As of 2015, research on the effects of caffeinated beverages, including oolong tea, suggests that the drinks improve mental alertness, explains WebMD. Oolong tea sweetened with sugar can be more effective than unsweetened tea. Some evidence suggests that women who consume tea, including oolong tea, on a regular basis are less at risk for ovarian cancer. In one study, women who drank at least two cups a day were half as likely to develop ovarian cancer as the control group.Continue Reading
Other research on oolong tea includes its effects on eczema, diabetes, high blood pressure and osteoporosis, notes WebMD. Individuals who consume four cups of oolong tea a day may reduce symptoms of eczema, particularly in cases that do not respond to other methods of treatment. Individuals with type 2 diabetes may be able to lower their blood sugar by consuming six cups a day for 30 days. Research on Chinese individuals suggests that drinking oolong tea daily reduces the risk of high blood pressure, and the effects improved for individuals who drank more than one or two cups a day. Consumption of oolong tea over a period of 10 years or longer may strengthen bones and reduce the effects of osteoporosis.
Other research on the benefits of oolong tea continues, according to WebMD. Inconclusive and ongoing research includes its effects on preventing cancer, tooth decay, obesity and other conditions.Learn more about Nutrition & Diets