The older you are, the greater your statistical odds are of dying from the coronavirus. But underlying health problems, including diabetes, heart conditions and obesity, are also significant risk factors, says Dr. Cohen. Such conditions can be caused by factors beyond our control, including genes. But diet and exercise also often play a role. The pandemic is helping raise awareness of the concept of “biological age,” or the internal pace of aging, says Dr. Cohen. “Age is the No. 1 cause of risk for mortality from Covid, but it’s not chronological age, it’s biological age,” he says. As wearable devices become more prevalent, more of us will track measures of underlying health, including blood pressure and glucose levels. Medicine may eventually assign patients a biological age to help them make better-informed decisions, Dr. Cohen says.6. We will embrace healthier lifestyles