Thanks for posting your query. I am Dr.Ratnakar Kini and I am pleased to assist you.
Increased hunger like sensation along with nausea could be due to acid peptic disease.
The most common cause being infection with H.pylori bacteria. The next common cause is taking painkiller medications/medications like aspirin.
This can be confirmed with upper GI endoscopy. This may show inflamed inner lining of stomach or even an ulcer.
Relief can be obtained with medications like prilosec or zantac.
Increased hunger is also due to diabetes mellitus. So you can get your blood glucose level checked.
I hope that answers your question. Please feel free to discuss further.