Dioscorea - Chinese Yam Root - Shan Yao


Dioscorea, whose literal name in Chinese is "Mountain Medicine," is one of the more widely used tonic herbs. Because the herb has a neutral "atmospheric energy," and therefore is neither hot nor cold, it benefits both the Yin and the Yang of the Lungs, Kidneys and Spleen. It builds Spleen Qi, which results in strong digestion and metabolism. Dioscorea is very effective at treating many types of diarrhea.

Dioscorea helps strengthen the ability to build Qi in the Lungs and generally improve Lung functioning, which in turn strengthens the whole body. It is commonly used in formulations designed to relieve coughing due to weak Lung condition.

Dioscorea is a valuable herb In the process of rebuilding and maintaining healthy Kidney functions. It has both Yin Jing building power and an astringent action which helps consolidate the Kidney energy, preventing "leaking" of fluids. It is widely recommended for the "leakage" problems which occur as a result of a deficiency of the Kidney, such as spermatorrhea, leukorrhea and frequent urination. It is also often used by people suffering night sweats as a result of general weakness or chronic consumptive illness. Dioscorea will help strengthen the back and knees, like all herbs that build the Kidney. Diabetes is a disorder for which Dioscorea is very highly recommended in Asia.

Used with Codonopsis (or American Ginseng), Ophiopogon, Schizandra and other herbs that benefit the Lungs, Dioscorea helps strengthen the ability to build Qi in the Lungs and generally improve Lung functioning, which in turn strengthens the whole body. It is commonly used in formulations designed to relieve coughing due to weak Lung condition.

Dioscorea is a valuable herb In the process of rebuilding and maintaining healthy Kidney functions. It has both Yin Jing building power and an astringent action which helps consolidate the Kidney energy, preventing "leaking" of fluids. It is widely recommended for the "leakage" problems which occur as a result of a deficiency of the Kidney, such as spermatorrhea, leucorrhagia and frequent urination. It is also often used by people suffering night sweats as a result of general weakness or chronic consumptive illness. In each of the above mentioned cases, Dioscorea will be combined with different herbs. Dioscorea will help strengthen the back and knees, like all herbs that build the Kidney.

Diabetes is a disorder for which Dioscorea is very highly recommended in Asia. The vast majority of Chinese people with diabetes drink a tea of Dioscorea, or a blend of Dioscorea with other herbs, throughout the day to help with the symptoms of dysphoria and thirst.

Dioscorea is a powerful herb for treating dehydration be it due to an illness, excessive sweating from to physical activity, due to the weather, or whatever. Dioscorea is a superb herb for helping replenish body fluids when taken as a tea or with sufficient water.

Dioscorea is a safe and mild herb that can be used as a nutrient tonic on a regular basis. Being a type of yam, it is often included in food products, and cooked in routine Chinese cooking as a health food. The slices of Dioscorea are quite edible. Dioscorea can easily be crushed or ground into a powder which makes an excellent ingredient in almost any cooking where flour, grain or starch might otherwise be used.


Primary Combinations
Dioscorea may be used alone or combine with:

1. Ginseng, Atractylodes, Poria, Licorice and Jujube Date to strengthen the Spleen and Lungs and to build qi
2. Lycium and Schizandra to tonify the Kidneys and
3. American Ginseng or Panax Ginseng Root to moderate blood sugar levels
4. Poria to improve the urinary function of the Kidney
5. Dang Gui and White Peony Root to regulate female hormonal functions

References: .1) Radiant Health, Ron Teeguarden, Warner Books (1998), 186-187

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