New research delivers an answer to a burning question: When are COVID-19 patients most infectious? The answer? Two days before and three days after they develop symptoms. The findings highlight the importance of rapid testing and quarantine if someone is feeling sick, the study authors said. The researchers also found that infected people are more…  read on >  read on >

New research offers further evidence of a link between gum disease and heart disease. The ongoing Swedish study previously found that gum disease (“periodontitis”) was much more common in first-time heart attack patients than in a group of healthy people. In this follow-up study, the researchers examined whether gum disease was associated with an increased…  read on >  read on >

Students face a number of challenges as they head back to school this fall — from potential exposure to COVID-19 and other illnesses to injuries on the playing field. “This return to school season is like no other,” said Dr. Rochelle Walensky, director of the U.S. Centers for Disease Control and Prevention. “Schools must be…  read on >  read on >

Despite all of the criticism of online learning during the COVID-19 pandemic, new research suggests there was a silver lining: more shut-eye for middle and high school students. “Without the required transportation time or time required to get ready for school in the morning, online students were able to wake later, and thus get more…  read on >  read on >

Overdose deaths linked to illicit “designer” benzodiazepines have surged in the United States, as underground labs crank out new synthetic variations on prescription tranquilizers like Valium, Xanax and Ativan. Overdose deaths involving illicit benzos increased more than sixfold (520%) between 2019 and 2020, rising from 51 to 316, according to data from 32 states and…  read on >  read on >

A new approach to spinal cord stimulation may drastically reduce chronic back pain, a small pilot study suggests. The study, of 20 patients with stubborn low back pain, tested the effects of implanting electrodes near the spinal cord to stimulate it with “ultra-low” frequency electrical pulses. After two weeks, 90% of the patients were reporting…  read on >  read on >

Do you have an implanted defibrillator or pacemaker? Try keeping your smart watch or smart phone a few inches away from them. New research from the U.S. Food and Drug Administration finds that your phone or watch could interfere with implanted heart devices. Based on the new findings, heart patients and health care providers should…  read on >  read on >

More than 171 million people are fully vaccinated against COVID-19 in the United States, but the highly infectious Delta variant has left some with “breakthrough” cases nonetheless. These cases were anticipated, because the COVID vaccines weren’t designed to eliminate all virus infections, but rather to lower a person’s risk of severe illness and hospitalization. Even…  read on >  read on >