Ask the doctor: How does protein in grams translate to portion size in ounces?

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Q. You advise women to eat 46 grams of protein daily, but I don't know what that translates to in ounces.

A. It's easy to understand how that recommendation could be confusing. Although a 3.5-ounce serving of meat is equivalent to 100 grams, it won't contain 100 grams of protein. That's because most protein-containing foods have other nutritional elements in them, primarily fat and water, which account for additional weight. For example, in a 3.5-ounce serving, turkey breast has 30 grams of protein; pork loin, 25 grams; lean beef, 36 grams; tuna or salmon, 26 grams. And of course, the leaner the cut of any meat, the more protein and less fat you'll get in your portion.

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