New research indicates that some of the most dangerous brain injuries today don't come from hitting your head on a hard surface. In fact, sometimes they come from not hitting your head on anything.

Medical advice about implanted cardiac defibrillators obtained via an online message board appears to be accurate only half of the time, according to preliminary research presented at the American Heart Association’s Quality of Care and Outcomes Research Scientific Sessions 2018, a premier global exchange of the latest advances in quality of care and outcomes research in cardiovascular disease and stroke for researchers, healthcare professionals and policymakers.

At the 2018 National Rx Drug Abuse and Heroin Summit, National Institutes of Health Director Francis S. Collins, M.D., Ph.D., announced the launch of the HEAL (Helping to End Addiction Long-term) Initiative, an aggressive, trans-agency effort to speed scientific solutions to stem the national opioid public health crisis. Toward this effort, NIH is nearly doubling funding for research on opioid misuse/addiction and pain from approximately $600 million in fiscal year 2016 to $1.1 billion in fiscal year 2018, made possible from a funding boost by Congress.

In some cases men discover testicular cancer themselves, either unintentionally or while doing a testicular self-examination to check for lumps. In other cases, your doctor may detect a lump during a routine physical exam.

Mayo Clinic experts will be featured in “Health + Happiness With Mayo Clinic,” a new weekly half-hour program that will premiere on April 7 as part of the NBC Network’s Saturday morning programming block. With the addition of “Health + Happiness With Mayo Clinic” to the three-hour educational and informational programming block, “The More You Know,” viewers will continue to experience high-quality, inspiring stories about environmental stewardship, social innovators, health, civic engagement and diversity.

The Centers for Disease Control and Prevention (CDC) recommends those traveling to Brazil get a yellow fever vaccine at least 10 days before travel. "Currently, there are concerns regarding quite a large outbreak in Brazil that has been linked to yellow fever," says Dr. Nipunie Rajapakse, a pediatric infectious diseases specialist at Mayo Clinic. Yellow fever is a viral infection that is spread by mosquitoes.