You are free to buy whatever you like. You show a very strong physical grounding in your understanding of illness.
There are tons of data our there, study after study confirm this and contradict that. In spite of millions spent on research there still are no firm conclusions about cause beyond infections and dietary illnesses.
The physiology is understood down to the molecule but the cause is still elusive. Why? Because the refusal to look beyond the physical, a locked in unspoken assumption that disease is strictly physical with only physical causes.
So far I have 100% success with cancer. Other practitioners in my field are in the 90%+ range. To me it is no longer a debate, I have seen too many first hand cases to deny the truth.
I write to those that dare peer out of the box and offer a hand of hope. You are free to take it or reject it.