IMAGES PROVIDED BY:
(1) David Sacks / Photodisc
(2) Leszek Kobusinski / iStock / 360
(3) jabiru / iStock / 360
(4) Jupiterimages / Goodshoot / 360
(5) Jupiterimages / Pixland / 360
(6) Elena Elisseeva / iStock / 360
(7) Richard Jung / Taxi
(8) Pontuse / iStock
(9) Foodcollection
(10) Beth Galton / Photolibrary
(11) Sally Ullman / StockFood Creative
(12) Fotostorm
(13) Joannawnuk / iStock / 360
(14) Wavebreakmedia Ltd / Wavebreak Media / 360
SOURCES:
American Heart Association.
Cleveland Clinic.
American Journal of Clinical Medicine.
University of California.
Mayo Clinic.
University of Maryland Medical Center.
The National Center for Biotechnical Information.
The Linus Pauling Institute at Oregon State University.
U.S. Department of Agriculture: Dietary Guidelines for Americans 2010.
Harvard Medical School.
The Canadian Medical Association Journal.