Are you, a loved one or a friend still suffering from a health issue after you have exhausted traditional healthcare options? Do you constantly feel fatigued or feel something is wrong, but can’t figure out why? Do you wake up multiple times at night, have sleep apnea or restless leg syndrome? Are you overweight and always hungry, and wonder why? You might be surprised to learn that all these problems may be the result of a deficiency of one substance that has been misunderstood since its discovery in 1939. That substance is vitamin D3.While it is called a vitamin, D3 is really a hormone. It was first used to treat a childhood bone disease called rickets. And, nearly all the research on the benefits of vitamin D3 has been done at doses that are 80 times lower than the optimal doses described in this book. This ground-breaking book is your opportunity to regain your health quickly, safely and easily. In The Optimal Dose, he reveals how vitamin D3 saved his own life when all else failed and explains how this essential vitamin is key to finding answers to your own health questions and challenges. You can read more about this book at about book section.

The Optimal Dose has received honorable mention in the 2018 Eric Hoffer award health section and top ten finalist in the 2019 Author Academy Awards

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What have readers said

"I learned so much reading this book!", "Wow, this book was eye-opening" are some of the reviews! You can check them all on book review page.
	Liz MB

Liz MB

Winter Is Coming . . ., no wait, it's already here. According to the doctor, it's perpetually here. But that doesn't have to be the case. The Optimal Dose will astound you with practical, experience based, factual scientific information. And not in a teacher-student way. Dr. Somerville is knowledgeable about his subject and delivers his message with obvious care and passion. There are clear explanations of what he calls "winter syndrome", and how we in our day and times, are all suffering from it. We are all suffering from Vitamin D3 deficiency...
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Henry L.

Henry L.

The pain doctor had not known about the power of Vitamin D. Because of a serious accident, he became a patient. He discovered Vitamin D and greatly improved his health with high-dose vitamin D. He then went on to prescribe 30,000 IU of Vitamin D to >2,000 patients. His very well-written book includes many success stories with sleep problems, weight problems (both loss and gain), pain, and flu. I have read and reviewed virtually every major vitamin D book written in the past decade. This book is in the top 3 of more than 30 books.

Leena St

Leena St

Wow...So much to say. Dr. Somerville's writing is so clear, it's like he is sitting with you telling you a story. He patiently goes through every factor that contributes to Vitamin D deficiency. He explains why current recommended doses are miscalculated. His work is well documented and sited.

Two years ago, I was shocked when my blood test indicated a severe D deficiency. I did my own...
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