Swampy I admit the example of Jane Fonda was a little extreme, but an appropriate response to your claiming that a medical treatment is valid because celbrities have done it. While there are intelligent celebrities, most of the rest combined don't have the sense that you or I have in our big toe. I think Ronald Reagan was arguably the best president this country has ever had, but we all know what kind of shape he was in during his twilight years, both mentally and physically.
Our medical system is far from perfect. I sat here writing examples from my own experience and life then realized that was unecessary, as we all have such examples. Also, it raises my hackles hearing about feds coming after anyone with guns blazing, so to speak.
Anyway, back to the discussion at hand. There are many natural things that work. Many modern pharmacueticals are botanically derived, such as aspirin. Don't forget penecillin, derived from yeast. The human body also has a incredible ability to heal itself, and amazing adaptability. As I said before the mind also has an incredible ability to heal, proven in part by scientific placebo studies that have been succesfully replicated time after time. Here in lies the key. Some things may cure themselves, some may not. Some treatments may work most every time, some only work part of the time. This is where the large grey area is and where these quack doctors operate.
Lets say I have a cancer and a quack doctor suggest a treatment. I procede with treatment and live. Well I didn't need those nasty treatments this guy cured me! Conversely, I have the same cancer and go to a real doctor, take the treatments and the unpleasantness associated with them (which I have witnessed first hand) and die. Modern medicine is crap and I suffered unecessarily when I should have been out enjoying my last days.
Looking at individual cases tells you nothing about how things actually work. You have to evalute many cases, and see the overall results for any given condition, treatment, special circumstances, etc. Next you have to find a way to remove any bias from the people studying the data. Finally you have to repeat these steps many times and get the same results. This is what modern medicine/science does. Quacks tell you they cured someone so they can cure you too. They may believe in what they are doing, or they might be tricky spinsters, but either way the results are the same.
It now becomes an issue of faith, not fact: I have faith this guy will cure me, I have seen him do it so I don't care what anyone else says they are wrong! Whether they know they are doing it or not, these "doctors" prey on this faith and use it to their advantage.
If I have faith in the outcome of my life, I am going to take it from god not from a man.