Drinkers and smokers should be screened at younger age for colorectal cancer.
D000367:Age Factors; D000428:Alcohol Drinking / Q000009:adverse effects*; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D012737:Sex Factors; D012907:Smoking / Q000009:adverse effects*