Many people have heard that when eating shrimp, they cannot eat fruits, and when they eat seafood, they cannot eat vitamin C tablets. Although the reasons are unclear, everyone has heard a serious warning: This will be poisoned!
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 have eaten seafood, eat fruit, and have no poison! This is why?
In fact, there are four preconditions for violating taboos to cause serious harm:
First, aquatic products do indeed come from an arsenic-contaminated environment. In addition to shrimp, crayfish, oysters, oysters, oysters, crabs, etc., various aquatic products are contaminated and arsenic is at risk of contamination. If aquatic products come from contaminated waters, they will not contain large amounts of arsenic and there will be no such contraindications.
Second, the amount of ingested contaminated seafood is indeed more, and the total amount of arsenic contained therein has reached 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 a half of the vitamin C is contained in half an apple and a few bananas, it 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 what kind of pollution the aquatic product is in the end, how much seafood is eaten, and what vitamin C is there.
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 one tenth 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. , as well as a variety of other chemical pollutants. I really don't know why there are so many diners who come to succession and relish to taste such foods at high prices. They are just satisfied with the safety of being “not hospitalized immediately after arsenic poisoning!â€
- No one can say that environmental protection has nothing to do with itself. Where can the food ingredients on the table come from? Environmental pollution, everyone suffers!
Expert advice - how to eat seafood is safe
I personally recommend that if the quality of the product's environment can not be very reassuring, 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. Eating vitamin C tablets after eating these foods is still a bottom line security advice.
In addition, it should be noted that fresh seafood is mostly cold and people with weak stomachs need to eat less. After eating a large amount of aquatic products, eating a large number of cold fruits again will, for some people, cause diarrhea and abdominal pain. This has nothing to do with arsenic pollution.