Conversation: The conversation between human and AI assistant.
[|Human|] I am a 62 year old male who eats very healthy but am experiencing abdominal pain and nausea after eating most meals. (pain is in my central upper abdomen) This has severely reduced my appetite over the past 1-2 years and  has caused me to loose almost 20 pounds of body weight ( 6 feet tall,  currently 155 pounds).  No problem with constipation or diarrhea.  An endoscopy, endoscopy, abdominal ultrasound, abdominal CT Scan, and HIDA scan have all been negative.  What is the cause of my abdominal pain and loss of apetite?
[|AI|]  Hello, Thanks for the query to Chat Doctor. Forum. Since all the tests as endoscopy abdominal ultrasound, C T scan, hide are normal, so good thing. Still pain in epigastric (pain in the center of abdomen as in your query). May be due to as, Tension (stress), hyper acidity (mild degree don't show any findings in endoscopy), Hypertension. As your age is 62 years and pain or fullness with loss of appetite may be due to hypertension, so please consult one more physician and get his opinion. Blood pressure on three occasion on three days will find out exact result. Get in blood for lipid profile. Good luck.