Purpose
U.S. cancer survivors commonly use vitamins/minerals and
complementary and alternative medicine (CAM). We compare use of
vitamins/minerals and CAM by adult cancer survivors and cancer-free adults,
and estimate annual out-of-pocket expenses.
Methods
Data on self-reported vitamin/mineral and CAM use in the past 12
months from the cross-sectional 2012 U.S. National Health Interview Survey
were used to estimate prevalence of use and out-of-pocket expenditures. The
cohort included adults with (n=2,977) and without (n=30,551) a self-reported
cancer diagnosis.
Results
Approximately 79% of cancer survivors and 68% of
cancer-free adults reported using ≥1 vitamins/minerals and/or CAM
modality in the past year. Compared to cancer-free adults, cancer survivors
were more likely to report use of vitamin/minerals (75% vs.
61%, P<0.001), herbal/non-vitamin supplements (24%
vs. 19%, P<0.001), manipulative and body-based therapies
(19% vs. 17%, P=0.03), and alternative medical systems
(5% vs. 4%, P=0.04). Adult cancer survivors and cancer-free
adults spent an annual estimated $6.7 billion and $52 billion out-of-pocket,
respectively, on vitamins/minerals and CAM. Survivors spent 60% of
the total on vitamins/minerals ($4 billion), 18% ($1.2 billion) on
herbal/non-vitamin supplements, and 7% ($0.5 billion) on
massage.
Conclusions
Compared with cancer-free adults, a higher proportion of cancer
survivors report vitamin/mineral and CAM use. Cancer survivors, who
accounted for 6.9% of the total population, accrued more than
11.4% of the annual out-of-pocket costs on vitamins/minerals and CAM
spent by U.S. adults.
Implications for Cancer Survivors
Given the high use of vitamins/minerals and CAM in cancer survivors,
studies are needed to analyze health outcomes and the cost:benefit ratio of
such use.