Nowadays, more and more products have been developed to help people lose weight. Generally speaking, these products can help people lose weight through three ways, namely, controlling the appetite, accelerating the defecation and consuming fat and energy. Diet tea is one of the products used by people to reduce the weight. The tea can be made of tea leaves, semen cassiae and lotus leaves. These kinds of diet tea will be introduced as follows. 

The oolong tea contains abundant mineral subtances like iron and calcium and some other substances which can accelerate the secretion of digestive enzyme and dissolve the fat so as to decrease the absorption and accumulation of fat and sugar for the human body. People can also put ginger into oolong tea so as to strengthen the effect of losing weight and enhance the human immunity. People who are troubled by the accumulation of fat caused by the oily diet can choose oolong tea. However, the pregnant women should not drink the tea, as the density of caffeine in tea is high to increase the times of heartbeat and the burdens of heart and kidney.

The green tea contains the compounds of aromatic series which can dissolve the fat. In addition, the vitamin B1, vitamin C and caffeine contained in green tea can accelerate the secretion of gastric juice. The catechin can even resist the oxidation, improve the metabolism and remove the free radicals so as to render the accumulation of fat cells. People whose obesity is caused by the slow metabolism can choose green tea in daily life. However, it is unreasonable for people to drink tea immediately after dinner.

The tea made of lotus leaves plays an important role in removing the internal heat and nourishing the intestines. People who like to maintain the oily diet can drink this kind of tea every day. It is suitable for people to drink the tea for 4 to 6 times a day. In addition, people should drink the tea during the limosis.

The tea made of semen cassiae can improve the defecation so as to decrease the absorption of nutrients, which can help the human body lose weight and improve the constipation. People who are always troubled by constipation and the accumulation of toxins inside the human body can often drink the tea. However, people who are always attacked by stomachache and diarrhea can not choose the tea.