Fact or Fiction: You Decide
While numerous studies have found possible benefits, the actual benefits of drinking tea are not certain. Most research about tea’s health benefits is based on population (epidemiological) studies. Findings are limited because factors other than tea consumption could influence the results. Here’s some of what’s known about tea’s potential health benefits:
- Disease reduction: Black, oolong, green or white teas are produced from the leaves of the Camellia sinensis bush. The leaves are loaded with flavonoids and other polyphenols that work as antioxidants, possibly lowering the risk of some diseases.
- Cancer: It’s still unknown whether regular black tea consumption influences cancer rates. Early lab tests with white tea indicate it may protect against colon cancer in particular. So far, well-designed studies haven’t proven this.
- Memory: Studies are limited, but a recent one found that older adults in Japan who drank green tea daily showed less risk of memory difficulty, compared with those who didn’t drink tea regularly.
- Cardiovascular: It’s still uncertain if drinking tea over long periods might positively affect cholesterol levels, blood pressure and atherosclerosis. There’s some early evidence that regularly drinking green tea may reduce heart attack risk or atherosclerosis. There’s conflicting evidence on black tea consumption and heart attack risk reduction.
- Bone and joint health: Early laboratory research indicates green tea could be beneficial in reducing inflammation related to arthritis and slowing cartilage breakdown. Some early data indicate that regular tea consumption might improve bone mineral density in older women.
While there’s still much to learn about tea’s health benefits, the potential benefits seem to be in the cup, not in supplements or tea extract capsules. So far, there’s no certainty that the compounds in supplements are the same ones in tea, and even less certainty that these supplements might provide the same potential health benefits as tea.