Scientists from Mass General Brigham explored the associations between telomere length—which decreases as a person ages or is exposed to unhealthy environments—and the risk for age-related brain diseases. The research team found evidence suggesting that healthier lifestyle choices could mitigate telomere length-associated risks.

In the jungle of microbes living in your gut, there’s one oddball that makes methane. This little-known methane-maker might play a role in how many calories you absorb from your food, according to a new study from Arizona State University.

Mass General Brigham researchers scrutinized this concern with the first-ever study comparing substance use disorder rates in patients with ADHD who were prescribed stimulant medications during in-person versus virtual appointments. They found that, overall, telehealth was not associated with increased risk of substance use disorder. Still, the researchers noted the importance of comprehensive diagnoses and routine follow-ups.