For obese, vaccine needle size matters
Our ever-expanding waistlines may have outgrown the doctor’s needle, researchers say, in what could be another casualty of the obesity epidemic.
In a new study, the researchers report that using a standard 1-inch needle to immunize obese adolescents against hepatitis B virus produced a much weaker effect than using a longer needle.
“As obesity rises in the US, we need to be aware that the standard of care may have to change to protect obese youth,” study co-author Dr. Amy Middleman of Baylor College of Medicine in Houston told Reuters Health.
Men who eat soy may have lower lung cancer risk
Men who don’t smoke and eat a lot of soy may have a lower risk of lung cancer, according to a new study.
Soy contains isoflavones, which act similarly to the hormone estrogen, and may have anti-cancer qualities in hormone-related cancers of the breast and prostate, the researchers note in the American Journal of Clinical Nutrition. Cells in the lung have properties that suggest they may also respond to isoflavones.
Dr. Taichi Shimazu, of the National Cancer Center in Tokyo, and colleagues studied more than 36,000 Japanese men and more than 40,000 Japanese women, 45 to 74 years old and free of cancer at the start of the study.
Gene doping a risky route to glory for athletes
Gene therapy offers Olympic athletes a tempting new way to go for the gold, but the technology is far too risky a way to cheat, a top gene therapy expert said on Thursday.
Gene doping - in which DNA is introduced into the body through an inactivated virus or by other means - can alter a person’s genetic make up and improve athletic performance by building muscle and increasing blood flow.
“We know we can introduce genes now to correct disease. It’s not a great leap to say we can also change genes related to normal human performance, like those required for athletic performance,” said Dr. Ted Friedmann, director of the Center for Molecular Genetics at the University of California’s San Diego’s School of Medicine.
