Myth: Soy protein does not make much of a difference in lowering cholesterol.
Not true! Soy protein can help meet protein needs and the FDA authorized health claim for soy protein states that “25 grams of soy protein a day, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease.” It may help reduce the risk of coronary heart disease (CHD) by lowering low-density lipoprotein cholesterol (LDLC) and perhaps also by lowering blood pressure. Isoflavones may also directly improve arterial health.
Recent evidence provides support for the FDA soy and heart health claim showing around a 5% reduction in LDLC. Evidence suggests that every 1% reduction in LDLC leads to a 1% to 3% reduction in CHD risk, so this is great news for those looking to improve heart health. Other recent research suggests that isoflavone-rich soy protein inhibits the progression of subclinical atherosclerosis in young postmenopausal women.
(Information from soynutrition.com) For more information, click here.
Food labeling: health claims; soy protein and coronary heart disease. Food and Drug Administration, HHS. Final rule. Red Regist 1999; 64:57700-33.
Messina M, Messina V, Jenkins DJ. Can breast cancer patients use soyafoods to help reduce risk of CHD? Br J Nutr 2012;108:810-19
Hodis HN, Mack WJ, Kono N, et al. Isoflavone soy protein supplementation and atherosclerosis progression in healthy postmenopausal women: a randomized controlled trial. Stroke 2011;42:3168-75