Whey protein is often used by bodybuilders to enhance muscle synthesis, but it can be a healthy addition to anyone's diet. Manufacturers market many different brands and flavors of whey protein powder. Whey protein isolate and whey protein concentrate may sound similar, but they differ in price and features.
Features
To make powdered whey protein, manufacturers take a derivative of milk leftover from the cheese-making process and filter and process it into a powder form. Available natural or in flavors like chocolate, berry and vanilla, whey protein may be added to smoothies, soups and baked goods to enhance their protein content. For quick consumption--whey protein may be mixed into fruit juice, milk or even water. Rich in naturally occurring branched-chain amino acids luecine, isoleucine and valine, whey protein helps stimulate muscle growth and repair. Whey protein can also help improve immunity and positively affects cardiovascular health.
Isolate
Whey protein isolate is a very pure form of whey protein, containing less than 1 percent lactose. Isolate contains anywhere from 90 to 98 percent protein in each scoop. Because isolate is highly filtered, it loses some of the immunity-boosting properties. The high filtering process also increases isolate's price tag.
Concentrate
Most whey supplements contain whey protein concentrate because it is easier and cheaper to produce. Concentrate retains more lactose per serving--about 4 percent at the very most--and more of the immunity enhancing effects of whey. The actual protein per serving can be considerably less than in isolate--ranging from 29 to 89 percent per serving.
Considerations
Whey protein--whether it be concentrate or isolate--will support muscle synthesis when combined with resistance exercise. Those with severe lactose intolerance should chose isolate because it is least likely to cause symptoms. If cost is an issue, choose a less-expensive brand offering whey protein concentrate. Some companies offer a mix of the two types of whey in the same product. The mixes help increase the overall protein content of the product, while maintaining a lower lactose level. Combining the two types also makes the product more affordable and provides you with more of the immune benefits.
Warning
When shopping for either isolate or concentrate, go for 100 percent whey protein whenever possible. Many companies combine whey protein in weight gain drinks which include extra carbohydrates and supplements. As supplements are not regulated by the Food and Drug Administration, it is wise to fully research them before including any in your diet. Some whey products also include artificial sweeteners and coloring agents, so scan your ingredient lists to be sure you know what you are getting.
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