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? And what is the safe dose of vitamin D supplementation to get most of the population to the optimal level of 2,000 IU a day?

Flashback Friday: Will You Live Longer if You Take Vitamin D Supplements & How Much Should You Take?

Michael Greger, M.D. FACLM, founder of NutritionFacts.org and New York Times best-selling author of How Not to Die, How Not to Diet, and the just-released How Not to Age, brings you the latest in evidence-based nutrition research, delivered in easy to understand video segments. NutritionFacts.org is a non-profit and non-commercial public health organization, and more than 2,000 videos on virtually every aspect of healthy eating are available on our website. New videos and blogs are uploaded every day–always without any sponsors, ads, brand partnerships, or paid subscriptions.

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Health & Fitness

Based on nearly 100 randomized controlled trials, fluoride toothpaste reduces dental cavity rates, but what about just adding fluoride to the water supply?

Why Is There Fluoride in Water? Is It Effective?

Beyond the antioxidant, anti-inflammatory, and alkaline-forming qualities of fruits and vegetables in general, are there extra benefits our bones can get from particular produce?

Onions and Tomatoes Put to the Test for Osteoporosis

Astonishingly, a baby with a heavy surrogate mother and a thin biological mom may harbor a greater risk of becoming obese than a baby with a slim surrogate mom and a heavy biological one.

Friday Favorites: The Role of Epigenetics in the Obesity Epidemic

Even just a single extra serving of fruits and vegetables per day is associated with lower bone fracture risk.

Three Reasons Fruits and Vegetables May Reduce Osteoporosis Risk

How does the new shingles vaccine compare to the previous one?

Flashback Friday: Will You Live Longer if You Take Vitamin D Supplements & How Much Should You Take?

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