Thyroid cancer should not be taken lightly because many smokers end up with this disease after years of smoking cigarettes. There are four forms: papillary, follicular, medullary and anaplastic. Papillary is most common in women and about 75% of women who smoke end up being diagnosed with this form of the disease. http://www.solarcigarette.com/blog/smokeless-cigarettes/cigarette-smoking-causes-thyroid-cancer/