Tofu is one of the most common and popular cooking ingredients, made from raw materials like soybeans, green beans, and black beans, and processed through a series of procedures including soaking, grinding, filtering, boiling, adding a coagulant, solidifying, and shaping.
The protein content of tofu and tofu products is higher than that of soybeans. Moreover, tofu protein is a complete protein, not only containing the eight essential amino acids required by the human body, but also in a proportion that closely matches the body's needs, giving it a high nutritional value. Tofu also contains fats, carbohydrates, vitamins, and minerals. According to traditional Chinese medicine theory, tofu is sweet in taste and cool in nature, and it affects the spleen, stomach, and large intestine meridians. It has the effects of replenishing qi, harmonizing the middle jiao, promoting the production of body fluids, moistening dryness, clearing heat, and detoxifying. It can be used to treat conditions such as red eyes, thirst, and to counteract the toxicity of sulfur and liquor. However, although tofu is good, eating too much of it has drawbacks, and excessive consumption can be harmful to health.
What other things should be eaten with caution? Please see Diet Therapy and Nutrition for Question 1: Causes indigestion
Tofu contains extremely high amounts of protein. Consuming too much at once not only hinders the body's absorption of iron but can also easily lead to protein indigestion, causing discomfort symptoms such as bloating and diarrhea.
Question 2: Promotes kidney function decline
Under normal circumstances, the plant protein a person ingests undergoes metabolic changes, and most of it eventually becomes nitrogenous waste, which is excreted by the kidneys. As people age, the kidneys' ability to excrete waste decreases. At this time, if one is not careful with their diet and consumes large amounts of tofu, taking in excessive plant protein will inevitably increase the amount of nitrogenous waste produced in the body,加重 the burden on the kidneys, further decline kidney function, and be detrimental to health.
Question 3: Promotes atherosclerosis
American medical experts point out that soy products contain extremely high levels of methionine, which can be converted into cysteine under the action of enzymes. Cysteine can damage the endothelial cells of the arterial wall, making it easy for cholesterol and triglycerides to deposit on the arterial wall, thereby promoting the formation of atherosclerosis.
Question 4: Leads to iodine deficiency
The soybeans used to make tofu contain a substance called saponin, which not only helps prevent atherosclerosis but also promotes the excretion of iodine in the human body. Long-term excessive consumption of tofu can easily lead to iodine deficiency, causing iodine deficiency disorders.
Question 5: Triggers gout attacks
Tofu contains a relatively high amount of purines. Gout patients with abnormal purine metabolism and patients with elevated blood uric acid levels are prone to gout attacks if they consume too much of it. Gout patients, in particular, should eat it in moderation.
Thus, while tofu is good, it should not be eaten every day, and consumption should not be excessive in a single sitting. The elderly and patients with kidney disease, iron-deficiency anemia, gout, and atherosclerosis should especially control their intake. From a Traditional Chinese Medicine perspective, tofu is considered to have a cold nature. Therefore, people with a cold stomach, those who are prone to diarrhea, bloating, or a weak spleen, as well as those with kidney deficiency who often experience nocturnal emissions, should also avoid eating too much of it.