Weight Loss

• Oolong tea has gained much popularity in the western culture do to its weight-loss effects. Several studies have indicated that regularly consuming oolong tea, in addition to a healthy diet, can result in faster weight loss. The reason for this is because the tea aids in prevention of carbohydrate absorption. To enhance the effect of oolong tea on weight loss, you should consume it one hour before you workout.

Digestion

• Drinking oolong tea every day can help your digestive system. Oolong tea is a natural diuretic and can reduce toxins in your body. It can also stimulate your metabolism, helping the increased speed and effectiveness of your digestion.

Cholesterol

• According to a 2001 study, oolong tea can reduce your cholesterol level. Drinking one liter of oolong tea each day for one month reduced participant's cholesterol levels, and doctors think that it is because of the high anti-oxidant content of the tea.

Treating Diabetes

• Oolong tea can have a positive effect in the treatment of Type 2 diabetes. Scientists have found that the regular consumption of oolong tea can stimulate insulin in the body, which can help treat the disease.

Negative Effects

• Though studies of oolong tea have shown a wide variety of positive effects of regular consumption, there are a few negative effects. Individuals who are sensitive to caffeine should avoid black tea, including oolong tea. Some health professional also advise pregnant or lactating women to also avoid black teas. All tea contain an acid called oxalate. Though it is very unlikely, excessive consumption of tea and oxalate could cause kidney damage.