 The iron, the zinc, the B vitamins, that high quality protein support healthy growth and development. That's why we see it being so important for pregnant women. That's why we see it so important in those early years of life when infants are starting to include complementary foods. She tells Brownfields Research is now focusing on those teenage years. It's not only that their diets are really poor, they're getting more and more independent about the choices that they're making.