They used to live in caves, hunt their food and were generally tougher than modern-day humans. But a new study finds if you have Neanderthal genes, you are twice as likely to develop a life-threatening form of Covid. DNA from the species that went extinct around 40,000 years ago is associated with autoimmune diseases, type 2 diabetes and prostate cancer. A team of Italian researchers found people with three Neanderthal gene variations were twice as likely to have severe pneumonia and three times as likely to be hospitalized with a ventilator after contracting the virus. While the findings were part...