🌿 Folk Prescriptions

Yam is the tuber of Dioscorea opposita, scientifically known as Dioscorea. The best quality comes from Bo'ai, Qinyang, Wuzhi, and Wenxian in Henan Province, historically called "Huai Yam," one of the famous "Four Huai Medicinals." Yam serves both as a delicious vegetable and a commonly used traditional Chinese medicine.
Dr. Li Zhongxin, Deputy Chief Pharmacist at Henan Provincial Hospital of Traditional Chinese Medicine, explains that yam tastes sweet and has a mild nature, entering the spleen, lung, and kidney meridians. It offers multiple benefits: strengthening the spleen, nourishing the lungs, consolidating the kidneys, and enriching essence. Its medicinal use dates back to the "Classic of Mountains and Seas." The first pharmacopeia of Han Dynasty, "Shennong Bencao Jing," listed it among superior herbs for "tonifying deficiency, dispelling cold, building muscle, and long-term use improves hearing and vision." The idea that yam "nourishes kidney qi, strengthens the spleen, stops diarrhea, transforms phlegm, and moistens skin" first appeared in Li Shizhen’s "Compendium of Materia Medica." According to "Ri Hua Zi Bencao," yam "assists the five organs, strengthens tendons and bones, enhances mental clarity and tranquility, treats spermatorrhea and forgetfulness." "Yao Pin Hua Yi" states: "Yam is gently warming without sudden effects, slightly fragrant without drying, steadily regulating lung function, ideal for treating chronic cough due to lung deficiency. Its sweet taste and fragrance aid spleen function, effectively treating spleen deficiency diarrhea, fatigue, lack of energy, and limb weakness."
Modern TCM commonly uses yam to treat chronic diarrhea due to spleen deficiency, chronic enteritis, pulmonary deficiency cough, chronic gastritis, diabetes, spermatorrhea, enuresis, and leukorrhea. In folk practice, yam is often used to recover from post-illness or postpartum weakness, yielding excellent results.
Modern scientific analysis reveals yam’s key feature: high content of mucilage protein. This polysaccharide-protein complex provides unique health benefits, preventing fat deposition in blood vessels, maintaining vascular elasticity, and delaying early onset of atherosclerosis. Yam reduces subcutaneous fat accumulation, prevents connective tissue atrophy, and helps prevent rheumatoid arthritis and scleroderma. Many tonifying formulas—such as Liuwei Dihuang Wan, Qi Ju Dihuang Wan, Gui Pi Tang, Shen Ling Bai Zhu San—contain yam. Yam’s dopamine expands blood vessels and improves circulation. It also contains choline, 16 amino acids, polyphenol oxidase, protein, carbohydrates, vitamins, fats, amylase, and essential minerals like iodine, calcium, iron, and phosphorus—making it an excellent aid for digestion and blood sugar control. Most importantly, for modern beauty-conscious women, yam is a high-nutrient, low-calorie food, safe to eat freely without fear of weight gain—a natural slimming delicacy.
Yam can be prepared in many ways: stir-fried, blanched, marinated, stewed, braised, or roasted—ideal for nutritional meals and therapeutic diets. Dr. Li Zhongxin recommends boiling yam into porridge for long-term consumption: simple, easy, and maximizes nutritional value. Contraindicated for those with dampness stagnation, fullness, or excess pathogenic factors.
Yam Porridge: Fresh yam 150 grams, washed and peeled, cut into chunks. Glutinous rice 150 grams, rinsed clean. First boil rice into porridge, add yam chunks when half-cooked. Serve when porridge is done. Suitable for spleen deficiency diarrhea, fatigue, listlessness, limb weakness, poor appetite, indigestion, chronic cough due to lung deficiency, kidney deficiency with spermatorrhea, diabetes, palpitations, night sweats, and leukorrhea in women. Particularly beneficial for middle-aged and elderly people in spring.
Yam and Goji Berry Porridge: Fresh yam 200 grams, peeled and chopped. White rice 30 grams, rinsed. Sour jujube seeds 5 grams, cleaned and lightly crushed, placed in a cloth bag. Goji berries 30 grams. First boil yam and jujube seed bag, when porridge is about 70% cooked, add goji berries, then steam until fully cooked. This medicinal porridge strengthens the spleen, nourishes lung and kidney essence, calms the mind, and aids sleep.