Cancer cervix is more seen in multiparous women and less seen in nullipara. This may be due to chronic irritation due to sexual life for longer duration in multipara.

Cancer lip is more seen with chronic smokers due to chronic irritation of the delicate lip mucosa, leading to purposeless neoplastic growth

Cancer stomach is more seen with those people who insult their gastric mucosa with offending agents like drugs, hot and spicy foods, alcohol etc.

Cancer larynx is frequently seen with singers and teachers. who abuse their voices.

Personal experience. My own maternal uncle, who developed a habit of folding and twisting the skin on his Adam's apple for 40 years developed epithelioma of skin there and died.

Hence God given tissue should be respected because that greatest engineer has included in each cell, all the necessary ingredients of life.