Protein is an essential nutrient for the body, especially for the muscles. The general recommendation is an intake of around .3 grams of protein for each pound a person weighs. For athletes and bodybuilders, though, the requirement is higher because the body is working harder and demands more. The recommendation jumps from .3 to 1.25 grams for this group of people.
Not only is the amount of protein important, but the source also matters. For the average person, diet alone is sufficient to get the needed amount, but for those who need more than the average amount, there are protein supplements that are necessary. There are 4 different types of protein that can be used. Each reacts differently and so the type should be chosen carefully.
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 comes from milk and is the most common of these four sources used to produce protein supplements. This protein contains essential amino acids (those which we cannot produce ourselves and must take in through dietary sources) and nonessential amino acids. Except for people who are allergic to milk or have lactose intolerance (who should avoid whey protein), this is a great source of protein which is readily digested. Concentrated whey contains 30%-85% protein and is inexpensive, making it a common ingredient in protein supplements. Whey protein isolates contain around 90% protein by weight, but are far more costly. Whey protein helps improve immune function and speeds muscle recovery in addition to being a good source.
Soy protein comes from soy flour. It is the most complete vegetable protein. It comes in concentrate, 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 this type of protein. Soy protein can be added easily to food to increase the nutritional value and can help to lower cholesterol.
Egg protein comes from egg whites. It is fat free and very high in protein. It contains all the essential amino acids and is completely absorbed by the body. It is considered the best protein source. It should not be used by people who have egg allergies.
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.
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