Protein is an important element form of every cell in the body, manufacture and maintains muscle tissue. Insufficient amount of protein may cause muscles degeneration or weakness of the body.

According to the Wikipedia, whey protein is a mixture of globular proteins isolated from whey. Whey is the liquid material created as a by-product of cheese production. Whey protein is a common dietary supplement and various health claims it is use as alternative medicine. The  solution contain 5% of lactose in water, with some minerals and lactalbumin. It is removed after cheese is processed. The fat is removed and then is processed for human foods. Processing can be done by simple drying, or the protein content can be increased by removing lipids and other non-protein materials.  

Whey protein is known to be a valuable supplement in muscle recovery--helping to heal muscles and prevent injury. It is also good for building muscle, muscle recovery, burning fat and it is even thought to help strengthen your immune system.

Whey is not only useful for helping you lose weight, but it can also help you repair, maintain and build lean muscle mass.

Why do our bodies need Whey Protein?

Our body has to work harder to process protein, which means that protein makes you burn more calories. By taking extra protein in the morning you are jump starting your body for an entire day of calorie burning. The extra protein in the morning can give you a great energy boost and will also keep you feeling full until lunch; helping you to avoid the ever present temptation of fast food breakfast sandwiches and doughnuts. You can even turn your shake into a complete breakfast meal by including fruit and milk in it for a balanced protein, carbohydrates and fat ratio. Because your muscles will also need carbohydrates after the workout, pair your whey protein with carbohydrates by including a fruit juice in your shake. This will give your protein shake a higher level of effectiveness.

Rachael Richardson. I'm a licensed nutritionist, and registered dietitian, from Nutrolution, in South Beach, Florida suggested that a protein shake is for everybody for it helps balancing our bodies’ blood sugar.  Drinking whey protein shakes will give our body energy to meet its demand and on top of this will result in the extra whey calories converting to fat stores. Another benefit of the whey protein is it can be a medication for fibromyalgia, group of common rheumatoid disorders characterized by achy pain, tenderness, and stiffness of muscles. People with fibromyalgia lack certain chemicals made from proteins and amino acids.

Since most protein shakes are made using a type of dairy protein, people who are lactose intolerant tend to have difficulty digesting them. In addition some people may have an uncommon genetic defect that limits their ability to process the waste products generated from protein digestion. Protein shakes offer an easy, convenient way to supplement your daily protein intake. For best results, keep your protein intake restricted to the recommended 46 to 56 grams per day.

What is the adverse effect of whey protein shake?

Since whey is a milk protein, whey protein shakes can contain the milk sugar lactose. Lactose is a carbohydrate that helps fuel your muscles, but it may cause gastrointestinal distress if you lack the digestive enzyme to break it down. This condition, called lactose intolerance, includes symptoms of abdominal pain, bloating and gas. Whey proteins can also cause allergic side effects, such as a rash, hives or breathing difficulty. Additionally, there are no safety studies on long-term supplementation with whey protein. This is based the University of Illinois McKinley Health Center studies.