How many oysters can you eat in a day?

How many oysters can you eat in a day

Being an oyster lover it has become a routine for me to include oyster dishes in my daily diet. Not only me, but there are also millions of foodies who enjoy oysters at any time of the day. But have you ever wondered about the number of oysters that you can eat in a day? Health concerns have often posed this query in my mind and I am pretty sure that there are many who have asked the same question.

When served as a main course, a person can consume 6 oysters, whereas, as an appetiser, 3 to 4 oysters will be enough for an average human being.

Oysters have been consumed in the cooked and raw form for a very long period of time. The edible part of the oyster can be found inside the shell and it is known as meat. It is important to get an idea about the nutritional content of oysters in order to understand how beneficial oysters are to our health.

Nutritional fact

Though less in calories, the oyster is a good source of proteins and nutrients which offer great benefits to health. According to USDAOpens in a new tab., 85 grams of oyster(without shell) contains

Calories69 g
Fat 2 g
Sodium90 g
Carbohydrates4.2 g
Protein 8 g

Are oysters good for your health?

There are different varieties of oysters available on the planet, out of which Eastern and pacific are the most chosen edible forms and they are highly favourable for health. Oysters not only filter the pollutants and enhance the quality of water, but their nutritional pack is also very much salutary and health-giving.

Oysters are an excellent source of

  • Vitamin C
  • Vitamin D
  • Vitamin B12
  • Selenium
  • Zinc
  • Iron
  • Magnesium
  • Potassium
  • Copper
  • Phosphorus

Now let’s have a look into the major health benefits of oysters

  • The omega 3 fatty acid content in oysters helps in the functioning of the heart and brain and it also prevents inflammation.
  • The presence of zinc in oysters helps to boost immunity.
  • The small amount of potassium contained in oysters helps in lowering blood pressure level.
  • The calcium and protein content in oysters gives strength to bone.
  • Oysters are highly helpful to manage body weight.
  • Oyster intake would prevent the iron deficiency and hence leaving no room for anaemia.

Is it good to eat raw oysters?

Even though many people find it really satiating to consume raw oysters, intake of uncooked oysters can cause serious issues to people who are already suffering from certain health conditions. Eating contaminated raw oysters can even cause death to people owing to the presence of the bacteria named Vibrio VulnificusOpens in a new tab. in it.

People with any of the health conditions mentioned below should only eat oysters, which are thoroughly cooked.

  • HIV 
  • Liver dysfunction
  • Diabetes
  • Cancer
  • Digestive system related illnesses

We may not be able to recognise the presence of bacteria via the smell, taste or freshness of the oyster. The only way to get rid of bacteria in oysters is to heat them to prevent the attack of foodborne diseases. Those who are infected will have vomiting, diarrhoea and other mild or severe symptoms.

In addition, there is a chance for the presence of high amounts of lead, cadmium and mercury in the raw oysters. These metals could pose a threat to the immunity of children, pregnant ladies and breast feeding mothers. Hence, please make sure to consume well-cooked oysters to avoid fatality.

Are oysters good for losing weight?

As oysters are low in calories and contain lean proteins, they can definitely be included in the diet of those people who wish to melt off. 

Being an excellent source of protein and omega 3 fatty acid, it keeps you feeling full, thereby stopping you from eating further. Thus, it enables people to control overeating and may aid to maintain or lose weight. 

Researches prove that seafood is better than other high protein food items for those who are under a strict calorie diet, as they satiate their appetite at ease. 

Is it ok to eat too many oysters?

Consumption of too many oysters on a regular basis cannot be promoted as it can lead to health issues. It is true that oysters are composed of healthy minerals and vitamins. But the excess intake can cause harmful impacts.

One of the potential consequences of consuming oysters in excess is zinc toxicity. This happens due to the extreme intake of zinc along with oysters. This in turn causes a reduction in the level of minerals such as copper and iron in the body, as zinc makes use of them for absorption; ultimately leading to anaemia and impaired immune functions.


Being the healthiest seafood, oysters should also be included at least once or twice a week in our diet. Those who wish to dine out to have seafood dinner should order well-cooked oysters in order to enjoy a healthy and safe meal.


Hi, I am Hari, your healthy-eating coach. I can guide and help you to explore different tastes and food tips.

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