A new study has found no evidence that COVID-19 shots increase the incidence of Guillain-BarrĂ© syndrome, according to researchers. “This is important because we can say that there is no significant increased risk of Guillain-BarrĂ© syndrome in the population,” said study first author Mustafa Jaffry, a medical student at Rutgers New Jersey Medical School in…  read on >  read on >

Amyloid-beta plaques have long been linked to Alzheimer’s disease, with some scientists theorizing that the plaques actually cause the degenerative brain disease. But a new study suggests that the plaques are actually a symptom of what’s going on in the brain, rather than the cause of Alzheimer’s. Instead, decreasing levels of the “normal,” water-soluble form…  read on >  read on >

Could key differences in the trillions of bacteria found in the human gut actually affect the risk of becoming infected with HIV? A small, new study suggests the answer may be yes. The intriguing possibility stems from a detailed analysis of the gut bacteria (“microbiomes“) of 55 men, all of whom indicated they have sex…  read on >  read on >

When men become parents, a lot changes in their lives — less sleep and more time devoted to taking care of their children come to mind — but new research now suggests that distinct changes also unfold in a new father’s brain. Researchers scanned the brains of new fathers to discover and study those changes…  read on >  read on >

Breast cancer researchers and clinicians have made tremendous progress in reducing death rates in the past three decades, yet a racial gap persists in the United States. Even with the lower numbers of actual disease compared to white patients, Black women are still much more likely to die from the disease. The American Cancer Society…  read on >  read on >