The general components of garlic are moisture 60.3%, protein 8.4%, oil 0.1%and sugar 28.7%. One hundred grams of garlic provides about 138 kcal of heat, 200 mg of phosphorus and 0.2/0/mg of vitamin B/kloc-0. Garlic can produce rich flavor and active components through the action of enzymes. When garlic is crushed, the enzymes originally stored in the empty cells of garlic will be released, which will react with the aroma precursors to generate allicin active components, which are the components that produce the characteristic aroma of garlic, showing the unique spicy and irritating taste of garlic. Because allicin is unstable, it can be easily converted into other sulfur-containing components, such as diallyl sulfide and diallyl disulfide, etc. Most of these sulfur-containing components are important garlic active components with special physiological functions. Garlic essential oil contains many sulfur-containing active components formed by the transformation of allicin, for example, diallyl disulfide accounts for about 39% of the total essential oil, diallyl sulfide accounts for about 4%, and diallyl trisulfide accounts for about 31%.Many research reports show that these sulfur-containing active components have many important physiological functions for animals. The influence on cancer Modern scientific research shows that as early as 1957, scholars (Weisberger and Pensky) announced that garlic has an inhibitory effect on tumors, and then many scholars used garlic or its important active components to carry out experiments on tumor cell inhibition, all of which achieved positive results. There are also many scholars who have conducted experiments on different types of cancers, and have achieved good cancer inhibition effects in liver cancer, kidney cancer, skin cancer, esophageal cancer, gastric cancer, colon cancer, bladder cancer, breast cancer, cervical cancer, hematologic cancer's disease, lung cancer and prostate cancer. The results of these studies are a great boon to Taiwan Province, where these cancers are the highest cause of death. If all citizens can take garlic properly, I believe it will have a certain effect on reducing the probability of death due to cancer. Influence on Cardiovascular Diseases In China's traditional dietotherapy, Compendium of Materia Medica records that garlic can deal with the problem of adverse blood flow and heartache, while the related food therapies include garlic porridge, which has the effect of lowering blood pressure and is suitable for hypertension, arteriosclerosis and other diseases, and garlic mashing juice to treat hematemesis and heartache. Modern scientific research shows that arteriosclerosis is an important factor causing cardiovascular diseases, and there are many risk factors for arteriosclerosis, such as irreversible aging, male, genetic hidden causes and other factors, as well as smoking, hypertension, obesity, hyperlipidemia, hyperglycemia and diabetes, low-concentration high-density lipoprotein, high-concentration low-density lipoprotein and very low-density lipoprotein (VLDL), and blood coagulation. Many studies have shown that garlic has a significant influence on these reversible risk factors. For example, some scholars feed rabbits with garlic essential oil or raw garlic respectively, and after three or four months, they find that their serum cholesterol content has decreased, which can reduce the incidence of arteriosclerosis; Another scholar used garlic extract as an animal experiment to feed rabbits. The results showed that after more than six months' experiment, the concentration of high-density low-density lipoprotein and very low-density lipoprotein, which had adverse effects on arteriosclerosis, decreased, while the concentration of high-density lipoprotein, which was a favorable factor to reduce the incidence of arteriosclerosis, increased. In addition, many scholars experimented with human body, giving fresh garlic, fresh garlic juice or garlic powder respectively. After 3 ~ 26 weeks of different research time, it was found that the serum cholesterol content in human body decreased by 7.7 ~ 21.3%, which showed that it had a certain effect on reducing the incidence of arteriosclerosis. Influence on Diabetes Modern scientific research shows that allicin has the effect of lowering blood sugar and promoting the synthesis of insulin and liver sugar. Garlic essential oil resin (extracted with 95% alcohol) can significantly reduce the blood sugar of diabetic animals. The extract of cooked garlic has preventive effect on hyperglycemia caused by stress. The effect of detoxification "Compendium of Materia Medica" records that garlic has the effect of treating closed pepper poison, injection poison, scorpion sting and snake sting. Materia Medica records that the function of garlic is to kill insects, snakes and poison. Related food therapy is garlic boiled juice drink-treating crab poisoning; Pouring garlic juice and wiping the sore-treating furuncle and swelling. Modern scientific research shows that garlic extract can reduce the toxicity of cyclophosphamide, a cancer treatment drug. Our laboratory also found that diallyl sulfide, diallyl disulfide and diallyl trisulfide, which are important components of garlic essential oil, have positive effects on antioxidant and detoxification metabolic system in the liver at appropriate concentrations. It can also reduce the damage of aflatoxin B 1 to liver cells. Antibacterial and Insect-resistant According to Compendium of Materia Medica, the application of garlic in antibacterial and insect-resistant aspects includes back sore moxibustion, malignant furuncle, five-color erysipelas, dry and wet cholera, Shan Lan miasma, malaria cold and fever, cold malaria dysentery, diarrhea and dysentery, diarrhea and diarrhea, blood under intestinal poisoning, ghost abdominal pain, toothache, cerebral diarrhea and rhinorrhea, and headache. In the book Compendium of Materia Medica written by Wang Ang in the Qing Dynasty, it is recorded that the function of garlic is to eliminate plague, eliminate carbuncle and swelling, kill insects, snakes and poison. Indications: slicing moxa, moxibustion all carbuncle, malignant sore and swollen nucleus. Food therapy: garlic 1 head, simmer hot food, treat diarrhea; Garlic and ginger syrup: garlic15g, ginger15g, decocted in water, and taken with brown sugar, to treat colds; Garlic and ginger sugar decoction: garlic15g, brown sugar 6g, ginger L tablets, decocted in water, 3-4 times a day, to treat children's pertussis; Garlic porridge: it has the effect of stopping dysentery and is suitable for acute and chronic dysentery; Eat 7 slices of raw garlic and 7 slices of cooked garlic to cure the miasma in the mountains; Wash garlic soup to treat women's vulva swelling. Modern scientific research shows that the water extract of garlic or its important component ajoene has antibacterial effect on fungi (such as Candidaalbicans). The freeze-dried water extract of garlic has antibacterial effect not only on fungi, but also on bacteria, yeasts and viruses. As for insect resistance, diallyl disulfide and diallyl trisulfide, the important components of garlic, have insect repellent effect on mosquitoes; In addition, chopped garlic and the n-hexane extract of garlic have insect repellent effect on carps. From the above research results, we can know that garlic does have certain antibacterial and insect-resistant effects, so diseases or infectious diseases caused by viruses, bacteria, fungi or insects harmful to human body should be prevented or treated by eating garlic.