Why do I need zinc?
You need this trace mineral required for many essential functions, including growth, appetite regulation, digestion, protein synthesis, wound healing, and the maintenance of collagen and elastin. It may also help prevent stretch marks --one of the banes of pregnancy.

Zinc aids calcium in building strong bones, and is essential for forming healthy sperm and eggs in adults. In pregnant women, severe deficiencies may cause miscarriage, pregnancy-related toxemia, extended pregnancy, and prolonged labor.

How much do I need?

The RDA (recommended daily allowance) is 15 mg. The requirement jumps by a quarter to 20 mg daily if you're pregnant, and another 5 mg if you're nursing.

Should I take a supplement?
There aren't many foods rich in zinc--unless you like oysters. Fortunately, your prenatal vitamin supplement should provide the zinc you need.

What are the best food sources?

 6 medium oysters: 76.3 mg

 3 oz. beef blade roast: 8.7 mg

 3 oz. veal liver: 8.1 mg

 3 oz. lamb foreshank: 7.4 mg

 3 oz. Alaskan king crab: 6.5 mg

 3 oz. braised beef liver: 5.2 mg

 1/3 cup toasted wheat germ: 4.7 mg

 1/2 cup miso: 4.6 mg

 3 oz. ground beef: 4.6 mg

What are signs of a deficiency?
Rough, dry skin and a loss of appetite are the most common problems.