Medical professionals warn against sodas, even diet sodas, and suggest you drink water or juice. McFadden, 101, rarely drank soda throughout her life and doesn't touch it today, she says. Instead, she drinks water, cranberry juice, milk or iced tea. Coffee and alcoholic beverages are also healthy when not consumed in excess. David Prince, M.D., says drinking two to three alcoholic drinks per week will keep you healthy longer. More From Forbes: America’s Healthiest Cities World’s Most Dangerous Places to Breathe The ‘Healthy’ Choices That Are Costing You The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.