Does pan masala causes cancer?

Does pan masala causes cancer?
I want to know about pan masala with 0% tobacco such as Rajnigandha.
I know tobacco causes cancer due to presence of carcinogens

Answer by Sunil Bhatnagar:

Not only Tobacco but other components of Pan Masala are also carcinogenic. Ideally all Gutka and Pan Masalas, with or without tobacco, should be banned completely. Medical Associations are working hard against a powerful business and political lobby.

Gutka/ Pan Masala is a preparation of crushed areca nut (also called betel nut, supari,सुपारी ), tobacco,catechu (an extract of Acacia, keekar or babool कीकर / बबूल), paraffin, slaked lime and sweet or savory flavorings.

Because of adverse publicity tobacco is not being used in some brands.

The International Agency for Research on Cancer (IARC) and the World Health Organization (WHO) accept the scientific evidence that chewing betel/areca and acacia nut is carcinogenic to humans. The main carcinogenic factor is believed to be areca nut. A 2000 study found that areca-nut paan with and without tobacco increased oral cancer risk by 9.9 and 8.4 times, respectively.
[Paan without tobacco,an independent risk factor for oral cancer, International Journal of Cancer, Volume 86, Issue 1, pages 128–131, 1 April 2000]