1. Yam is a medicinal material for both medicine and food, and it is a component of many Chinese patent medicines. To sum up, there are mainly the following four points:
1, spleen and stomach, help digestion
Yam contains amylase, polyphenol oxidase and other substances, which is beneficial to the digestion and absorption function of the spleen and stomach. Blindly nourishing the spleen and stomach is a dual-purpose product of medicine and food. Both spleen yang deficiency and stomach yin deficiency can be eaten. Clinically, it is often used with Weichang Decoction to treat spleen and stomach weakness, anorexia, fatigue, diarrhea and other symptoms.
2. Nourishing kidney and essence
Yam contains a variety of nutrients, which has the functions of strengthening body, nourishing kidney and benefiting essence.
Step 3: benefit the lungs and relieve cough
Yam contains saponin and mucus, which can lubricate and moisten dryness, so it can benefit lung qi, nourish lung yin and treat lung deficiency with excessive phlegm and persistent cough.
4, prolong life
Yam contains a lot of mucin, vitamins and trace elements, which can effectively prevent the deposition of blood lipids on the blood vessel wall, prevent heart disease, and achieve the effects of benefiting the heart, calming the nerves and prolonging life.
Second, yam is a good medicine for ordinary people, but attention should be paid to the following four types of people:
1, constipation
Yam is rich in starch, and patients who are prone to constipation should stay away from or eat less yam. Because yam is hot, it is a warm food. Eating yam for constipation patients is tantamount to adding fuel to the fire.
2. People who love hot pot
Many people like to eat spicy hot pot, but spicy hot pot is a spicy thing that gets angry. Adding yam when eating hot pot will make people get angry. This leads to dry throat, sore throat and acne.
3. Diabetic patients
Although yam contains mucin, it has the function of lowering blood sugar, but yam is a rhizome food with high starch content. If you eat too much, it will not lower your blood sugar, but will lead to an increase in your blood sugar.
Therefore, diabetics should not eat too much yam at a time. If some patients prefer to eat yam, then the amount of staple food should be reduced appropriately, otherwise it will be counterproductive.
4. Prostate cancer patients and breast cancer patients
Diosgenin contained in yam can synthesize hormones such as testosterone and estrogen in human body. Therefore, it is not suitable for male prostate cancer patients and female breast cancer patients.
Yam is a very delicate food with a very short shelf life. Many dry goods have been fumigated with sulfur in order to extend the shelf life and sell well. How can you tell when you buy it?
Third, although the medicine is good, the choice is the key.
1, look at the appearance
After fresh yam slices are dried in the sun, the surface will wrinkle, and the longitudinal texture can be clearly seen as convex as small bubbles, and the color is yellow; The yam slices smoked with sulfur become white and full.
Step 2 smell it
Sulfur-free yam has a fresh aroma and no peculiar smell; Sulfur-smoked yam has a pungent smell of sulfur.
Step 3 taste it
Sulfur smoked yam has a sour taste, which is difficult to swallow when it stings the throat; Sulfur-free yam tastes a little sweet or tasteless.