Are Melatonin Supplements Safe?
Over-the-counter melatonin (“anti-gonad hormone”) supplements tend not to contain what they say they do, and the contaminants could be dangerous.
All Videos for Sunlight
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How to Treat Jet Lag with Light
Use cheat sheets to figure out exactly when and how to treat jet lag using light exposure and light avoidance at specific times of the day, based on which direction you’re going and how many time zones you cross.
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Do Vitamin D Supplements Reduce the Risk of Dying from Cancer?
Sun exposure is associated with lower rates of 15 different cancers and improved cancer survival. What happened when vitamin D supplements were put to the test?
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The Risks and Benefits of Sensible Sun Exposure
We don’t have to choose between the lesser of two evils: skin cancer versus internal cancers from vitamin D deficiency.
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The Best Way to Get Vitamin D: Sun, Supplements, or Salons?
If one is going to make an evolutionary argument for what a “natural” vitamin D level may be, how about getting vitamin D in the way nature intended—that is, from the sun instead of supplements?
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The Optimal Dose of Vitamin D Based on Natural Levels
Why do some recommend thousands of units of supplemental vitamin D when the Institute of Medicine set the recommended daily intake at just 600 to 800 units?
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How Much Vitamin D Should You Take?
The safe dose of vitamin D supplementation to get most of the population to the optimal level is 2,000 IU a day, but the elderly and overweight may need more.
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Will You Live Longer if You Take Vitamin D Supplements?
What do 56 randomized clinical trials involving nearly 100,000 people between the ages of 18 and 107 show vitamin D can do to our lifespan?
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Do Vitamin D Supplements Help with Diabetes, Weight Loss, and Blood Pressure?
Those with higher vitamin D levels tend to have lower rates of obesity, diabetes, and hypertension, but is it cause and effect? Interventional trials finally put vitamin D to the test.
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The Protein-Combining Myth
The myth that plant proteins are incomplete, necessitating protein combining, was debunked by the scientific nutrition community decades ago.
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How to Regenerate Coenzyme Q10 (CoQ10) Naturally
Chlorophyll in our bloodstream after eating greens may react with wavelengths of sunlight that penetrate through our skin to reactivate the antioxidant Coenzyme Q10 (ubiquinol).
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Are Calcium Supplements Effective?
What is the optimal daily dietary calcium intake and might benefits for your bones outweigh the risks to your heart from taking calcium supplements?
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Appropriating Plant Defenses
Plants and animals share similar biochemical pathways and signaling systems, which may explain why so many phytonutrients are beneficial to our physiology.
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Orange Aromatherapy for Anxiety
The smell of sweet orange essential oil may have anxiety-reducing properties without the potentially addictive, sedating, and adverse effects of Valium-type benzodiazepine drugs.
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Is Vitamin D3 Better Than D2?
Vitamin D3—sourced from sunlight exposure, animal, and plant sources—may be preferable to vitamin D2 sourced from fungi.
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Vitamin D Supplements May Be Necessary
To reach the circulating (25-hydroxy) vitamin D levels associated with the lowest overall mortality, one may need to take supplements, given data suggesting suboptimal production from sun—even under optimal circumstances.
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Vitamin D and Mortality May Be a U-Shaped Curve
Vitamin D deficiency may shorten one’s lifespan, but getting too much vitamin D may also adversely affect longevity.
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Evolutionary Argument for Optimal Vitamin D Level
Should the vitamin D levels found in lifeguards be considered the norm for our species, given the fact that we evolved running around naked all day in equatorial Africa?
