Yes, who has gastritis can take whey protein and its use appears to even produce beneficial effects in cases of gastritis, as it may help protect the lining of the stomach. Who should not take whey are people allergic to milk, since whey is composed of proteins extracted from whey.
The immune system of these people identifies the milk protein as if it were a foreign body in the body and attacks, causing a series of allergic reactions by the body.
An individual who is allergic to milk protein may have several symptomssuch as asthma attacks, ear infections, the presence of blood or mucus in the stool, diarrhea, gastroesophageal reflux and gastritis.
So if your gastritis is caused by allergy to milk, you should not take whey. If this is not the cause, in principle you can consume whey without problems, but try talking to your gastroenterologist first.
Remembering that milk allergy is different from lactose intolerance. Allergy is related to milk protein and triggers allergic reactions, while lactose intolerance refers to a difficulty in digesting milk sugar (lactose).
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