Ancient and modern books and records such as Compendium of Materia Medica, Diet with Interest, Formula of China Herbal Tea, Health House of Traditional Chinese Medicine, Beauty and Health-keeping Method of Lotus Leaf Tea all think that lotus leaf has the functions of "eliminating dampness and resolving phlegm, reducing fat and weight, moistening intestines and relaxing bowels". Modern scientific research has also confirmed that lotus leaf contains many alkaloids such as nuciferine, as well as natural components such as flavonoid glycosides and nuciferin, which can promote metabolism and accelerate fat decomposition, and has a good curative effect on obese patients.