Can CKD patients consume soy protein?

It is found that many patients have been particularly concerned about their diet since they were diagnosed with chronic kidney disease. Which ones can be eaten? What can’t be eaten? You have to ask to be clear, and even want the doctor to make a recipe to eat.

It is true that for patients with kidney disease, daily diet is very important. A reasonable diet can not only supplement the nutrients the body needs, but also protect the kidneys and delay the progression of kidney disease. Unreasonable diet may increase the burden on the kidneys and promote the progression of the disease. For patients with chronic kidney disease, doctors usually recommend moderate intake of high-quality protein (a high-quality low-protein diet).

Someone will definitely ask what is high-quality protein? Generally speaking, high-quality protein is animal protein, such as fish, chicken, eggs, dairy products, etc., and its bioavailability is high (it can not only supplement the human body’s nutritional needs, but also does not produce a lot of metabolic waste). As a plant protein, soy protein contains more non-essential amino acids and has low bioavailability. It is considered that it will increase the metabolic burden of the kidneys. Therefore, many doctors have not recommended that patients with kidney disease take soy protein.

However, in recent years, a large number of animal experiments and clinical experiments at home and abroad have shown that soy protein diet can protect kidney function and delay the progression of the disease. Many clinicians classify soy protein as a high-quality protein and recommend that patients consume it in moderation.

So soy protein was not recommended for patients with kidney disease in the past, so why does it have the effect of protecting kidney function? The following we will take everyone to learn about the latest research.

Soy protein component Soy refers to soybeans, green beans and black beans. Soy protein occupies the main part of soybeans and is a high-quality protein. Among all plant proteins, soy protein is the only complete protein similar to animal protein. Soy protein is rich in amino acids, including 9 essential amino acids needed by the human body, with a bioavailability of 65% to 96%, and a digestion and absorption rate of 84% to 98%. Animal experiments and clinical experiments show that soy protein can slow down the decline in glomerular filtration rate (GFR), and can effectively reduce urine protein in patients with kidney disease, and has a certain protective effect on kidney function. Soy protein can lower blood pressure and improve dyslipidemia caused by kidney disease.
Compared with animal protein, soy protein is rich in unsaturated fatty acids, which protects the kidneys and can effectively prevent atherosclerosis. A number of studies have proved that after using a soy protein diet, blood lipids will be reduced and the progression of kidney function will alleviate. It is suggested that the improvement of blood lipids can delay renal failure. In addition, other active substances in soybeans are also beneficial to health.

Soy isoflavones: isoflavones in the flavonoid structure, which have a similar chemical structure to estrogen, so they are called phytoestrogens. Studies have shown that women’s daily consumption of soy protein containing 70 mg of isoflavones has a good balance of high-density lipoprotein (HDL), and has an antioxidant effect, and protects against cerebral ischemia damage through this effect.

Soy Saponin: It has a variety of pharmacological activities in anti-cancer, prevention and treatment of cardiovascular diseases, anti-virus and liver protection, and has minimal toxic and side effects.

Soybean phospholipid: It has the effect of improving the vitality of brain nerve cells, increasing memory and anti-aging. Soy dietary fiber: Although it cannot be digested and absorbed by the human body, it plays an important role in the physiological regulation of the human body, such as improving gastrointestinal function, preventing arteriosclerosis, coronary heart disease, diabetes, etc.

It seems that soy has a lot of benefits, and CKD patients can also consume soy protein in moderation without having to worry about it. However, the intake of soy protein is also limited. It is recommended that patients with kidney disease should have a light diet, low salt and oil, eat small and frequent meals, not be greedy and excessive.