Every cell, tissue and organ in your body contains the macronutrient protein, which provides your body with energy. The digestive process breaks down protein in food into amino acids that repair and replenish the body.

Whey protein and lactose are both found in milk, but they can be separated from the milk through a lengthy process. Whey does contain lactose, but if you’re mildly or moderately lactose intolerant, you may be able to use whey protein without any symptoms. Most whey protein powders contain 0.

Although it's often best to get your essential nutrients from eating whole foods, protein shakes can offer a quick, low-calorie option, which is better than skipping a meal. Although most protein shakes contain between 200 and 400 calories, they aren't a magic bullet for weight loss.

Protein and a certain amount of fats help with your energy needs but too much can disrupt your sleeping patterns. Excess amounts of protein and fats can also cause weight gain, especially if you are inactive. Extra pounds can lead to problems with insomnia.

Although proteins act in virtually all life-sustaining processes in your body, too much of a good thing can be bad. As U.S. obesity rates skyrocket, many have turned to high-protein diets to lose weight. Athletes and bodybuilders also consume high-protein diets as a way of life for their performance needs.

Most protein bars are made from milk or soy proteins, which can cause stomach aches if you have an allergy or intolerance towards these proteins. Stop eating protein bars if you experience stomach aches every time you eat them.

According to the National Sleep Foundation, there’s no specific number of hours people must sleep. Amounts vary from person to person and can change based on age, health and even temporary circumstances.

High urine protein, also called proteinuria, is a red flag for chronic kidney disease. Often this goes on for years, until picked up during a routine physical or life insurance exam. In some instances, it can be controlled by diet.

Protein shakes consist of protein powder mixed with water or milk. Usually prepared in a blender or a shake cup, protein shakes are an integral part of the pre-workout regimen for many people. Drinking a protein shake before exercising is supposed to improve your workout and aid in achieving fitness goals.

All of your cells contain protein, but that doesn't mean they can store extra protein at will. Your body breaks down protein foods to obtain specific amino acids that support multiple functions, including growth, tissue repair and enzyme production.

Although it may offend delicate sensibilities, flatulence is a fact of life. Everyone passes gas throughout the day to release intestinal gases that build up during the digestive process -- some more than others. The frequency and odor of each individual's gas is as unique as their diet.

If you have been diagnosed with irritable bowel syndrome, or IBS, you may not be able to take whey protein powder. Whey protein powder is made from cow’s milk. Whey is one of the two primary proteins found in dairy. MayoClinic.com states that diary products are a common food that can trigger IBS symptoms.