article_snippet: Almost all cases are caused by the human papillomavirus (HPV), often spread during sex.
article_snippet: There are more than 100 types of HPV, many of which are harmless.
article_snippet: But some can disrupt the normal functioning of the cells of the cervix and can eventually trigger the growth of cancer.
article_snippet: __________________________________________________________ .
article_snippet: Halitosis is typically caused by bacteria in the mouth which produce unpleasant smelling chemicals as unpleasant smelling chemicals break down food.