Why is pig spleen called "sha gan" (沙肝)?

Under normal circumstances, pig spleen has a relatively soft texture and a darker color, hence it is commonly known as "sha gan" (sand liver). The detailed explanation is as follows:

Pig spleen has a sweet taste and enters the spleen and stomach meridians in traditional Chinese medicine. It is believed to strengthen the spleen and stomach. Shaped flat and bright red, pig spleen is considered both a food and medicinal substance. Clinically, it is primarily used to treat conditions such as spleen and stomach deficiency in children and poor appetite, usually combined with other traditional Chinese herbs. On one hand, the pig spleen is a hematopoietic organ in pigs, with a soft texture that gives a sandy mouthfeel when eaten. On the other hand, its deep color resembles that of the liver, which is why it is called "sha gan." Patients should use it under the guidance of a physician and avoid taking it indiscriminately to prevent harm to health. As pig spleen is considered a heat-inducing food, individuals with excessive internal damp-heat or obesity should avoid consuming it, as it may exacerbate dampness in the body, leading to symptoms such as thick, greasy tongue coating and bodily edema. Moreover, pig spleen contains high levels of fat, which can be converted into body fat after consumption, increasing the risk of weight gain.

It is recommended to maintain a light and nutritious diet in daily life and avoid foods high in fat and sugar. Individuals may also engage in appropriate physical activities based on their personal condition, such as jumping rope or swimming, to promote metabolism and accelerate the elimination of harmful substances from the body.