[PHNUTR-L] UCLA/LSU study details nutritional value of salad
Kathrynne Holden, MS, RD
fivestar at nutritionucanlivewith.com
Sun Sep 3 05:04:58 PDT 2006
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Public release date: 1-Sep-2006
Contact: Sarah Anderson
sanderson at ph.ucla.edu
University of California - Los Angeles
UCLA/LSU study details nutritional value of salad
Go ahead and indulge at the salad bar. "Rabbit food" is nutritious for
A new UCLA/Louisiana State University study of dietary data on more than
17,500 men and women finds consumption of salad and raw vegetables
correlates with higher concentrations of folic acid, vitamins C and E,
lycopene and alpha and beta carotene in the bloodstream.
Published in the September edition of the peer-reviewed Journal of the
American Dietetic Association, the study also suggests that each serving
of salad consumed correlates with a 165 percent higher likelihood of
meeting recommended dietary allowances (RDA) for vitamin C in women and
119 percent greater likelihood in men.
The study is the first to examine the relationship between normal salad
consumption and nutrient levels in the bloodstream, and also the first
to examine the dietary adequacy of salad consumption using the latest
nutritional guidelines of the Food and Nutrition Board of the National
Academy of Sciences.
The findings blunt concerns about the human body's ability to absorb
nutrients from raw vegetables, as well as concern that the structure and
characteristics of some plants undercut nutritional value.
"The consistently higher levels of certain nutrients in the bloodstream
of salad-eaters suggest these important components of a healthy diet are
being well-absorbed from salad," said Lenore Arab, visiting professor of
epidemiology at the UCLA School of Public Health and co-author of the
study with L. Joseph Su, assistant professor at the LSU School of Public
"The findings endorse consumption of salad and raw vegetables as an
effective strategy for increasing intake of important nutrients.
Unfortunately, we also found daily salad consumption is not the norm in
any group, and is even less prevalent among African Americans," Arab said.
"We have so many food choices in this county. Increasing vegetable
consumption is a wise strategy for composing a nutrient rich diet," she
added. "In fact, our findings suggest that eating just one serving of
salad or raw vegetables per day significantly boosts the likelihood of
meeting the recommended daily intake of certain nutrients."
The study examined the relationship between reported salad consumption
and blood serum nutrient levels, as well as dietary adequacy in pre- and
post-menopausal women and men of comparable ages. The research team
analyzed dietary data from 9,406 women and 8,282 men ages 18 to 45 and
55-plus contained in the National Health and Nutrition Examination
Survey III conducted in 1988-94.
Salad consumption was based on reported intake of salad, raw vegetables
and salad dressing. Laboratory measurements determined levels of
nutrients in blood serum. Associations between salad consumption and
serum nutrient levels were determined using statistical regression
models. Measurements were adjusted to account for age, exercise,
anti-cholesterol medication, smoking and other variables.
The research was funded by an educational research grant from The
Association for Dressings and Sauces.
The UCLA School of Public Health is dedicated to enhancing the public's
health by conducting innovative research, training future leaders and
health professionals, translating research into policy and practice, and
serving local, national and international communities. For more
information, see http://www.ph.ucla.edu/.
Kathrynne Holden, MS, RD < fivestar at nutritionucanlivewith.com >
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