the ancients said that eating lotus seeds can rejuvenate and live forever. This is not credible, but there are many records about its medicinal value in nourishing the heart and calming the nerves, strengthening the brain and improving intelligence, and eliminating fatigue. For example, it is well documented in Shennong Materia Medica, Herbal Supplement, Compendium of Materia Medica and Compendium of Materia Medica. Modern pharmacological research has also confirmed that lotus seeds have many functions such as sedation, heart strengthening and anti-aging. Lotus seed is rich in nutrition, which contains not only a lot of starch, but also β-sitosterol, alkaloids and rich minerals and vitamins such as calcium, phosphorus and iron. Every 1 grams of lotus seeds contain 89 mg of calcium, and the phosphorus content can reach 285 mg. Although the potassium element is less than 2.1 mg, it ranks first among all animal and plant foods.

when lotus seeds are used as a health-care medicated diet, lotus seed cores are generally not discarded. Lotus seed core is the turquoise germ in the center of lotus seed, which tastes bitter and has the effects of clearing away heat, consolidating sperm, calming the nerves and strengthening the heart. Soaking and drinking 2 grams of lotus seed core in boiling water can treat irritability, unconsciousness and wet dream's spermatorrhea caused by high fever, as well as hypertension, dizziness and palpitation and insomnia.