The benefits of Whey Protein

This article was written by leading supplement providers Nutrition X. It explores how to assess a protein (what makes one better than another) and the benefits associated with whey protein supplementation.

When it comes to assessing value of a whey protein, there are two issues of consequence:-

1. How pure is the final product? Is it 80% pure or 90% pure? WPCs average around 80% purity while WPIs reach purity levels that are 90% or better. Consequently, WPCs are cheaper than WPIs, and the WPIs with higher levels of protein are more expensive than with lower amounts. The choice for athletes is a compromise between quality (i.e. concentration of protein per 100g) and price. So ‘you pays your money and you takes your choice!!’

2. To what extent have the constituents of the whey liquid/protein been compromised? Whey protein contains biologically active peptides, which have weight loss and muscle-building properties. These peptides are present in small amounts in pre-processed form and may be filtered out of the final product or damaged (denatured) by a high heat or an acidic filtering process. A denatured protein no longer displays any biological activity. What does this mean to the consumer? Even though ion-exchange whey protein is more expensive, the process preserves peptides.

Once the protein is filtered it is turned into powder form. This is typically done by spray drying whey protein. In spray drying, whey protein is sprayed using a special nozzle (atomizer) and is dried in the air using hot gases. This is a consistent way of turning whey protein into a powder.

Benefits Of Whey Protein

Whey proteins have potential benefits for a range of sport and health issues. A synopsis of some of these are summarised below:

Sports Nutrition

•The amino acid profile of whey protein is similar to that of skeletal muscle.

•Provides a high concentration of BCAAs to maintain and repair lean muscle tissue following exercise and to prevent muscle breakdown.

•Helps to maintain adequate stores of glutamine and aid decline in immune function.

•May increase glutathione levels to help improve body composition (sustain lean muscle), enhance exercise performance and help maintain immune health.

•Helps stimulate muscle protein synthesis after exercise too.

•Easily digested, high quality protein to provide additional energy.

•Provide BCAAs to help prevent fatigue during intense, longer duration sports events.

•Helps athletes maintain a positive nitrogen balance.

Immune Health

•Provides a high concentration of BCAAs to help manufacture glutamine to fuel the immune system.

•Helps enhance humoral (antibody) response to support immune health.

•Improves intestinal tract antibody responses.

•Excellent source of cysteine to enhance glutathione status and maintain and/or improve immune function and optimize immunity.

Weight Management

•Exhibits a greater satiety effect compared to soy protein isolate and egg protein.

•May help stimulate an appetite-suppressing.

•More effective than red meat in reducing weight gain and increasing insulin sensitivity.

•Rich source of BCAAs, including leucine, and bioactive components to help increase fat loss and promote lean muscle tissue as part of a diet and exercise program.

•Provides high quality protein for weight loss surgery patients, both pre-operation and post-operation.

Body Composition

•May improves muscle protein synthesis in individuals of all ages.

•The amino acid profile of whey protein is almost identical to that of skeletal muscle.

•High levels of the essential amino acids found in whey protein are most effective at stimulating protein synthesis.

•The BCAA leucine may promote more efficient recovery following exercise.

•Whey protein supplementation before exercise enables more effective fat utilization and preservation of muscle.

Gastrointestinal Health

•Provide a protective, anti-microbial effect against ulcers and other gastric mucosal injuries, i.e. H.pylori.

•Source of bioactive components with anti-microbial and anti-viral properties to promote intestinal health.

•Rapidly digested and efficiently absorbed to help stimulate protein synthesis versus casein.

•Helps improve weight gain and improve glutamine status during and after periods of illness.

•A high quality source of protein that is easily tolerated in individuals with lactose intolerance (WPI).

Disease Recovery

•Source of high biological value (HBV) protein and essential amino acids needed for cell growth and tissue formation.

•Gentle, high quality protein source to help improve the nutritional status of individuals in various disease states and post-surgery.

•May help increase intracellular glutathione levels and enhance immunity to promote healing and recovery following illness, surgery, etc.


Nutrition X and Whey Protein

Nutrition X products that contain protein employ a variety of types of whey. Table 2 illustrates the type of protein contained. Invariably the products include a mixture of concentrate and isolate to provide a ‘healthy’ mix of sufficient actual protein content and a good spectrum of essential amino acids (in addition to some added leucine and glutamine in selected products). In the case of whey isolate, the technique of cross-filtration has been employed.

Table 2. Types of Protein Found in Protein-Containing Nutrition X products.
Big WheyBig Whey Pro XPro X Slender ProSlender Pro Mass XMass X UltimateUltimate Amino ShotsAmino Protein Shots MRMMRM
Hydrolysate Yes Yes Yes Yes
Concentrate Yes Yes Yes Yes Yes Yes
Isolate Yes Yes Yes Yes Yes

Nutrition X are a leading supplier of performance nutrition products. They provide high quality, scientifically supported products to professionals and amateurs alike. Nutrition X pride themselves on great customer service and great value. For more information, visit


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