Healthology - Hair Loss -
 Information on hairloss, balding, thinning, as well as treatments and new advances, articles and web casts.
http://healthology.com/

How Stuff Works: Hair Loss -
Illustrated 13-part narrative explains what hair loss is and describes the various hair replacement options available today.
http://www.howstuffworks.com/hair-replacement.htm

Keratin.com -
 Information, links, book reviews, message boards and FAQs dealing with alopecia and other types of hair loss.
http://www.keratin.com/index.shtml

MayoClinic: Hair Loss Overview -
 Provides an introductory to hair loss, signs and symptoms, causes and available treatment.
http://www.mayoclinic.com/invoke.cfm?id=DS00278

Morphollica Hair Loss Information Center -
 Includes treatment descriptions, news, product reviews, forums and the author's own commentary on hair loss.
http://www.morphollica.com

Natural Hair -
 Provides information on androgenetic alopecia, drugs and natural treatment options.
http://natural-hair.com/aloinfo_index.html

No Gray Hair -
Information and advice on the treatment and prevention of hair loss and gray hair.
http://www.no-gray-hair.com

Practical Management of Hair Loss -
A detailed source of information for the treatment of hair loss conditions like androgenetic hair loss, alopecia areata, telogen effluvium, and trichotillomania.
http://www.derm.ubc.ca/hairinfo/