Sauerkraut should be stewed and cooked thoroughly before eating. Long-term gluttony of pickled cabbage with poor quality, poor food hygiene, mildew and short curing time may cause urinary calculi.
Extended data Eating pickled cabbage contaminated by miscellaneous bacteria, mildewed and containing too much nitrite due to short curing time will turn hemoglobin in the blood into methemoglobin with anaerobic function.
Red blood cells lose the ability to carry oxygen, leading to tissue hypoxia, resulting in symptoms of nitrite poisoning such as cyanosis of skin and lips, headache, dizziness, nausea and vomiting, palpitation and palpitation, and even death in severe cases.
Baidu encyclopedia-Chinese sauerkraut