Vitamin D can help ward off flu, study suggests Fox News senior medical analyst Dr. Marc Siegel tells 'The Ingraham Angle' the benefits of 'miracle' Vitamin D and why testing is so important and more. NEW You can now listen to Fox News articles! Aging can't be stopped, but a daily pill could slow it down, according to new research led by Mass General Brigham in Boston. Among people who took a multivitamin every day for two years, biological aging slowed down by about four months, found the