The most popular protein powders available on the market are made from whey protein, found in dairy products. If you are experiencing abdominal pain since adding protein powder to your diet, it's possible that you have lactose intolerance, protein intolerance or an allergic reaction. Stop using protein powders until you can be seen by your doctor to avoid further complications.
Lactose Intolerance
Most protein powders contain a small amount of lactose, according to the Whey Protein Institute. Lactose is a sugar that is found in milk, which requires lactase enzymes to break it down during digestion. Many adults are intolerant of lactose because the human body stops making as much lactase as it did during childhood, according to PubMed Health. If your intestines don't produce enough lactase, the lactose found in whey protein powders will remain undigested, enter you colon and interact with bacteria. This interaction causes abdominal pain, gas and diarrhea.
Protein Intolerance
Although most proteins powders are made from whey, some may be derived from soy. If you develop abdominal pain, you may have soy or milk protein intolerance. CBS News reports that you can be intolerant to any foods, such as milk or soy. Protein intolerance is the inability of the digestive system to break down the proteins in the powder. Abdominal pain, nausea, vomiting, diarrhea, cramping and bloating are common symptoms of food protein intolerance.
Allergic Reaction
If you develop abdominal pain along with other symptoms, you may have an allergy to the protein powder. Both soy and milk are two of the most common food allergens, according to MayoClinic.com. An allergic reaction is a hypersensitivity of the immune system that can cause gastrointestinal symptoms, such as abdominal pain. Other signs of an allergic reaction may include skin rashes, hives, skin irritation, shortness of breath, wheezing, chest tightness, nasal congestion, sinus headaches, dizziness, lightheadedness and an increased heart rate.
Concerns
If you develop abdominal pain along with blood in your vomit or stool, you need to call your doctor immediately. If you are allergic to protein powders you may develop a rare reaction called anaphylaxis. Anaphylaxis is a severe allergic reaction that affects your entire body, which could lead to death. If you notice your face swell, mental confusion and you cannot breathe, you should call 911.
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