Protein is a nutrient which is essential to the body, particularly for the muscle tissues. Nutritionists recommend a daily intake of about .3 grams for every pound of body weight. Bodybuilders and other athletes, however, require more protein in their diets to encourage muscle growth and to nourish their bodies to handle the demands of their workouts. These people should get about 1.25 grams/day for each pound of body weight.

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 is derived from milk and is the 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 is derived from soy flour. This is the most complete vegetable protein known and like whey protein, there are isolates and concentrated forms available; isolates are higher in protein but more expensive. Easily digestible, soy protein is suitable for everyone except for the small number of people who are allergic to soy. Soy protein can be added to foods easily and is beneficial in lowering blood 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.

Choosing the right protein is about choosing what your body will tolerate the best and what protein will work for your exercise habits the best. You should consider all pros and cons of each type before you make your final decision about protein supplements.

Tags: Nutrition

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