The more I learn, the more I'm convinced that most diseases can be easily cured with proper diet and exercise. Some of the rest can be cured with simple home or traditional remedies such as the one you describe. Very few require professional medical intervention.
Example: For years I used to take an ointment and an eye drop every time I got uveitis; and the uveitis happened ~2 times a year, mostly when the seasons changed for the colder. Had to go to the eye doctor, get the prescription, and all that jazz. Now what I do is I cover my head with a hoodie for as much of the day as I can and I wash my eye with cotton dipped in black tea 3 times a day. Never needed the eye doctor since I started doing this. Is it possible that medicine is unaware of this? Hard to believe that some scientist hasn't described it in some paper that others willfully ignore or don't care to confirm with further research.