The unique medicinal efficacy of seabuckthorn and its mechanism. Effects on cardiovascular diseases: It has a very good preventive and therapeutic effect on ischemic cardiovascular diseases, such as coronary heart disease, angina pectoris, myocardial infarction, arrhythmia, myocardial ischemia and hypoxia, heart failure, myocarditis, rheumatic heart disease and chronic cardiac insufficiency, and also has a very good effect on improving heart function and relieving chest tightness, palpitation and shortness of breath. Medical clinic shows that flavonoids of Hippophae rhamnoides L. and other phenolic compounds, β-sitosterol, betaine and other active substances can reduce hypertension, soften blood vessels, prevent atherosclerosis, reduce blood viscosity, inhibit platelet aggregation, improve blood circulation, reduce cholesterol and triglycerides in blood, reduce low-density lipoprotein, remove deposits on blood vessel walls, restore vascular elasticity, increase coronary blood flow, reduce myocardial oxygen consumption and enhance heart function. Flavonoids from Hippophae rhamnoides L. can play the role of anti-arrhythmia, anti-myocardial ischemia, reducing the area of myocardial infarction, relieving angina pectoris and improving cardiac function by scavenging active oxygen free radicals. Second, the role of cerebrovascular diseases: it has a good preventive and alleviating effect on ischemic cerebrovascular diseases, such as cerebral ischemia, cerebral thrombosis, cerebral infarction, cerebral arteriosclerosis and the resulting symptoms such as headache, dizziness, unclear language, numbness of hands and feet, slow movement, weakness and stiffness of limbs. It has a good rehabilitation effect on symptoms such as hemiplegia, aphasia and dementia caused by it. Effective components such as total flavonoids of Hippophae rhamnoides can directly remove superoxide radical and hydroxyl radical, reduce hypertension, hyperlipidemia and blood viscosity, inhibit excessive platelet aggregation, soften blood vessels, improve blood circulation, prevent arteriosclerosis and improve blood supply and oxygen supply to the brain. 3. Effects on metabolism and immune system: bioactive components such as total flavonoids of Hippophae rhamnoides L. have different degrees of regulation on immune system, obvious regulation on humoral immunity and cellular immunity, and also have certain antiallergic effects, thus enhancing human disease resistance. This is because the effective components such as total flavonoids of Hippophae rhamnoides have the functions of scavenging free radicals and improving immune function, so they have good clinical effects on various immune system diseases such as low immunity. In addition, it also has a certain effect on improving human metabolic function. Flavonoids can also regulate thyroid function and make hyperthyroidism return to normal. 4. Anti-tumor and anti-cancer effect: The bioactive components in Hippophae rhamnoides L., such as anthocyanin, picroside, coumarin and 5- hydroxytryptamine, have obvious anti-cancer activity and anti-cancer effect. It has certain inhibitory and killing effects on cancer cells in human body, and also has the function of blocking carcinogens. But also can improve the autoimmune function of cancer patients, enhance their resistance to cancer, reduce the side effects of radiotherapy and chemotherapy, and promote the rehabilitation of cancer patients. Especially for cancers of the digestive system such as gastric cancer, esophageal cancer, rectal cancer and liver cancer, the effect is obvious. 5. Effect on respiratory diseases: Hippophae rhamnoides L. has the functions of relieving cough and asthma, benefiting lung and resolving phlegm in traditional medical theory, and has good curative effect on respiratory diseases such as chronic pharyngitis, bronchitis, sore throat, asthma, cough and excessive phlegm, which is mainly related to the anti-inflammatory effect of flavonoids in Hippophae rhamnoides L. and the promotion of capillary blood circulation. 6. Effect on digestive system diseases: Seabuckthorn contains a lot of nutrients such as amino acids and organic acids, as well as phenolic compounds such as chlorogenic acid, which can promote the biosynthesis of gastric acid and stimulate the secretion of gastric juice. Therefore, Hippophae rhamnoides L. has the functions of resolving food stagnation, invigorating spleen and stomach, soothing the liver and benefiting qi. It has excellent curative effect on dyspepsia, abdominal distension and abdominal pain, gastritis, gastric and duodenal ulcer, enteritis and chronic constipation. Seven. Protective effect on liver: organic acids such as malic acid and oxalic acid contained in seabuckthorn can reduce the toxicity of antibiotics and other drugs and protect the liver. Lecithin and other phospholipid compounds in Hippophae rhamnoides L. are components with high biological activity, which can promote cell metabolism, improve liver function, and resist fatty liver and cirrhosis. In addition, seabuckthorn oil has obvious protective effect on heart, liver, viscera and bone marrow. Eight, anti-inflammatory, promoting tissue regeneration: Seabuckthorn oil extracted from Seabuckthorn is rich in VE, carotene, carotenoids, β-sitosterol, unsaturated fatty acids and so on. , can promote the body's metabolism, is conducive to the recovery of damaged tissue, the development of subcutaneous tissue inflammation, enhance the anti-inflammatory effect of inflammatory center, and obviously promote ulcer healing. Therefore, seabuckthorn oil has a good clinical effect on radiation injury, burn, scald, bedsore, dermatitis, mucositis, endometritis, cervical erosion, gastric and duodenal ulcer, as well as chloasma and chronic skin ulcer. It also has a good effect on postoperative wound healing, eliminating pain and reducing adverse reactions. Nine, brain and intelligence, promote children's growth and development: Seabuckthorn contains a variety of amino acids, vitamins, trace elements, unsaturated fatty acids (EPA. DHA) has a good promoting effect on children's intellectual development and physical growth. Taking seabuckthorn juice for a long time has a good effect on improving children's intelligence level, reaction ability and maintaining vigorous energy and physical strength. X. Anti-aging effect: