New York, NY (AHN)-According to researchers in the U.S. and South Africa, many women in the United States who are injection drug users and are also infected with HIV, do not routinely use condoms with their uninfected regular partners or with casual sex partners.

Lead investigator Dr. Mary H. Latka tells Reuters Health, "Forty percent of the HIV-positive women in our sample were having sex with at-risk male partners, and more than half of the time, condoms were not used consistently

Anemia occurs when there is a drop in the blood's ability to carry oxygen, because of a deficiency of red blood cells or their oxygen-carrying component, hemoglobin. Two main causes of anemia are lack of iron in the diet or blood loss, perhaps from internal bleeding, said the New Delhi Television Network.

Researchers from the University of Calgary, Alberta have uncovered that the identification of anemia in older individuals is a flag for adverse health outcomes.

The researchers used information from Calgary databases to investigate whether there was a relationship between anemia and hospitalization and death. They studied more than 17,000 adults 66 years of age and older. The group was followed from 2001 to the end of 2004, during which time there were 1983 deaths and 7278 hospitalizations for the first time

A new study by U.S. researchers concludes that a boom in gastric bypass surgery could lead to an increase in vitamin A deficiency among patients that raise their risk for blindness.

The U.S. researchers studied the medical histories of patients who were nearly blind or had very poor eyesight but no family history of blindness

A national survey released on Tuesday indicates a third of American men over the age of 39 report experiencing two or more symptoms of low testosterone (Low T), a condition that affects four to five million American males.

Medical professionals say Low T characteristics are marked by decreased energy, low libido, reduced muscle strength, increased body fat, weaker bones, and mood swings

According to health experts, four minutes outside in the sun is plenty, especially for fair-skin people, in order to produce enough vitamin D to keep bones healthy.

The study, conducted by the experts at the Australian National University, provides guidance on acceptable levels of sun exposure in the face of mixed messages about the affect of the sun's rays