Here is some info on the new Health Savings Account that was passed late last year by Congress. Might be good news for self-employed traders. http://www.foxnews.com/story/0,2933,107933,00.html
I've been researching MSA's. This seems as good if not better. Here's a pdf that explains. From IRS. http://benefitslink.com/IRS/notice2004-2.pdf