Dr. David Brownstein,  editor of Dr. David Brownstein’s Natural Way to Health newsletter, is a board-certified family physician and one of the nation’s foremost practitioners of holistic medicine. Dr. Brownstein has lectured internationally to physicians and others about his success with natural hormones and nutritional therapies in his practice. His books include Drugs That Don’t Work and Natural Therapies That Do!; Iodine: Why You Need It, Why You Can’t Live Without It; Salt Your Way To Health; The Miracle of Natural Hormones; Overcoming Arthritis, Overcoming Thyroid Disorders; The Guide to a Gluten-Free Diet; and The Guide to Healthy Eating. He is the medical director of the Center for Holistic Medicine in West Bloomfield, Mich., where he lives with his wife, Allison, and their teenage daughters, Hailey and Jessica.

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Why Am I Tired in Winter?

Monday, 23 Aug 2010 09:34 AM


Question: Why do I get tired every winter?

Dr. Brownstein's Answer:

During the winter we get less of the “sunshine” vitamin, vitamin D. In fact, our levels of vitamin D can fall by more than 50 percent in the northern climates. Even in the South, the sun is not as strong in the winter and vitamin D levels can fall.

I recommend checking your vitamin D levels. If levels are below 50 nanograms per decilitre (ng/dl), supplementing with is a must. My experience is that 2,000 to 5,000 international units (IU) of vitamin D a day are safe and effective for most people.

You can periodically check your levels (known as the 25-hydroxy D3 levels) to ensure you are not taking too much. Adequate levels of vitamin D range from 70 to 100 ng/dl. A good source of vitamin D is Carlson’s cod liver oil (1.5 teaspoons per day) or Bio-D-Mulsion Forte available from Viotron at (800) 437-1298.





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