Philadelphia: Oranges and other citrus fruits are good for you — they contain plenty of vitamins and substances, such as antioxidants, that can help keep you healthy. Now a group of researchers reports that these fruits also help prevent harmful effects of obesity in mice fed a Western-style, high-fat diet.

Philadelphia: Most people start racking up scars from an early age with scraped knees and elbows. While many of these fade over time, more severe types such as keloids and scars from burns are largely untreatable. These types of scars are associated with permanent functional loss and, in severe cases, carry the stigma of disfigurement. Now scientists are developing new compounds that could stop scars from forming in the first place.

Most often mosquitoes simply leave people with uncomfortable, itchy bites. To help protect your family from mosquitoes as you enjoy the outdoors, Dr. Suzan Mazor, medical director of Toxicology at Seattle Children’s, shares the following advice.

Los Angeles: For some perspective, in the seven years between 2005 and 2012, liver cancer rates increased by 33 percent among white men and by 21 percent among Latino men. The increase was more modest with women in these groups — partially because liver cancer is more common in men.

Los Angeles: For the first time in Los Angeles County history, more Latinos than whites are being diagnosed with testicular cancer, a malady once regarded as a white man’s disease.

Washington: Commonly touted as “good cholesterol” for helping to reduce risk of stroke and heart attack, both high and low levels of high-density lipoprotein (HDL) cholesterol may increase a person’s risk of premature death, according to new research at Washington University School of Medicine in St. Louis and Veterans Affairs St. Louis Health Care System.

You probably think often about how to stay as fit and healthy as possible. But, you may not be giving as much thought to the health of your teeth.

Birmingham: An occasional battle with bad breath is unfortunately an experience many share, and researchers estimate that more than 80 million persons suffer from chronic halitosis.

Washington: New research from North Carolina State University finds that having a positive attitude about aging makes older adults more resilient when faced with stressful situations.

Minneapolis: There is growing evidence that sleep disorders like insomnia and sleep apnea are related to stroke risk and recovery from stroke, according to a recent literature review. The review published in the recent online issue of Neurology, the medical journal of the American Academy of Neurology.