5. Selenium, zinc, and iodine: Support the endocrine system and fetal growth and development.
The micronutrients are needed in only small amounts. Iron: Iron–rich foods improve your blood volume and prevent anemia. Sodium and potassium: Essential electrolytes needed for the general functioning of the body and maintaining blood and fluid volumes
6. Vitamin D:
Works with calcium in strengthening the bones. However, vitamin D is mostly made by the body with the use of sunlight and does not require any external food sources.
Folate: Folate intake before or during pregnancy may reduce the risk of gestational diabetes.
The nutrients available in oysters are present in other food sources as well. You do not have to eat oysters for their health benefits if you are getting the daily recommended allowance of these nutrients from other food sources.