title: Long-term multivitamin use may be cancer preventive in middle-aged and older men.  Findings are part of first  large-scale trial linking effects of common multivitamins with prevention of chronic diseases.
mesh_terms: D000367:Age Factors; D000368:Aged; D018890:Chemoprevention / Q000379:methods*; D019587:Dietary Supplements / Q000706:statistics & numerical data*; D007722:Health Knowledge, Attitudes, Practice; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000517:prevention & control*; D012307:Risk Factors; D014815:Vitamins / Q000627:therapeutic use*
chemical_list: D014815:Vitamins