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Looking for Sources of Vitamin D

Q. I took cod liver oil in the late 1930s and early 1940s when I was a kid. In the 40s a new form of cod liver oil was introduced that my father called the sunshine pill. I guess that even then there must have been an understanding of the need for sunshine.
A. Many people your age have memories of being dosed with cod liver oil for their health when they were children. Most make a face at the recollection!
Cod liver oil in those days was rich in vitamin D, vitamin A and omega-3 fatty acids. Nowadays, cod liver oil is much easier to take, but the vitamin D and some of the vitamin A may be removed during the purification process.
Brief sun exposure is an excellent way to maintain good blood levels of vitamin D. In the winter, however, sun exposure is neither practical nor effective, so vitamin D supplements are advisable. An intake between 1,000 and 2,000 IU daily usually provides most people with enough of this crucial nutrient.

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About the Author
Terry Graedon, PhD, is a medical anthropologist and co-host of The People’s Pharmacy radio show, co-author of The People’s Pharmacy syndicated newspaper columns and numerous books, and co-founder of The People’s Pharmacy website. Terry taught in the Duke University School of Nursing and was an adjunct assistant professor in the Department of Anthropology. She is a Fellow of the Society of Applied Anthropology. Terry is one of the country's leading authorities on the science behind folk remedies..
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