Obese women can be more likely to have heavy monthly periods, and now new research hints at why. In addition to stirring up inflammation, excess weight may slow down the uterine repair process, U.K. researchers reported. Menstruation occurs when the lining of the uterus (endometrium) sheds each month, but the healing process stops the bleeding…  read on >  read on >

COVID-19 might have a tough new foe: The sun. New research shows that sunnier regions of the United States have lower COVID-19 death rates than cloudier areas, suggesting that the sun’s UV rays might somehow provide some protection against the disease. The effect is not due to better uptake of the healthy “sunshine vitamin,” vitamin…  read on >  read on >

There’s more than one kind of fungus living among lung tissue, but people can breathe easy knowing these species are for the most part harmless, scientists say. It’s normal for people to have fungi in their lungs, and using drugs like inhaled steroids won’t hurt them, a research team found. According to a team led…  read on >  read on >

At first glance, it appears that little will change between now and 2040 when it comes to the types of cancers that people develop and that kill them, a new forecast shows. Breast, melanoma, lung and colon cancers are expected to be the most common types of cancers in the United States, and patients die…  read on >  read on >

After a concussion, women may be at heightened risk of lasting physical and mental symptoms, a new study finds. The study of 2,000 concussion sufferers found that women were more likely than men to still have some symptoms one year later. The problems included fuzzy memory and difficulty concentrating, as well as headaches, dizziness or…  read on >  read on >

College is far more stressful for undergrads with ADHD than for their classmates, but it doesn’t have to defeat them. New research finds that resilience seems to be an important buffer. “The results offer hope to students because each of the resilience factors can be strengthened at any point in life either on one’s own…  read on >  read on >

Two COVID-19 vaccines appear to work well against a rapidly spreading coronavirus variant that arose in California, but less effective against a variant that first emerged in South Africa, researchers report. “The good news is the California variant does not appear to be a problem for our current vaccines,” said study author David Montefiori, director…  read on >  read on >