Soy Protein has recently shown up in heart-healthy flatbreads. Introduced this past January by Tumaro's Gourmet Tortillas, Los Angeles, Calif., Soy-full Heart flatbreads have 4g of fiber, 6 g of protein, and, thanks to the flax flavor, have 420mg of omega-3s. The products incorporate Solae® brand soy protein from the Solae Co., St. Louis, Mo. Recent studies highlight soy protein's effect on both cholesterol and blood pressure.

McVeigh et al. (2006) looked at the effects of soy protein varying in isoflavone content on serum lipids in 35 healthy young men. The men consumed milk protein isolate (MPI), low-isoflavone soy protein isolate (low-iso SPI), and high-isoflavone SPI (high-iso SPI). The ratios of total HDL cholesterol, and apo B o apo A-I were significantly lower with both SPI treatments than with the MPI treatment. The researchers concluded that soy protein, regardless of isoflavone content, modulates serum lipid ratios in a direction beneficial for cardiovascular disease risk in healthy young men.