Abstract
Use of dietary supplements is widespread, yet intakes from supplements are difficult
to quantify. The Supplement Reporting study utilized a unique inventory method to
quantify dietary supplement use across 1 year in a sample of 397 supplement users.
Interviewers visited participants' homes in 2005-2006 to record supplement purchases
and the number of pills in each supplement bottle every 3 months. Total use for the
year was calculated from these inventories. Participants in this observational study
were older adults (average age 68 years) from the Multiethnic Cohort in Hawaii and
Los Angeles, CA, with approximately equal representation of men and women and six
ethnic groups (white, Japanese American, Hawaiian, African American, Latinos born
in the United States, and Latinos born elsewhere). The most commonly used supplement
type was one-a-day multivitamins/minerals, which were taken at least once during the
year by 83% of men and 73% of women. Other common supplements were vitamin C, fish
oil, vitamin E, and bone or joint supplements. Participants used a median of seven
(women) and five and a half (men) different supplements during the year. There were
few differences in supplement use across ethnic groups for men, but use tended to
be highest for white and Japanese-American women. Use of nonvitamin/nonmineral supplements
was common among these older adults, sometimes at high doses. When assessing intakes,
supplement use should be correctly quantified because users tend to take many different
supplements and nutrient intakes from supplements can be substantial. The inventory
method may help improve the measurement of supplement use.
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Biography
S. P. Murphy is a researcher, Cancer Research Center of Hawaii, University of Hawaii, Honolulu
Biography
L. R. Wilkens is a specialist, Cancer Research Center of Hawaii, University of Hawaii, Honolulu
Biography
A. D. Steffen is an assistant specialist, Cancer Research Center of Hawaii, University of Hawaii, Honolulu
Biography
K. M. Yonemori is a research nutritionist, Cancer Research Center of Hawaii, University of Hawaii, Honolulu
Biography
Y. Morimoto is a research nutritionist, Cancer Research Center of Hawaii, University of Hawaii, Honolulu
Biography
C. L. Albright is an associate researcher, Cancer Research Center of Hawaii, University of Hawaii, Honolulu
Biography
K. R. Monroe is an assistant professor, Keck School of Medicine, University of Southern California, Los Angeles
Article info
Publication history
Accepted:
December 30,
2010
Identification
Copyright
© 2011 American Dietetic Association. Published by Elsevier Inc. All rights reserved.
