Pu-erh tea causes weight reduction in some people, according to pubmed.gov. As of 2015, this finding is strongly supported by multiple human and animal studies.
Compounds found in the tea decrease the rate at which the body makes fat, and increase the rate at which the body breaks down fat. One such compound is called theabrownin.
Lower weight gain was seen in animals given pu-erh tea, says webmd.com.
Human trials yield similar results. After drinking pu-erh tea for 3 months, participants showed a slight reduction in body mass, according to pubmed. Men experienced more weight loss than women.
Pu-erh tea has also been shown to lower blood sugar and prevent heart disease.