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Reply with quote  #1 

Hi Dee -


My brother recently moved to Seattle from Scottsdale.  Now that he does not see the sun for weeks, should he be concerned about having enough Vitamin D?  (He does not consume any dairy products due to allergies.)  Thank you for all your helpful answers.


Posts: 1,162
Reply with quote  #2 

Vitamin D is a fat-soluble vitamin that is essential for maintaining normal calcium metabolism. Vitamin D3 (cholecalciferol) can be synthesized by humans in the skin upon exposure to ultraviolet-B (UVB) radiation from sunlight, or it can be obtained from the diet. Plants synthesize vitamin D2 (ergocalciferol), which also has vitamin D activity in humans. When exposure to UVB radiation is insufficient for the synthesis of adequate amounts of vitamin D3 in the skin, adequate intake of vitamin D from the diet is essential for health.


Unfortunately Vitamin D is found naturally in very few foods. Foods containing vitamin D include some fatty fish (mackerel, salmon, sardines), fish liver oils, and eggs from hens that have been fed vitamin D.  Recently, orange juice fortified with vitamin D has been made available in the U.S. A calcium supplement with magnesium and vitamin D should be taken along with dietary sources.

Dee McCaffrey
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