Getting Adequate Vitamin D

A reader sent me a comment saying that I should look into supplementation for this valuable nutrient.

It is better to get it from grass fed meat, free range chickens and eggs, daily sunlight exposure. There are vital bodily processes that depend on sunlight; your hormone production, your libido, it can greatly impact depression,

Let’s look at what Weston Price has to say. 

The assimilation and utilization of vitamin D is influenced by the kinds of fats we consume. Increasing levels of both polyunsaturated and monounsaturated fatty acids in the diet decrease the binding of vitamin D to D-binding proteins. Saturated fats, the kind found in butter, tallow and coconut oil, do not have this effect. Nor do the omega-3 fats. D-binding proteins are key to local and peripheral actions of vitamin D. This is an important consideration as Americans have dramatically increased their intake of polyunsaturated oils (from commercial vegetable oils) and monounsaturated oils (from olive oil and canola oil) and decreased their intake of saturated fats over the past 100 years.

In traditional diets, saturated fats supplied varying amounts of vitamin D. Thus, both reduction of saturated fats and increase of polyunsaturated and monounsaturated fats contribute to the current widespread D deficiency.

Trans fatty acids, found in margarine and shortenings used in most commercial baked goods, should always be avoided. There is evidence that these fats can interfere with the enzyme systems the body uses to convert vitamin D in the liver.⁸⁰

Vitamin D Therapy

In my clinical practice, I test for vitamin-D status first. If D is needed, I try to combine sunlight exposure with vitamin D and mineral supplements.

Single, infrequent, intense, skin exposure to UV-B light not only causes sunburn but also suppresses the immune system. On the other hand, frequent low-level exposure normalizes immune function, enhancing NK-cell and T-cell production, reducing abnormal inflammatory responses typical of autoimmune disorders, and reducing occurrences of infectious disease.^26;67;68-71 Thus it is important to sunbathe frequently for short periods of time, when UV-B is present, rather than spend long hours in the sun at infrequent intervals. Adequate UV-B exposure and vitamin-D production can be achieved in less time than it takes to cause any redness in the skin. It is never necessary to burn or tan to obtain sufficient vitamin D.

If sunlight is not available in your area because of latitude or season, sunlamps made by Sperti can be used to provide a natural balance of UV-B and UV-A. Used according to instructions, these lamps provide a safe equivalent of sunlight and will not cause burning or even heavy tanning. Tanning beds, on the other hand, are not acceptable as a means of getting your daily dose of vitamin D because they provide high levels of UV-A and very little UV-B.