Well, probably you did. Or you might have just been sick for a year or two and coincidentally gotten better at the same time as the diet and lifestyle changes. The odds are small, but given that you're a sample size of one it might well prove it to you, but not to others.
I was sick for a long-time and was getting progressively worse. I understand that what works for me may not work for others. I am simply suggesting we look for the root cause and possibly look for alternatives other than drugs. For some people there may be no alternatives and I understand that.