David R. Friedman
Dr. David Friedman is a respected Wilmington, NC chiropractic physician who has a holistic approach to naturopathic and chiropractic care and emphasizes nutrition and diet that is chemical and additive-free. One of Dr. David Friedman’s recent blog articles at www.drdavidfriedman.com provided a ranking of the top 10 types of lettuce in terms of their nutritional content.
In last place is America’s most popular salad variety, iceberg, which has the fewest nutrients due to the way in which it grows as a tight head. This means that the inner leaves receive minimal sunlight exposure and remain light green.
Ranked seventh is red leaf lettuce, which provides abundant vitamin A and K and combines succulence with crispiness and a mild, slightly bitter taste. Green leaf is ranked second and combines red leaf’s benefits with significant vitamin C, potassium, calcium, phosphorus, and manganese.
The most healthy lettuce type is romaine lettuce, which has 10 times the beta carotene of iceberg and approaches spinach in this category. Its long dark-green leaves, with white center ribs, are among the most satisfyingly crunchy when incorporated in salads.
David R. Friedman | Wilmington, NC 
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