5 Beverages the Longest-Living People in the World Drink Every Day for Healthy Aging

4. Black Tea

brown dried leaves on white surface

Black tea is good for you in many of the same ways that green tea is. It, too, has caffeine, L-theanine, flavonols, and polyphenols, which are antioxidants. So, it also protects against the development of a number of long-term illnesses, such as type 2 diabetes, cancer, stroke, and heart disease. And it helps the gut and digestion even more than green tea.