Soy is a major protein source consumed by vegetarians and those who are lactose intolerant. Did you know that many pet foods are also dependent upon soy as a protein source? (Just do a search on these HubPages!). This article explores what is soy and is it good for us?

What is Soy Protein?

Soy protein is derived from soy flour. A staple nutritional item in the Asian diet, it has gained widespread recognition for reducing the risk of coronary artery disease and for its antioxidant properties. Some studies have also demonstrated soy's ability to reduce the risk of breast and prostate cancer.

Out of all the vegetable proteins, soy has the highest quality protein comparable to whey protein. As a protein source, soy consumption is ideal if you are vegetarian or you are lactose intolerant. Just like whey protein there are two types of soy protein: concentrate and isolate.

Soy protein concentrate is what is essentially left at the completion of the de-fatting process of soy and contains at least 65% protein. You will often find soy protein concentrates in the ingredient list on baked foods, cereals and even some meat products to increase the nutritional value of protein.

Soy protein isolate is the most pure and refined soy available. Soy isolates are made from the de-fatted beans, but with most of the other ingredients removed such as the fats and carbohydrates. This leaves almost a pure protein source (at least 90%). Because of this, it has a neutral "less beany" flavor and will cause less flatulence. This supplement is harder to find and more expensive to buy than the concentrate.

Benefits

• helps combat free radical formation during exercise, which may help speed muscle recovery after exercise
• is generally very low in or free of fat, cholesterol, and lactose

• whey protein digests more quickly, while soy protein digests more gradually. Together, they may provide a more prolonged, deliberate release of amino acids to key muscle groups

• prevents bone loss especially in post menopausal women
• other nutritional functions include providing a respectable amount of potassium, zinc, iron, vitamin-E, phosphorous as well as the full B-complex

There has been controversy regarding the stated benefits of soy. Recent research states that soy has a small influence on lowering cholesterol and minimizing the common symptoms experienced by post menopausal women. Despite these claims, it is still recommended to increase your consumption of soy for its many other health benefits. A very good source of protein and its impact on muscle development and recovery makes soy an excellent alternative for those who are unable to consume dairy or meat in their diets. It is recommended to consume soy products in their natural form rather than as a supplement (soy isoflavones) to reap its benefits.