Superb Essential Reference for the Family, Excellent Policy for a Nation,
While the other books is more recent (2004 versus 2000), and larger, and more detailed, on balance I recommend that both books be purchased. Each has insights and differing layouts that taken together lead to a better feel for a problem (e.g. menopause, hair loss) and to a personalized approach to using natural cures.
Both are excellent books, I am quite happy to have this one.