This book had some very good information on vitamin D, but I disagreed with his nutritional advice. Regarding vitamin D, he points out that it's not really a vitamin as our bodies can produce it given enough sunlight. Vitamins are organic substances that we have to get from our diet. Vitamin d is actually a hormone that belongs to the group called the steroid hormone family.
The Mayo clinic found that 93% of patients with widespread musculoskeletal pain for a long time were deficient in vitamin D. Another doctor found that 83% of patients with chronic back pain were vitamin D deficient. Symptoms of vitamin D deficiency include:
* Fatigue, poor concentration or memory,
* Joint pain and swelling, chronic pain, headaches,
* Cramps, muscle pain or weakness
* Uncontrolled weight gain, high blood pressure
* Bowel and urinary problem
The good news is vitamin D
* Relieves symptoms of seasonal depression
* Slows or prevents many types of arthritis
* Reduces the chances of a heart attack
* Improves insulin release and utilization
* Some of it's favorite partners are vitamin A, thyroid hormone, and variations of growth hormone, meaning they develop partnerships to bind to nuclear receptors
* Vitamin D also works with vitamin A and omega-3 fatty acids
* If you supplement vitamin D, you don't need to supplement calcium
He gives you websites, charts, and skin types to figure out how much direct sun exposure you need at least three times per week. That requires you to have on shorts, a short sleeved shirt, no hat and no sun screen. For me here in Indiana, that would require 20-30 minutes per day between 11:00 a.m. and 4:00 p.m. in the winter, and it's below zero this week, so I'm certainly not going outside in shorts. Therefore I need to supplement my vitamin D. If you don't want to hassle with the blood tests, he recommends 20-25 IU per pound of body weight.
If you have a blood test, he says your levels need to be at a minimum 35 and ideally they should fluctuate between 50 & 70. He says if you're going to have the blood tests you should have it rechecked every three months. Some people notice an increase in energy and a decrease in pain in as little as two weeks, but more commonly it takes up to three months. Magnesium is also often deficient. I loved the book The Magnesium Miracle
if you like reading about nutrition, you'll like it too.
The diet suggestions I didn't like. I felt they were overly harsh. Which is why I gave this otherwise great book only 4 stars. He believes you should eat primarily fresh produce and meat based protein. The subject of how much protein is hotly debated. Dr. Jensen in his classic book Chemistry of Man (Man Series, Second Edition)
said that of the longest lived peoples from around the world, they did eat meat, but in small quantities. If you like to read about nutrition, I also loved Putting It All Together: The New Orthomolecular Nutrition