I did not believe it for a long time. When we moved to thailand an old lady told us, when ever we should get dengue fever or or fever because of a cold - we should drink fresh papay leafe juice. Heaven thanks we never got serious sick but hubby had an awful cold at the end of last year and high fever...all bones were hurting and so I remembered the advice. I went to the garden, picked 2 papaya leafes off my tree and put them into my juicer. The result was maybe 6 cl juice and I forced hubby to drink it. It was very bitter...and he didnt like it at all, but drank. And not man hours later he felt better and the fever was gone. So from now on this is my secret for curing fever - even I hope I dont need often.