Rehmannia glutinosa, also known as Shudi (熟地), is an excellent traditional Chinese herbal material. It is a commonly used herb in daily life with a wide range of applications and can alleviate certain diseases. Shudi is often used to treat conditions such as postpartum weakness and abdominal pain. Let’s explore the efficacy and usage of Rehmannia glutinosa, as well as its dietary precautions!
Efficacy and Usage of Rehmannia Glutinosa
1. Delays Aging
Rehmannia glutinosa can effectively prevent premature cellular aging and enhance cellular function, making it one of the best anti-aging herbs. If you want to reduce the wrinkles on your face, brew some Rehmannia glutinosa to drink!
2. Nourishes Blood and Supplements Deficiency
Rehmannia glutinosa is sweet, warm, and moistening, nourishing yin and benefiting essence to generate blood. It is commonly used to nourish blood and supplement deficiency. When combined with other herbs, it can assist in treating symptoms such as blood deficiency, dizziness, palpitations, insomnia, irregular menstruation, and excessive bleeding.
3. Enhances Immunity
According to traditional Chinese medicine, regular use of Rehmannia glutinosa can enhance the body’s immunity, thereby improving disease resistance. It has a good effect on strengthening the body.
4. Cardiotonic and Diuretic
Rehmannia glutinosa has cardiotonic and diuretic effects, especially beneficial for individuals with heart weakness. When combined with Mu Tong (木通), its diuretic effect is enhanced.
5. Nourishes Yin and Supplements the Kidneys
Modern pharmacological studies have shown that Rehmannia glutinosa can elevate plasma T4 and aldosterone levels, confirming its strong yin-nourishing properties. Additionally, it is a key ingredient in the Liu Wei Di Huang Wan (六味地黄丸), which is effective for kidney supplementation. It is often used to assist with symptoms such as lower back and knee weakness, liver and kidney yin deficiency, night sweats, and nocturnal emissions.
Dietary Precautions for Rehmannia Glutinosa
1. Individuals with spleen deficiency, phlegm accumulation, and qi stagnation should use caution. Although Rehmannia glutinosa is rich in nutrients, its sticky nature can hinder digestion. Therefore, those with weak spleen and stomach, phlegm accumulation, abdominal distension, and poor appetite should avoid it.
2. Do not use copper or iron utensils for preparation and cooking. As noted in “Lei Gong Pao Zhi Yao Xing Jie” (雷公炮制药性解), “When harvesting fresh Rehmannia glutinosa, remove the white skin, steam it in a ceramic pot, let it cool, mix with wine, steam again, and dry. Avoid contact with copper and iron, as it can harm the kidneys and lead to white hair in men and loss of vitality in women.”
3. Avoid consuming with radishes, the three whites (white onion, white leeks, and white garlic), and pig’s blood.
4. Avoid use during febrile diseases. Traditional Chinese medicine believes that febrile diseases are caused by external pathogens entering the body, and it is advisable to disperse rather than nourish.
The above is an introduction to the dietary formulas and precautions for Rehmannia glutinosa. It has the effects of nourishing the five organs and supplementing blood. Rehmannia glutinosa can be made into a decoction to help with lower back and knee weakness and nocturnal emissions. It can also be used in Ba Zhen Tang (八珍汤) to help replenish qi and blood. Shou Wu (首乌) and Rehmannia porridge is very suitable for nourishing the body. There are many ways to consume Rehmannia glutinosa, and it has high dietary value. Everyone can consume it reasonably according to their physical condition to help nourish the body.
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