education, and we did not rely on
reports from administrators or other
faculty. Despite the difficulties in
quantifying an entity as diverse as
nutrition instruction across a four-year
curriculum, we present these results
with confidence.
Limitations
The survey methodology had some
limitations. Respondent self-selection
bias was possible, because the survey was
voluntary. If anything, however, we feel
that this bias might overestimate the
amount of nutrition education, because
nutrition educators, with whom we have
an established relationship, may feel
more compelled to answer the survey.
With a response rate of 86%, however,
this bias should not be so pronounced.
There is an inherent uncertainty about
how different instructors estimated the
hours of nutrition, given that nutrition is
a broad topic that is not always clearly
defined. It is possible that different
instructors at the same institution would
use different definitions and, thus, give
different answers.
The amount of nutrition education
required during the third and fourth
years of medical school is difficult to
estimate, given that much of this
instruction occurs during clerkships
under different instructors. Because
many more instructors in medical
schools are involved in clinical teaching
than are involved in basic sciences
curricula, it is plausible that an instructor
familiar with the basic sciences
curriculum may underestimate the
amount of instruction provided in the
second half of the medical curriculum.
To further examine this possibility, we
conducted a separate analysis comparing
responses of clinicians with those of basic
science instructors. The schools of
respondents who self-identified as
“clinical” instructors provide a similar
number of nutrition education hours as
do the schools of instructors with basic
science orientation.
Future surveys of this type, with
additional resources, could include
multiple instructors at the same
institution in an attempt to confirm and
complete the responses provided. In
addition, if attempts were made to
systematically survey clinical instructors,
the information gained would add to the
understanding of the depth and breadth
of nutrition instruction during the third
and fourth years of medical school.
Conclusions
The teaching of nutrition in U.S. medical
schools still appears to be in a precarious
position, lacking a firm, secure place in
the medical curriculum of most medical
schools. Concerns remain that many
future physicians will lack adequate
preparation in this essential component
of modern medical practice. Despite
these challenges, a minority of medical
schools still manage to provide
substantial nutrition training for their
students. Medical school faculty should
encourage administrators to retain the
nutrition education currently offered and
expand it to provide, at a minimum, the
25 nutrition education hours needed to
properly train physicians.
Acknowledgments: The authors gratefully
acknowledge all of the medical school faculty
members who completed surveys and express
appreciation to the Nutrition in Medicine Project
advisory board.
Funding/Support: The Nutrition in Medicine
Project was supported in part by grant no. R25
CA65474 from the National Cancer Institute and
the Office of Dietary Supplements, National
Institutes of Health, and by grant no. DK56350
from the University of North Carolina Clinical
Nutrition Research Unit.
Other disclosures: None.
Ethical approval: The institutional review board at
the University of North Carolina at Chapel Hill made
the determination that this project was exempt.
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