I read with great personal interest the article about Dr. Zheng, “Increased Risk of Non-Hodgkin’s Lymphoma Linked to Hair Dye” [Summer 2004].

My late sister did use dark hair dye for years, and I found this article about Dr. Zheng’s research interesting, in that work is still being done on this possible relationship. I think that this research is important, taking into account the large number of women who do use hair dyes.

William J. Waskowitz, M.D. ’57
New Britain, Conn.