First of all, please consult a neurologist, with a very strong preference for a neurologist at an MS clinic, for current treatment guidelines. The treatment of MS is improving dramatically and the advice of a practicing neurologist must be used in order to treat the disease effectively. The use of a neurologist at an MS clinic insures that one is receiving advice based on the most current medical knowledge. (I say that both from the experience of having a family member with MS and as a pharmaceutical scientist who has a reasonable understanding of new drug development).
That said (and it is true), this is a pretty good book. For 20-some dollars, you get a lot of MS-specific advice and a lot of good recipes. In the first 100 pages, Dr. Swank pulls no punches - he says what he thinks and backs his thoughts up with data. Although I disagree occasionally with his data analysis, and some of his advice is outdated (wrong), I agree with the basic statement that a low-fat diet decreases the rate of progression of the disease by increasing the health and integrity of the cardiovascular system. In the next 250 pages, Dr. Swank lays down the ground rules of a healthy diet for MS patients (low in fat, especially animal fat), and offers a wide selection of healthy recipes.
This is certainly no must-buy book - I really liked it for the comfort it offered, but disliked it the outdated science that was mixed in with the good advice.