It is appropriate to eat 100-150 grams of oysters per day, which is about two.

Oysters contain a variety of vitamins and minerals, of which the zinc content is particularly prominent, every 100 grams of oysters containing zinc up to 71.2 mg. Zinc is an essential trace element, constituting a variety of enzymes and metalloproteins in the body, involved in a series of important physiological processes, especially for male sexual function and the role of children's growth and development is crucial. Two oyster meat intake of zinc is far more than the human body needs a day, so do not eat too many oysters.

Expanded information:

Many people love to eat raw, that is the best way to taste the freshness of the oysters. But the oyster is a filter-feeding shellfish, easy to enrich the body of pathogenic microorganisms, especially the norovirus and parahaemolytic vibrio, etc., every year there are a lot of eating oysters caused by food poisoning events. Therefore, the taste is valuable, health price is higher, if the quality of the oyster is not sure, should avoid eating raw oysters, steaming also need to be heated in place.

By the impact of marine environmental pollution, many seafood face heavy metals and other pollutants exceeding the standard problem. Oysters are grown in polluted waters, the body may contain more heavy metals, occasionally taste a fresh craving can be, should not be eaten every day.

Reference:

People's Daily Online - How to eat the safest oysters?