My son is 24 years old, he had gained weight about 2 years ago but since then has returned to his normal weight, however every morning when he wakes up he has nausea and vomits everyday. He had asthma when he was younger and is allergic to fish. What can trigger morning sickness such as this in a man.
I read your question and i understand your concern. With asthma and allergies to fish, nausea could be a correlation or a separate entity. Irritable bowel syndrome and gastritis due to meds for asthma should be evaluated.
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