The Bad Effects Of Whey Supplements

Whey protein is a highly digestible source of protein often used as a supplement to improve muscle strength and body composition. Whey protein makes up 20 percent of the protein in milk, whereas casein makes up the other 80 percent. Fast-acting whey protein is taken up rapidly by muscles, making it an appealing supplement for bodybuilders and other athletes. The question then is whether it's too good to be true.

Considerations

Those with known allergies to milk or milk products should not take whey as it is milk protein. Certain whey products may also contain soy, important for those with soy allergies. Common allergic reactions include throat itching, facial swelling and vomiting and diarrhea. If you are taking medications, you should be aware that certain drugs may be altered due to whey protein consumption, according to MayoClinic.com. Check with your doctor first. Whey protein may lower blood sugar levels. If you have diabetes or hypoglycemia, check with a health care professional to monitor changes that might be required in medication. Whey may cause a variety of reactions in infants, including colic, increased bowel movements, bloating and severe disability. Consult with your pediatrician before using and if any of these symptoms occur.

Economics

As a means to increase protein to build muscle, whey protein can be an expensive option. The advantage of whey protein is that it is a rich source of amino acids leucine, isoleucine and valine.These are the components that enhance its rapid uptake by muscles. A similar serving to a commercial whey protein powder can be found in a 16-ounce glass of skim milk, at a fraction of the cost, according to "Nancy Clark's Sports Nutrition Guidebook."

Facts

Carbohydrates are needed to refuel muscles. Whey protein powders are often low in carbohydrates. A concern with long-term use of whey protein supplementation is the kidney damage or bone loss that could occur. Diets too high in protein not accompanied by increased water consumption can impair kidney function and increase calcium losses. In lower-calorie diets where protein needs don't change, high protein is a byproduct. Dietary Reference Intake for adults is generally 0.8 grams of protein per kilogram of body weight; recommendations or athletes are often 1.2- 2.0 grams protein per kilogram of body weight. If as an athlete or fitness enthusiast you replace instead of supplementing a well-balanced diet with whey protein, you risk side effects of reduced vitamins, minerals, fiber and phytochemicals from other foods as well as increased kidney stress. As long-term effects are not known, read all labels before use and consult with a physician or registered dietitian to determine if whey is appropriate for you.

Features

The very features of whey can be a disadvantage if weight loss is a goal. That it is rapidly absorbed and easily digested means that it is less filling and less appetite suppressing than protein sources with slower digestibility.