In December 2018 researchers from China published the results of their review of the medical scientific literature to assess the association of hair dye use and risk of non-Hodgkin’s lymphoma. A total of 16 studies were included in the review. Results showed that hair dye users, especially females, had a 14% risk of developing non-Hodgkin’s lymphoma and that the risk was higher for those individuals who had dyed their hair for 20 years and over.
Qin L et al. A Meta-analysis on the Relationship Between Hair Dye and the Incidence of Non-Hodgkin’s Lymphoma. Med Princ Pract. 2018 Dec 24 [Epub ahead of print]