Forget the mellow slacker image — pot smoking might actually make men more potent. Men who’ve smoked marijuana appear to have significantly higher sperm concentrations than those who’ve never given it a try, a new study reports. There’s also a potential link between pot use and testosterone, said senior researcher Dr. Jorge Chavarro. He’s an…  read on >

In states where marijuana is legal, teens smoking pot and then getting behind the wheel of a car is common, a new study finds. “There’s a general public zeitgeist that marijuana is a pretty safe drug,” said study co-author Darin Erickson, an associate professor at the University of Minnesota’s School of Public Health. “In actuality,…  read on >

Bouncing around at a trampoline park can be great fun, but a new study warns it can also be an invitation to sprains, strains and broken bones. Nationwide, more than 100,000 emergency room visits were related to trampoline injuries in 2014, according to the latest data from the U.S. Consumer Product Safety Commission. Injuries that…  read on >

When a person in his or her teens is depressed, there may be different warning signs than those shown by people older or younger, the American Academy of Family Physicians says. Here is the academy’s list of depression symptoms that typically affect teens: Trouble focusing, or showing signs of anxiousness. Anger, and frequent loss of…  read on >

Mammogram? Check. Pap test? Check. Blood pressure? Check. Hearing and vision? Check. Screenings are an important part of maintaining women’s health. They can detect disease when it’s most treatable and prevent serious problems, according to Dr. Lili Lustig. She is a family medicine specialist at University Hospitals Cleveland Medical Center in Ohio. To get the…  read on >

The benefits of breastfeeding are wide-ranging. For baby, they include protection against infections and illnesses, including asthma, as well as reducing the risk of sudden infant death syndrome (SIDS). Babies breastfed for six months are also less likely to become obese. For mom, breastfeeding decreases the risks of breast and ovarian cancers. There are financial…  read on >

A newborn’s vision isn’t as developed as an older child’s, although significant progress is made during the initial months of life, the American Optometric Association says. Although rare at this early age, signs of vision problems among newborns and young infants include: Excessive tearing – this may indicate blocked tear ducts Red or encrusted eye…  read on >

E-cigarette use is surging among American teenagers, with millions of kids flirting with nicotine addiction by regularly vaping. Unfortunately, these kids are going to face a rocky road if they try to kick their nicotine habit, experts say. There are no tested or approved methods for quitting e-cigarettes, said Linda Richter, director of policy research…  read on >

As abuse of injected heroin and other addictive opioids spreads throughout the United States, heart experts warn of a growing threat: strokes caused by infections contracted through dirty needles. “People need to be more aware that stroke can be a devastating complication of injecting opioids,” said the lead author of a new study, Dr. Setareh…  read on >

The research is in its early days, but Chinese scientists say they’re using bartenders’ tricks to stir up a new, reversible male contraceptive. In experiments with rats, the method successfully kept sexually active males from impregnating females for more than two months. “The two most widely used male contraceptives are condom and vasectomy,” noted a…  read on >