A new internal government document claims the Delta variant appears to cause more severe illness than earlier coronavirus variants and spreads as easily as chickenpox. In laying out the evidence that this variant looks like the most dangerous one yet, the document urges health officials to “acknowledge the war has changed,” the Washington Post reported.…  read on >  read on >

Extremely premature babies have a much higher risk of cerebral palsy and other neurological conditions than full-term infants, a large Israeli study affirms. Cerebral palsy — the name for a group of lifelong conditions that affect movement and coordination — is the most common cause of severe childhood physical disability and motor impairment. It can…  read on >  read on >

Higher levels of testosterone don’t give men or women an edge in life, claims a new study that challenges a common belief. “There’s a widespread belief that a person’s testosterone can affect where they end up in life. Our results suggest that, despite a lot of mythology surrounding testosterone, its social implications may have been…  read on >  read on >