title: Vitamin and mineral supplementation practices of adults in seven western states.
abstract: Seven western states (Arizona, California, Idaho, Nevada, New Mexico, Oregon, and Wyoming) were surveyed in 1986 to determine the extent of vitamin/mineral supplementation and dosage levels of single supplements. Questionnaires were mailed to 3,500 individuals. A 57.8% response rate was obtained from the deliverable surveys, with a sample size of 1,730. The sample consisted of 54% women and 46% men and was predominantly white (88.9%). Fifty-four percent of the sample consumed some type of supplement; multiple vitamin/minerals were consumed with the greatest frequency. For single supplements, vitamin C was reported with the greatest frequency (23.1%), followed by some type of calcium supplement (22.5%) and vitamin E (11.1%). More than 80% of the vitamin C users indicated a dosage of 250 mg/day. Most respondents consumed calcium dosages of less than 1,000 mg/day. For vitamin E, 75% of the users consumed more than 200 IU/day. The data suggest that the potential for toxicity due to excess supplementation levels exists in the western states studied.
authors.affiliation: Human Nutrition Program, Department of Home Economics, University of Wyoming, Laramie 82071.
authors.forename: D M
authors.initials: DM
authors.lastname: Medeiros
authors.forename: M A
authors.initials: MA
authors.lastname: Bock
authors.forename: M
authors.initials: M
authors.lastname: Ortiz
authors.forename: C
authors.initials: C
authors.lastname: Raab
authors.forename: M
authors.initials: M
authors.lastname: Read
authors.forename: H G
authors.initials: HG
authors.lastname: Schutz
authors.forename: E T
authors.initials: ET
authors.lastname: Sheehan
authors.forename: D K
authors.initials: DK
authors.lastname: Williams
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001205:Ascorbic Acid / Q000008:administration & dosage; D005006:Ethnicity; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D007182:Income; D008297:Male; D008875:Middle Aged; D008903:Minerals / Q000008:administration & dosage*; D015205:Northwestern United States; D015206:Southwestern United States; D014810:Vitamin E / Q000008:administration & dosage; D014815:Vitamins / Q000008:administration & dosage*
chemical_list: D008903:Minerals; D014815:Vitamins; D014810:Vitamin E; D001205:Ascorbic Acid