Do They Have Any Nutritional Value? Iceberg Lettuce, Celery,
Parsley By Liz Applegate From Runner's World magazine Do all
vegetables offer nutritional value? I wondered, so I asked a few
nutrition experts - the responses may surprise you. This is part
of a continuing series to keep you informed about the benefits
of the "not-so-famous" fruits and vegetables. Value: It's an
excellent source of vitamin K with one-sixth of a medium head
(about six large leaves) containing 25 percent of your daily
requirement. Notably, a serving also contains 8 percent of your
daily requirement for vitamin A and 6 percent for folate, says
Nicholas D. Gillitt, Ph.D., nutrition researcher at Dole
Nutrition Institute in California. Although water accounts for
more than 95 percent of its weight, iceberg lettuce also
contains a moderate amount of fiber and supplies modest amounts
of omega-3 fats, antioxidants, vitamins and minerals, says
Christopher E. Ramsden, M.D., author of Nutrition by the Numbers
(Applied Nutritional Biochemistry