Inevitably there is a myth that soy protein is horrible for bodybuilding and that if a neighborhood where you work seriously at building muscle or stay away from it. In fact, some sites are "studies" that soy protein and soy products can be harmful to your health. And if it is true that the initial allegations of soy wonders might not be entirely correct, there is the myth that soy protein is bad.First off, there is a concept called the biological value scale developed for quality measurement of specific proteins. The charges basically how efficient your body will use a protein source. The higher the BV (biological value), the more amino acids and nitrogen in the maintenance of your body the nutrients it consumes. In short, is a potential way of muscle growth and quality measurement strength.There time that proteins were in the top of the BV with a score of about 100. Since then, whey proteins toped the scales around 106-159 BV. This means that whey protein is used to improve muscle quality growth.But first a warning! This does not mean that everything would use whey protein is, for all your needs. Many times builders used a variety of proteins, depending on the BV and the time of day and only a workout.Let me explain your protein needs are different in the morning to midday and after a number of different training again before bed.All this means is that no protein is best for a given time. But before I get lost … I leave the biological value scale in a simple form.Type Protein:: Biological value RatingWhey: 106-159 Egg: 100 Cow's Milk: 91 Fish: 83 casein: 80 Beef: 80 Chicken: 79 soybean : 74 Wheat Gluten: 54 Beans: 49For all these reasons, can and must see that soy protein is listed below. That simply means that it is the most anabolic of proteins for optimal muscle growth.But not get me wrong … This does not mean you should not eat soy protein if you like. It simply means that subject to religious beliefs or personal preferences, soy would not be the ideal protein source for enhanced muscle growth. This does not mean you can not have or that the fact you.In bad, let's continue with some example.John P. Public 13% body fat 184 pounds 160 pounds of lean body mass (LBM) For simplicity, we'll just say that for every pound of lean mass (lean body mass pounds) 1 g protein.John John wants to consume 160 g of protein day. This is where the myth and some problems in the game! Read carefully.If obtain a large amount of protein from less BV sources then optimal (beans, soy) can not prime your muscles for optimal anabolic growth. John can not always be 150 grams of soy protein per day, if you want to build muscle mass and most have no personal reasons for not using a better quality sources.John not in danger of loss of muscle or excessive efforts to taking small amounts of soy proteins, because he wants. After the soybean is not a myth difference.The to make soy will cause men to produce estrogen when large quantities. Far beyond what any rational person would do in a time that has basis.A bodybuilder soy will not feel the discrepancies in less than an anabolic one person does not consume soy all.Fact: a long-term metabolic balance in men young people about the nutritional value of an isolated soy protein and protein from beef (VR Young, Waylen A, Garza C, Steinke FH, Murray E, Rand WM, and NS Scrimshaw) was published in 1984 by the American Journal of Clinical Nutrition. Am J Clinical Nutrition, January 1984, 39: 8 – 84 days 15.After two groups, one totally isolated soy protein and other meat proteins, was the conclusion: "body cell mass measurements showed no impairment on the nutritional status of the protein. The observations confirm the prediction, derived from previous short-term balance studies of nitrogen, the nutrient value of soy protein isolate is high and that these plant proteins can serve as the sole source of essential amino acids and nitrogen for protein maintenance in adults. "So, to summarize and review … Soy is not the most biologically available source for optimal anabolic muscle growth. If you were to undergo training, you would like to take some high quality whey protein vs. soy protein in soybeans but only mean it's not bad for bodybuilding, unless a majority of the protein content of