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About 500,000 men have a vasectomy each year in the United States, preventing sperm from reaching the semen during ejaculation. While the operation is safe and highly effective in preventing pregnancy, it has its risks, the U.S. National Institute of Child Health and Human Development says. The agency says any general discomfort, bruising and swelling…  read on >

Children aren’t the only ones who need protection against a host of dangerous germs, the U.S. Centers for Disease Control and Prevention says. Vaccines that you receive as a child may wear off over time, the agency says. The list of vaccinations that you’ll need as an adult will vary, based on your age, lifestyle,…  read on >

Your need for calcium gets a lot of attention, but your body can’t use it without its partner, vitamin D, according to the American Academy of Orthopaedic Surgeons. Most adults need 1,000 milligrams of calcium each day. Recommendations for vitamin D range from the current recommended daily allowance of 600 International Units (IUs), all the…  read on >

The Old Woman in the Shoe may have lost a tooth or two. Nursery rhymes aside, a new study reports that the more children a woman has, the fewer teeth she has in her later years. Mothers of three had an average of four fewer teeth than moms with just two children, according to the…  read on >

You can add hearing loss to the many health risks of smoking, new research suggests. For the study, researchers analyzed eight years of health data on more than 50,000 people in Japan. After accounting for work-related noise exposure and other hearing loss risk factors, the investigators found that smokers were 1.2 to 1.6 times more…  read on >

A new study of pregnant women in the Caribbean further confirms that Zika virus causes birth defects, particularly if infection occurs early in pregnancy. About 7 percent of Zika-infected women in French territories of the Caribbean delivered babies that suffered from birth defects of the brain and eyes, researchers report. These numbers are close to…  read on >

Anxiety is a normal response to stress, but if it becomes overwhelming and difficult to conduct your daily routine, it may be time to seek help. Anxiety disorders affect nearly 1 in 5 people in the United States, the Office on Women’s Health says. Women are twice as likely as men to develop the problem.…  read on >

Eating one serving of green leafy vegetables per day is associated with slower age-related cognitive decline, recent research suggests. Reported in the journal Neurology — the study involved 960 adults with an average age of 81 and no sign of dementia. The difference between those who ate the greens and those who did not was…  read on >

If you’re planning a career change or wondering if a challenging job could have positive effects, research might provide some intriguing answers. In a 2014 study, scientists in Scotland used levels of job complexity based on the Dictionary of Occupational Titles for an analysis of more than 1,000 participants with an average age of 70.…  read on >

Many people think hookah smoking is less harmful than cigarettes, but they might not realize that hookahs can cause carbon monoxide poisoning, a medical expert warns. The devices — also called water pipes — are heated by burning charcoal. That releases carbon monoxide, a colorless and odorless gas. About 100 cases of carbon monoxide poisoning…  read on >