No one can tell you that MS is "reversible." Do you even have such a diagnosis? Like most hyper immune conditions, skillful application of a spectrum of natural healing protocols may help keep symptoms in check, reduce the occurrence of "flares" and in the case of MS lengthen the "remitting" and minimize the "relapsing" times of your illness.
The actual "causes" of these conditions are officially unknown. What we do know with increasing certainty is that they have multiple triggering factors, so thinking about "preventing" the onset on such conditions in advance is problematic.
As a person who has experienced multiple chemical sensitivity and candida, eventually received a diagnosis of Rheumatoid Arthritis, as well as having had a number of falls, accidents, childhood abuse, etc...I can tell you that even the most skilled chiropractic care is usually limited in what it can do [unless the individual practitioner is including therapies in addition to classic chiropractic spinal manipulation]. My chiropractors kept me walking around and that was great. Once I began working with more nuanced body modalities that were broader in approach than chiropractic, I also began to reverse the downward spiral of increasing physical dysfunction that had been my pattern.
In my case, I started to get miraculous results with people trained in Integrated Manual Therapy (IMT) work. My practitioners have all had some measure of training in this, as well as Loren Barry and Frank Lowen bodywork. In general, what you want to find are one or more people who are experienced in bringing entrenched trauma out of the cells of your body. As you release the trapped trauma, your symptoms will begin to mitigate. It is my personal belief that when the problems are structural, the body work needs to have some hands on manipulation to fully succeed. This may range from almost negligible to substantial manipulations. Reiki and other hands off energetic work can be wonderful, but I have less faith in their ability to unwind the structural compressions and twists in our tissues (muscles, nerves and fascia as well as skeleton) that months and years of compensating for original damage can create.
Best of luck to you on your healing journey.