTO gene, reports HealthDay. The mutations connected with obesity occur are associated with a 3.9-pound increase in body weight, according to background information in the study. While lifestyle factors such as diet and exercise are important factors in weight control, it’s not exactly clear how they interact with genetics. In this study, researchers analyzed DNA samples from 704 healthy Amish adults, average age 43.6, and also conducted a series of physiological tests on the participants, including recording their physical activity over a seven-day period. Those in the “high-activity” group burned about 900 calories (860 for women) more than those in the “low activity” group, the researchers wrote. “High activity” amounted to three to four hours of moderate intensity physical activity such as brisk walking, housecleaning or gardening, the researchers wrote.

Exposure could affect prostate and brain of babies.
Plastic baby bottles cause more concern.  Baby bottles made of a certain plastic are causing “some concern” among government scientists, according to a new report. Human exposure to bisphenol A (BPA), a chemical used in many polycarbonate plastics, such as those used to make some plastic water and baby bottles, is a problem because of the effect it could have on the development of the prostate gland, brain and behavior effects in fetuses, infants and children, according to the final report released Monday by the National Toxicology Program. Scientists with the program have concluded that BPA has the potential to cause harm to human reproduction or development. They base their findings primarily on a review of scientific information on BPA. But the scientists warn that the results are not conclusive. “There remains considerable uncertainty whether the changes seen in the animal studies are directly applicable to humans, and whether they would result in clear adverse health effects,” said NTP Associate Director John Bucher, Ph.D. “But we have concluded that the possibility that BPA may affect human development cannot be dismissed.”

Plastic baby bottles cause more concern.  Baby bottles made of a certain plastic are causing “some concern” among government scientists, according to a new report. Human exposure to bisphenol A (BPA), a chemical used in many polycarbonate plastics, such as those used to make some plastic water and baby bottles, is a problem because of the effect it could have on the development of the prostate gland, brain and behavior effects in fetuses, infants and children, according to the final report released Monday by the National Toxicology Program. Scientists with the program have concluded that BPA has the potential to cause harm to human reproduction or development. They base their findings primarily on a review of scientific information on BPA. But the scientists warn that the results are not conclusive. “There remains considerable uncertainty whether the changes seen in the animal studies are directly applicable to humans, and whether they would result in clear adverse health effects,” said NTP Associate Director John Bucher, Ph.D. “But we have concluded that the possibility that BPA may affect human development cannot be dismissed.”