The human body is a delicate combination of different substances, and its normal functioning depends on the balance of these substances. An excess or deficiency of any substance can lead to disorders in this organism. Since all human nutrition comes from food, and some toxic substances can also be ingested unknowingly, here are a few foods that are best consumed in moderation.
1. Preserved Eggs
Some producers add heavy metals like lead and copper to the soaking solution to increase the stability of preserved eggs. However, excessive use of lead or copper during the production process can lead to heavy metal residues in the eggs, affecting consumers' health. Lead can damage the nervous, hematopoietic, and digestive systems, and it has a serious impact on children's physical development and intellectual growth.
Preserved egg and lean pork porridge is popular among the elderly for its thick texture, smooth mouthfeel, and easy digestibility, but the elderly should not eat it frequently.
Beware of preserved egg poisoning: The bacteria that contaminate preserved eggs are mainly Salmonella. After entering the human body with the egg, it causes inflammation on the intestinal membrane. When the bacteria lyse, they produce a highly toxic endotoxin, leading to poisoning symptoms in the body.
2. Stinky Tofu
During the fermentation process, stinky tofu is highly susceptible to microbial contamination and also releases large amounts of basic nitrogen and hydrogen sulfide. These are putrefactive substances from protein decomposition and are harmful to the human body.
3. MSG
The scientific name of MSG is sodium glutamate, and its main component is glutamate. Consuming it in moderation is not harmful. However, some research reports have indicated that excessive consumption of MSG may cause symptoms such as dryness, numbness, or tingling in the mouth and tongue, headache, nausea, rapid heartbeat, and a hot, numb sensation in the neck. It may also inhibit bone growth and affect development.
4. Instant Noodles
Instant noodles contain harmful artificial colors and preservatives, and frequent consumption can affect health. Artificial synthetic colors are mainly made from aniline dyes separated from coal tar. The hazards of synthetic colors to the human body include general toxicity, laxative effects, mutagenicity (gene mutation), and carcinogenicity. Most preservatives currently used are artificially synthesized, and exceeding standard usage can cause certain harm to the human body.
5. Pickled Vegetables
If pickled vegetables are not prepared correctly, they can contain hidden carcinogens such as nitrosamines. When these substances frequently come into contact with the gastric mucosa, they can affect its integrity.
6. Fried Dough Sticks
The alum in fried dough sticks is an aluminum-containing inorganic substance. If consumed frequently, it is difficult for the kidneys to excrete it, which in turn can be toxic to the brain and nerve cells, and may even lead to senile dementia.