What are the most popular non-fiction books (published since 1998 and
in English) on promoting or improving or maintaining your own health
as an adult?
By "most popular" I am meaning most commonly bought or loaned from
libraries in North America. I am particulrly interested in those books
that approach this from a conventional medical standpoint - for
example, involving visits to physicians, use of drugs and supplements,
vaccinations etc. If possible I would like some documentation as to
why the books listed are considered the most popular. In each case I
need the title, author(s), publisher & year of publication.

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Request for Question Clarification by jchorush-ga on 14 Nov 2002 21:09 PST

As another reacher commented, it would probably be impossible
to find statistics on loans for individual titles from libraries.
I can, however, find titles which are owned by the largest numbers
of libraries, which would probably correlate closely with books 
which are loaned out the most often.  Would this information be 
sufficient for you?

U have a problem there, most libraries do not collect statistics down
to an individual title.  Mostly, they would be more concerned with the
overall category i.e. Health books versus other type of subjects etc.

But for current popularity u might want to check out any of the
e-bookstores e.g. Amazon, they do rank their sales of the books,
checkout the Health books and compare their popularity (in terms of
how it rank in their sales) and you would be able to get a proxy
estimation.