Vegetables are rich in vitamins, minerals, and dietary fiber. Eating an appropriate amount of vegetables can promote intestinal peristalsis, facilitate bowel movements, provide the body with essential micronutrients, exert antioxidant effects, and ensure the normal function of various organs. However, excessive intake of vegetables can lead to the following hazards:
Certain vegetables contain high levels of oxalic acid, which can easily form stones. Vegetables like spinach, celery, and tomatoes contain a significant amount of oxalic acid. When it combines with calcium from other foods, it can easily form calcium oxalate stones, which is one of the reasons why many women who prefer vegetarian diets are prone to developing stone-related diseases.
It can exacerbate existing stone conditions. Most vegetables are alkaline foods. For patients already suffering from calcium phosphate stones, consuming large amounts of alkaline food daily can increase the number of stones and make them more difficult to expel from the body.
They are difficult to digest. Vegetables high in crude fiber, such as celery and spring bamboo shoots, are hard to digest when consumed in large quantities and are not recommended for individuals with gastrointestinal diseases. Crude fiber can also easily cause gastric bleeding or esophageal variceal bleeding in patients with cirrhosis, worsening their condition.
They affect the absorption of calcium and zinc. For pregnant women and children and adolescents in their growth and development stages, consuming large amounts of vegetables can hinder the body's absorption of calcium and zinc, affecting a child's intellectual development and bone growth.
If large quantities of vegetables are consumed for "dieting" or "satiety," while reducing or completely avoiding meat and fish, it not only affects the body's intake and absorption of essential fatty acids and high-quality proteins, leading to protein malnutrition, but also hinders the absorption of rich nutrients such as calcium, iron, and zinc from non-vegetarian foods. Women should be particularly careful to avoid iron-deficiency anemia and calcium deficiency caused by excessive vegetarianism.