Many people know that when you eat shrimp, you cannot eat fruits, and when you eat seafood, you cannot eat vitamin C tablets. The theory is that seafood is often contaminated and some arsenic is enriched. Originally, pentavalent arsenic was less toxic, but if it was reduced to trivalent arsenic by a reducing agent such as vitamin C, it was arsenic trioxide (arsenic trioxide). The toxicity increased rapidly and there was a risk of poisoning.
However, there are many people who argued at the same time with suspicion: After the banquet is over, they must be fruitful! I ate seafood and eat fruit. I was not poisoned. Why is this?
It turns out that violating taboos has serious consequences and requires four prerequisites:
First, aquatic products do come from an arsenic-contaminated environment. In addition to shrimp, there are crayfish, river oysters, oysters, various oysters, crabs, etc., and various aquatic products have the danger of being contaminated and enriched with arsenic. If aquatic products come from contaminated waters, they will not contain large amounts of arsenic, and there is no such contraindication.
Second, the amount of ingested contaminated seafood is relatively large, and the total amount of arsenic contained in it reaches a value sufficient to cause poisoning. If Lin Yuyu likes to eat crabs, he will try his best and eat a small amount of food. Naturally, he will not see obvious hazards.
Third, the amount of vitamin C and other reducing substances in fruits is high enough to eat enough. If only half an apple, a few slices of bananas, then a little bit of vitamin C is not enough to restore a large amount of trivalent arsenic. In contrast, the content of vitamin C tablets is much higher, so the risk is even greater.
Fourth, vitamin C pills are taken shortly before and after eating seafood. If you eat pills at breakfast and eat shrimp at night, most of the vitamin C in your body is already metabolized, and the risk will be less.
In short, the danger of seafood and vitamin C being eaten together is a matter of quantity. It depends on the amount of fishery pollution, the amount of seafood, and the amount of vitamin C intake.
The LD50 of arsenic is less than 15 mg/kg. It is generally believed that 100 to 200 mg of arsenic is fatal. However, the arsenic content standard for fish in China is 0.1 mg/kg, that is, if you eat a qualified fishery, even if you eat 10 kg, there will be no acute poisoning. The frequent incidents of arsenic poisoning caused by seafood can only prove that the seafood on the table has been seriously polluted, which is several hundred times more than the national standard!
On the other hand, if you do not eat with vitamin C, are seafood and fresh seafood safe enough?
The answer is obviously negative. To the level where arsenic content may be dangerous, this food is no longer suitable for humans. The pentavalent arsenic itself is toxic, but its toxicity is less than 1/10 of arsenic. Chronic arsenic poisoning may cause a variety of cancers and damage organs. Its harm can not be ignored; and these polluted aquatic products are likely to contain other pollutants from sewage, such as mercury, cadmium, lead, organic chlorine, PCBs. And a variety of other chemical pollutants. (xiaoxiao)
- Expert advice
If the quality of the product's environment can not be assured, eat seafood, fresh and not more than a day, the number should not exceed 100 grams. Fibers in vegetables and whole grains can promote the discharge of heavy metals and are therefore suitable for consumption. Do not eat vitamin C tablets after eating these foods.
The seafood river is mostly cold and people with weak stomachs must eat less. After eating a large amount of aquatic products, eating a large number of cold fruits again, for some people, it is easy to cause diarrhea abdominal pain, but this has nothing to do with arsenic pollution.
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