How to eat healthy food during pregnancy? Healthy diet is the one which contains all of the essential nutrients inside. What you eat and what you drink will affect the health of the child ultimately. The disabilities develop at the time of birth will stay forever. The basic components of the pregnancy diet encircles: Lightly processed or whole foods like grains, fruits, vegetables, legumes, low fat dairy products and meat. Eggs must be taken during pregnancy as if a pregnant woman is taking one egg daily she is consuming ninety calories.