A report published Online First by Archives of Ophthalmology, one of the JAMA/Archives journals, reveals that adults with retinitis pigmentosa who took vitamin A supplements over a period of four to six years, showed slower decline in annual rates of distance and retinal visual acuities by consuming a diet rich in omega-3 fatty acids. Retinitis pigmentosa is an eye disease in which there is damage to the retina. Approximately 2 million individuals (about 1 in 4, 000) worldwide are affected by the condition, which typically results in night blindness. Symptoms usually first appear in childhood, but severe vision problems, such as loss of side vision, tunnel vision, and virtual blindness, do not usually develop until early to late adulthood. Visual acutiy data from 3 human trials conducted from 1984 to 1991, 1996 to 2001 and 2003 to 2008, involving individuals with typical retinitis pigmentosa, were examined by Eliot L.
Mild-to-moderate Parkinson's disease patients who practice Tai Chi were found to experience significant benefits, including better posture, fewer falls, and improved walking ability, researchers from the Oregon Research Institute (ORI) reported in NEJM (New England Journal of Medicine ). The authors added that Tai Chi was superior for the Parkinson's patients than stretching or resistance training regarding several symptoms related to the disease. An individual with Parkinson's disease whose movements are impaired, especially when standing balance is undermined, finds it considerably harder to function in everyday life events and chores; their quality of life is severely affected. As the disease progresses, balance becomes more of a problem, and subsequently, so does walking. Experts say that physical activity, i.
Could the use of vitamin and mineral supplements in a regular diet help to reduce the risk of colon cancer and protect against carcinogens? A study published in the Canadian Journal of Physiology and Pharmacology (CJPP) found that rats given regular multivitamin and mineral supplements showed a significantly lower risk of developing colon cancer when they were exposed to carcinogens. "It has been unclear whether multivitamin supplementation to cancer patients is helpful, has no effect, or is even detrimental during therapy, " commented Dr. Grant Pierce, Editor of CJPP. "This study is important because it gives some direction to cancer patients in desperate need of guidance on the value of multivitamins and minerals administered during cancer." The authors studied rats that were fed a high-fat diet (20% fat) over a 32 week period.
A study published in Cancer Prevention Research, a journal of the American Association for Cancer Research, reveals that breast cancer cell proliferation was not lowered with soy isoflavone supplements in a randomized human trial. Isoflavone are components of soy foods believed to have anti-estrogen activity. Results of the study are consistent with findings from earlier investigations that were designed to examine cancer prevention benefits of dietary supplements, according to lead researcher Seema A. Khan, M.D., professor of surgery at the Robert H. Lurie Comprehensive Cancer Center of Northwestern University. Khan explains: "Simply put, supplements are not food. Although soy-based foods appear to have a protective effect, we are not seeing the same effect with supplementation using isolated components of soy, so the continued testing of soy supplements is likely not worthwhile.
Most athletes can testify to the pain-relieving, recovery-promoting effects of massage. Now there's a scientific basis that supports booking a session with a massage therapist: On the cellular level massage reduces inflammation and promotes the growth of new mitochondria in skeletal muscle. The research, involving scientists from the Buck Institute for Research on Aging and McMaster University in Hamilton Ontario appears in the online edition of Science Translational Medicine. The study involved the genetic analysis of muscle biopsies taken from the quadriceps of eleven young males after they had exercised to exhaustion on a stationary bicycle. One of their legs was randomly chosen to be massaged. Biopsies were taken from both legs prior to the exercise, immediately after 10 minutes of massage treatment and after a 2.