Choosing Protein Supplements: The Four Important Protein Sources
Filed Under (Protein) by Henrick Scofers on 05-07-2009
Tagged Under : Bodybuilding, bodybuilding supplements, exercise, Fitness, health, lifestyle, muscle-supplements, natural health supplements, Nutrition, Protein, sports nutrition, Supplements, weight loss, weightlifting
Protein is one of the essential nutrients our bodies need. Our muscles especially require protein for maintenance and growth. For most people, around .3 grams per pound of body weight is the recommended daily intake of protein. However, athletes in general and bodybuilders in particular need far more protein ” around 1.25 grams per pound each day. These people need more protein to build muscle and fuel their bodies for their exercise regimens.
The total amount of protein intake is important, but equally important are the sources of dietary protein. Most people are able to get enough protein from their diet; but many athletes require protein supplements to meet their daily requirements for this nutrient. Protein supplements are usually made from four different sources. Each of these protein sources is different and athletes should choose according to their needs.
These four sources used in most protein supplements are egg, whey, soy and casein. There are protein supplements which use only one type, but it is more common to have two of these proteins in a single supplement.
Whey protein is derived from milk and is the protein source used in the majority of protein supplements. Whey protein contains both essential and nonessential amino acids. The essential amino acids are those which must be obtained through the diet since our bodies cannot produce them ” and as you may have guessed, nonessential amino acids are those which we can produce, but may want more of through dietary sources. Whey protein is easily digested and used by the human body, the exception being those who have allergies to milk, who should avoid concentrated whey protein. As it happens, the concentrated form is preferred for protein supplements, being inexpensive to produce and containing between 30% and 85% protein by weight. There are also whey protein isolates, with a protein content of around 90%, which are more expensive. Whey protein is not only an excellent protein source, but also boosts immune function, contains amino acids and is helpful in speeding along muscle recovery after a workout.
Soy protein comes from soy flour. It is the most complete vegetable protein. It comes in concentrate and isolate and like whey, the isolate form is higher in protein content and more expensive. Soy protein is easy to digest and the perfect option for people who have milk allergies or are lactose intolerant. However, people with soy allergies can not tolerate soy protein. Soy protein can be added easily to food to increase the nutritional value and can help to lower cholesterol.
Egg protein is often mentioned as being the best protein supplements. This protein comes from egg whites and is quickly and completely digestible. Containing all of the essential amino acids, it’s also a popular ingredient in protein supplements. However, there are those who are allergic to eggs and should not use protein supplements containing egg protein.
Casein protein comes from milk, but unlike whey it is slow to digest. It is slow acting and therefore often used in combination with faster acting proteins. It works well meals prior to workouts. It also is a great choice to take just before bed.
When you’re shopping for protein supplements, always read the label to make sure that the protein sources used are suitable for your needs and that you can safely ingest. Protein supplements can be a great thing ” but make sure you choose well.
