With only
90 calories, a dozen oysters brings to the body
16 g proteins (as much as 100 g steak, as much calcium as a glass of milk) and a delicious mixture of vitamins:
A, B1,B2, B6, B12, PP ,
not to mention the essential trace-elements :
iron, copper, zinc,
magnesium, manganese,
phosphor and potassium.