Eat Your Veggies, Help Your Arteries
Vegetable-Rich Diet Tied to Less Artery-Clogging Plaque
June 19, 2006 -- Scientists are serving up yet another reason to put
vegetables on your plate: It might discourage plaque from accumulating in your
So says Michael Adams, DVM. He's a professor in Wake Forest University's
pathology/comparative medicine department in Winston-Salem, N.C.
Adams and colleagues recently studied nearly 100 young male mice at high
genetic risk for artery-clogging plaque. For four months, the researchers fed
half of the mice a vegetable-free diet.
The other mice got the same number of calories, but 30% of those calories
came from equal parts of freeze-dried corn, carrots, green beans, broccoli, and
peas. Adams' team chose those vegetables because they're five of the most
common vegetables in the U.S. diet, not counting potatoes.
Why not include potatoes? Because in the U.S., they're typically served
drenched in fat from frying, the scientists note in The Journal of
Nutrition's July issue.
After four months, the scientists checked the mice's arteries. They found
38% less plaque in the arteries of mice that had eaten the vegetable-rich diet,
compared with mice that had eaten no vegetables.
Mice fed the vegetable-rich diet also had modestly better cholesterol levels
-- including a slight drop in LDL ("bad") cholesterol -- and had gained
7% less weight.
How do vegetables help tame plaque? That's still uncertain, write Adams and
Adams' team checked the data to look for clues. They concluded that the
differences in weight and cholesterol between the two groups of mice didn't
totally account for the plaque gap.
But the researchers found another clue related to inflammation, which is
associated with hardening of the arteries (atherosclerosis). Adams and
colleagues found lower levels of an inflammatory marker in blood from the mice
on the vegetable-rich diet, compared with those lacking vegetables.
The study was funded by the General Mills Company, which supplied the
SOURCES: Adams, M. The Journal of Nutrition, July 2006; vol 136: pp
1886-1889. News release, Wake Forest University Baptist Medical Center.