Month: March 2013

Vitamin D pills may help reduce blood pressure in blacks, a new study suggests. Many blacks have low blood levels of vitamin D. With darker skin, less sunlight is available for the body to use to make vitamin D. Blacks also are more likely to have high blood pressure than whites. The study included 250 African-American adults. They were randomly divided into 4 groups. Three of the groups received daily vitamin D pills, in different doses. The fourth group took placebo (fake) pills. Three months later, researchers checked their blood pressure. Systolic blood pressure had dropped by 4 millimeters of mercury (mmHg) for people taking the largest vitamin D dose, 4,000 international units (IU). It fell 3.4 mmHg for those taking 2,000 IU. The drop was 0.7 mmHg for the smallest dose, 1,000 IU. Systolic pressure rose 1.7 mmHg for those who got placebo pills.

Veterans with symptoms of Gulf War Illness have more activity in part of their brains. Researchers saw the activity using functional MRI scans. They did the scans on 31 veterans, as well as 12 people without symptoms. Gulf War Illness is also called Gulf War Syndrome. As many as 30% of veterans deployed to the Persian Gulf have reported similar symptoms. They include pain, headaches, digestive problems and fatigue. The study was published March 20 in the journal PLOS ONE. USA Today wrote about it March 21.

Getting a mammogram every other year, rather than every year, did not increase the risk of advanced breast cancer in women ages 50 to 74, says a study. The study looked at data from more than 900,000 women. Data were collected between 1994 and 2008. Women who got less frequent mammograms were not more likely to be diagnosed with advanced breast cancer. This was true even for women taking estrogen replacement therapy, and for women with dense breasts. In 2009, the U.S. Preventive Services Task Force said that women should have mammograms every other year starting at age 50. The American Cancer Society still recommends annual mammograms starting at age 40. The study was published in the online version of JAMA Internal Medicine. Reuters wrote about it March 18.