Is Whey Protein Dangerous

Given whey protein's rise in sports nutrition, a question persists: "Is whey protein dangerous?" As clinical research continues, a definitive answer awaits. In the mean time, perhaps the best approach is one of moderation.

Delicious moderation: whey protein shakes.

Whey protein is a dairy by-product produced during the cheese-making process. A mixture of globular protein, it's available in three forms: isolates, concentrates and hydrolysates.

• Isolates: The most pure and concentrated form of whey protein
• Concentrates: The most common form; it varies between 29% to 89%, depending on the product
• Hydrolysates: A specialty form of whey protein used by athletes and body builders

Though whey protein has been around for centuries, it has gained major popularity in the last 15 to 20 years. Indeed, over the last few decades, both sports nutrition and health food have embraced the benefits of whey. This shift in use has consequently led to questions about overloading and long-term effects.

The reported benefits of whey protein are numerous, though the verdict is still out on many of them.

You'll find there's considerable support for whey protein as a dietary supplement; for athletes especially. According to the Whey Protein Institute, "Whey protein has long been considered the 'Gold Standard' of protein for serious athletes who work hard to develop and sustain a lean, strong and well-defined physique." This would explain why body builders are some of the protein's most vocal proponents.

In addition to building lean muscle mass however, whey protein is also said to help with weight management, muscle loss (from advanced age), wound healing, and improved physical performance.

For the latter, the protein's branched-chain amino acids (BCAA) may help fight fatigue. Comprising 1/3 of skeletal muscle, BCAA plays a key role in protein synthesis and can rebuild body strength and rehabilitate injury. What's more, clinical studies continue into the possible effects of whey protein for cancer, heart disease, and diabetes.

It all sounds good, doesn't it? Yet, there are some side effects you should be aware, too. If you ever wondered, "Is whey protein dangerous?" -- consider the following and decide for yourself.

• Allergies: During the cheese-making process, two proteins are produced: whey protein and casein. Casein accounts for 80% and is mainly what triggers allergic reactions. By contrast, whey comprises only 20% of milk's proteins and also has a higher quality rating. While isolated pure whey protein is generally safe, there's still a risk. For severe dairy allergies, the protein should be avoided.
• Kidney/Liver Damage: Too much protein can put stress on the kidney and liver, as these organs are responsible for elimination within the body. Note however that tests are still being conducted and nothing yet is conclusive. Check with your doctor first.
• Osteoporosis: Too much protein (whey or otherwise) can create mineral imbalance. This imbalance can lead to loss of bone-mineral density, which can lead to an onset of osteoporosis. This particular side effect is still being researched, but the possibility is there and should not be ignored.

These are the more severe side effects you should keep in mind when considering whey protein. Lesser side effects include bloating, cramps, and loss of appetite. Again, the best way to address concerns is to discuss them with your doctor or a health professional. Remember, everyone is different and you shouldn't base your decision(s) on what whey protein has done for someone else.

Note that for a vegan diet, whey protein is off limits just like casein is. However, for vegetarian diets that allow dairy products, like lacto-ovo and lacto diets, whey is generally OK. Be aware though that some whey protein may contain rennet, which makes it not vegetarian. As with all foods and supplements, be sure to read the label carefully. In the case of whey protein, you'll want to pay extra attention to the concentrates as they're always combined with other ingredients. Remember, the percentages can range from 29% to 89% -- that's quite a difference!

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