Drinking milk tea in moderation is generally not harmful to the human body, but excessive consumption of milk tea can cause obesity, increase the risk of chronic diseases, affecting sleep and so on. 1. Obesity: milk tea contains a lot of sugar, very easy to cause excess sugar in the body, resulting in obesity; creamer also contains trans fatty acids that are not easily digested and absorbed by the body, these fatty acids accumulate in the body for a long time, will lead to obesity. 2. Increase the risk of chronic diseases: milk tea contains a large number of saturated fatty acids, these fatty acids will increase the speed of cholesterol production, easy to cause vascular sclerosis, thus triggering hypertension, diabetes, high blood cholesterol and other diseases increased risk. 3. Impact on sleep: some milk tea contains more caffeine and other substances, if often consumed in large quantities, may lead to excessive nerve excitation, affecting normal sleep. It is recommended to drink milk tea in moderation to avoid harm to the human body due to excessive consumption of milk tea, in addition, diabetic patients, body type is too obese and other people are not recommended to drink.