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The myth of the eight-hour sleep. 22 February 2012Last updated at 11:58 ET By Stephanie Hegarty BBC World Service We often worry about lying awake in the middle of the night - but it could be good for you.

The myth of the eight-hour sleep

A growing body of evidence from both science and history suggests that the eight-hour sleep may be unnatural. In the early 1990s, psychiatrist Thomas Wehr conducted an experiment in which a group of people were plunged into darkness for 14 hours every day for a month. It took some time for their sleep to regulate but by the fourth week the subjects had settled into a very distinct sleeping pattern. Linus Pauling Institute at Oregon State University. To receive more information about up-to-date research on micronutrients, sign up for the free, semi-annual LPI Research Newsletter here.

Linus Pauling Institute at Oregon State University

Vitamin A English | Español Vitamin A is a generic term for a large number of related compounds. Retinol (an alcohol) and retinal (an aldehyde) are often referred to as preformed vitamin A. Liquid Melatonin 10 mg - Natural Black Cherry Flavor Solgar Vitamins, Minerals, and Herbs. Solgar® Liquid Melatonin 10 mg is a terrific choice for people experiencing occasional sleeplessness, those with jet lag or anyone wanting to promote sound, quality sleep.

Liquid Melatonin 10 mg - Natural Black Cherry Flavor Solgar Vitamins, Minerals, and Herbs.

This is because Melatonin helps the body maintain a normal circadian (biological) rhythm. Melatonin supplementation may help you awaken feeling refreshed and revitalized. This product is also ideal for those individuals who may need a higher level of sleep support. Magnesium Update. Please Read Before Proceeding: I am not a physician, I am a clinical nutritionist and can not and do not prescribe.

Magnesium Update

The information provided here is for educational purposes only. Any decision on your part to read and use this information is your personal choice. References are available. There is a charge for reference information. If you are under the care of a physician for any of the conditions listed here please conduct your own further research and fully inform your physician of your intention to alter your magnesium intake. If you are currently experiencing any type of kidney condition or disease, do not use magnesium supplements without the full knowledge and approval of your physician. More information about Vitamin D, calcium and magnesium is available from sunlightd.org. Deficiency Conditions and SymptomsLosses Caused ByResourcesRecommended Dietary AllowanceFormula to Calculate Daily Magnesium RequirementHow to Use Magnesium and What Kind to TakeGuidelines of Magnesium Use.

Mark Hyman, MD: Vitamin D: Why You Are Probably NOT Getting Enough and How That Makes You Sick. What vitamin may we need in amounts up to 25 times higher than the government recommends for us to be healthy?

Mark Hyman, MD: Vitamin D: Why You Are Probably NOT Getting Enough and How That Makes You Sick

What vitamin deficiency affects 70-80 percent of the population, is almost never diagnosed and has been linked to many cancers, high blood pressure, heart disease, diabetes, depression,(i) fibromyalgia, chronic muscle pain, bone loss and autoimmune diseases like multiple sclerosis? (ii) What vitamin is almost totally absent from our food supply? What vitamin is the hidden cause of much suffering that is easy to treat? The answer to all of these questions is vitamin D. Over the last 15 years of my practice, my focus has been to discover what the body needs to function optimally. Two recent studies in the journal Pediatrics found that 70 percent of American kids aren't getting enough vitamin D, and this puts them at higher risk of obesity, diabetes, high blood pressure and lower levels of good cholesterol.

How Vitamin D Regulates Your Cells and Genes 1. 2. 3. 4. 5. 6. Mark Hyman, M.D. Linus Pauling Institute at Oregon State University. To receive more information about up-to-date research on micronutrients, sign up for the free, semi-annual LPI Research Newsletter here.

Linus Pauling Institute at Oregon State University

Vitamin D English | Español Summary Vitamin D can be synthesized in the skin upon exposure to sunlight and is then metabolized in the liver and kidney to the metabolically active form called 1,25-dihydroxyvitamin D. Through binding to the vitamin D receptor (VDR), 1,25-dihydroxyvitamin D can regulate the expression of hundreds of genes involved in skeletal and other biological functions. Vitamin D is a fat-soluble vitamin that regulates calcium homeostasis and is vital for bone health (1).

Function. Magnesium Update. Vitamin A. HUILE DE FOIE DE MORUE 1000mg 120 Capsules Molles de BIOVEA® - BIOVEA FRANCE.