I recently received an email informing me that I am not too flattering towards chiropractors. Damn straight. I don't like the bastards. I think they prey on those in pain. One of them nearly paralyzed me. Hanging's too good for them, I say.
Now, having said that, I know several people, including those in my own family, who do not feel this way. They do not have major physical problems and the manipulations practiced upon them act as a palliative. As long as they show up every week, they feel good. More power to them.
I just read a great article about chiropractic. It covers it's rather dubious beginnings up through today. It actually has some good to say about this black art.
If you have ever visited a chiropractor, or are considering it, please read that article. Then read this one. Then go to the official chiro site.
I did everything wrong when I hurt my back. Do your research before you let anyone do anything to your spine.
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.