A nurse is reinforcing dietary teaching with a client about complete protein in the diet. Which of the following foods should the nurse recommend as a source of complete protein?

Choice A reason: Dried black beans provide about 15 grams of protein per cup but are incomplete, lacking sufficient methionine. Older adults need complete proteins (0.8-1.0 grams/kg daily) to combat sarcopenia, making beans less effective unless paired with complementary foods like grains for a complete amino acid profile.

Choice B reason: Nuts, such as almonds, offer about 7 grams of protein per ounce but are incomplete, deficient in lysine. For older adults, who require high-quality protein to maintain muscle mass, nuts are less optimal as a standalone source compared to complete proteins like yogurt.

Choice C reason: Fresh vegetables like broccoli provide 2-5 grams of protein per cup, insufficient for older adults’ needs (0.8-1.0 grams/kg daily). They lack essential amino acids, making them incomplete and unsuitable as a primary protein source for preventing muscle loss in aging populations.

Choice D reason: Yogurt is a complete protein, providing about 8-10 grams per cup with all essential amino acids. For older adults, it supports muscle maintenance and immune function, countering sarcopenia. Its digestibility and calcium content also benefit bone health, making it an ideal choice.

Choice A reason: Chicken stir fry provides about 26 grams of protein per 3-ounce chicken serving, with peppers and carrots adding negligible protein (<2 grams). The high protein content from complete amino acids in chicken supports muscle repair, making this the highest protein meal among the options.

Choice B reason: Bread-stuffed turkey breast with baked potato offers about 26 grams of protein from turkey (3 ounces), with potato and bread adding ~5 grams. While high, it provides slightly less protein than chicken stir fry due to lower protein density in accompanying foods.

Choice C reason: An egg omelet (2 eggs: ~12 grams), cheese (1 ounce: ~7 grams), toast (~3 grams), and milk (1 cup: ~8 grams) total about 30 grams of protein. This is substantial but less than chicken stir fry, as eggs and dairy have lower protein density per serving.

Choice D reason: A bean burrito with corn and tomato salad provides about 15 grams of protein from beans (1 cup), with corn and tomatoes adding <2 grams. Beans are incomplete proteins, and the total protein is lower than chicken-based meals, making this the least protein-rich option.