People who are lactose intolerant can use whey protein powder without experiencing any of the symptoms of lactose intolerance, according to the Whey Protein Institute. Whey protein powder commonly is used in dietary and muscle-enhancing workout products. Whey protein is derived from cow's milk and might not be considered safe for people with a milk allergy. If you experience adverse reactions after ingesting whey protein powder, talk with your doctor before continuing use.
About Whey Protein Powder
Cow's milk is made of two primary proteins, whey and casein. Whey makes up about 20 percent of the milk and considered the liquid part, while casein is the curd, used to make cheese and other hard diary products. Whey protein is considered to be the higher-quality protein and dissolves better in water, according to the Whey Protein Institute. Because whey protein is made from cow's milk, many users are concerned about the amount of lactose in the product.
Lactose Intolerance Background
Lactose intolerance is a condition in which the body doesn't produce enough lactase, the enzyme that breaks down lactose, leading to digestive issues, according to MedlinePlus. Most people have a certain level of difficulty digesting milk, but only those with significant symptoms are considered lactose intolerant. A person with lactose intolerance will experience gas, bloating, diarrhea, floating stools, vomiting, abdominal pain and cramping when she ingests milk products.
Safety
Whey protein powder contains less than 0.1 g of lactose per tablespoon, according to the Whey Protein Institute. This is less lactose than what is found in a cup of yogurt and should not affect someone who is lactose intolerant. Whey protein concentrate might cause adverse effects in someone who is lactose intolerant.
Allergy Consideration
MayoClinic.com states that whey protein powder is not considered safe for those with a milk allergy because the body can mistake the whey protein for a harmful substance and attack it. This chemical reaction leads to common food allergy symptoms, such as hives, asthma and nasal congestion. Although most people with a milk allergy are under 3 years old, it can affect anyone.
Treatment
Lactose intolerance is incurable but it manageable. Use milk alternatives, such as soy or almond milk, which are not made from dairy and contain no lactose. Take a lactase supplement when consuming diary products.



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