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How many days can oysters be kept unopened?
Oysters without shells can be kept for 1-2 weeks.

In general, oysters can't get enough nutrition, and they can only survive for about 1-2 weeks at most. Adsorbed on rocks or ship bottoms, it can lurk in shallow sea rocks or buoys and other attachments, feeding on diatoms, bacteria and micro plankton, and growing rapidly in seawater.

Taboos for eating oysters:

1. Oysters are rich in nutrition, but they can't be matched with beer, because if you add a glass of beer after eating oysters, you are prone to physical discomfort such as indigestion and diarrhea.

People with skin diseases should not eat oysters, because oysters are seafood and hair, which will irritate the skin and aggravate skin diseases.

3. Pregnant women should not eat oysters, because pregnant women's physique is different from that of ordinary people, and pregnant women's physique may be cold, which happens to be cold food. If pregnant women eat too much, it may lead to palace cold, bleeding and even abortion.

4. People who often have loose bowels should also eat less oysters, because oysters are high-protein foods, and people who often have loose bowels have a weak digestive system and cannot absorb protein in oysters, which will aggravate the degree of diarrhea.

I hope the above information about the taboo of oysters will help you.