Archive for July, 2012
After a hospitalization, being discharged is a key step on the road to recovery. But that road can take a dangerous turn—namely, a serious problem with one or more medications. It’s a common problem that many people experience within a few weeks of leaving the hospital. Researchers at Brigham and Women’s Hospital now report in […]
Daily exercise appears to reduce a woman’s risk of developing breast cancer, according to a study published online in the journal Cancer. The type or intensity of the exercise didn’t seem to matter, as long as it was done often. How much exercise is needed to lower breast cancer risk? In this study of 3,000 women, 10 to 19 hours a week (about two hours a day) had the greatest benefit. Age didn’t seem to matter—physical activity reduced breast cancer risk in younger women during their reproductive years and older women after menopause. What did make a difference in the effect of exercise was weight gain—especially after menopause. Gaining a significant amount of weight essentially wiped out the benefits of exercise on breast cancer risk in older women.
The FDA has approved a new kind of PSA test for prostate cancer that its maker claims can help doctors do a better job of telling the difference between prostate cancer and less worrisome conditions such as prostate infection or benign prostate enlargement. The test, called the Prostate Health Index (PHI), should become available in the U.S. later this summer. The PHI combines measurements of three kinds of prostate specific antigen (PSA), a protein produced by the prostate gland. In theory, the combination could help reduce the number of men who undergo prostate biopsies when their PSA levels are slightly above normal, in the 4 to 10 nanogram per milliliter range. But doctors must take care not to allow use of the PHI test to worsen the existing overdiagnosis and overtreatment of low-risk cancers, according to Dr. Marc B. Garnick, an expert in prostate cancer at Harvard Medical School and editor in chief of HarvardProstateKnowledge.org.