Can vitamin D help prevent certain cancers and other diseases such as type 1 diabetes, cardiovascular disease, and certain autoimmune and chronic diseases? To answer these questions and more, UCSD School of Medicine and GrassrootsHealth bring you this innovative series on vitamin D deficiency. Join nationally recognized experts as they discuss the latest research and its implications. In this program, Michael Holick, MD, discusses vitamin D relating to bone and muscle health and the prevention of autoimmune and chronic diseases. Series: Vitamin D Deficiency – Treatment and Diagnosis [3/2009] [Health and Medicine] [Science] [Professional Medical Education] [Show ID: 15773]
Vitamin D and Prevention of Chronic Diseases
June 4th, 2010 
Mindy 
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@graceoverall He is talking about which blood test to order, not which form of D to take. Buy vitamin D3.
This was an incredibly enlightening vid. I’m going to put it to the test. Only one question:
What does he mean at 25:22? Most vitamin bottles don’t specify either way, so how do we know which we’re getting?
@rock2500123 Supplementing with D will quickly reveal any magnesium deficiency you may have and give you headaches. Magnesium glycinate will quickly reverse that. I always take my D with one of the calcium bone complexes that have Ca, Mg, and Vit K2, like Jarrow Boneup or Garden of Life calcium.
@rock2500123 DONT WANT TO SCARE YOU, BUT IT COULD BE AN INDICATION THAT THE VITAMIN IS ADDRESSING SOME ISSUE IN THE HEAD. WOULD NOT BE A BAD IDEA TO GET A NEUROLOGIST TO DO A MRI TO SEE THAT EVERYTHING IS OK.
I started taking liquid d3 and got really bad headaches, anyone else had this ?
One of the best primers on vitamin D!
Instead of taking one 2000 IU of D3, can one take 50000 IU a week ofergocalciferol?
Uhm, I am wondering …. why would LACK of Vitamin D CAUSE loss of bone density, when the only active ingredient in organic rodenticides (Vitamin D) CAUSES the animals to die by resorping calcium FROM the bones into soft tissue? I submit that low Vitamin D is the RESULT of disease and not the CAUSE.
@SaganAppreciationSoc
D2 doesn’t bind to vitamin d binding protein so it’s not stored for future use and can lead to toxicity. D3 is more natural and can be stored for many months and there is no risk for toxicity.
@thehalo2renegade
that’s a lie , I take 50 000IU every day and I am only 125ng/ml
Not a big fan of D3. I’ll take D2 or sunshine every time, and run from D3.
you need about 2000 to 3000 UI, A good rule of thumb is every 1000 UI you take orally will translate to 10 ng/ml in your blood, i’d say everyone should take 3000 to 5000 UI per day.
So if your levels are 30, how much do you need to take to get to 50 ?
I also believe those diseases are less common in warmer climates
I’m not sure, but indeed people in colder climates would benefit the most from the supplements.
@rock2500123…
Only if your levels are low, some people do not produce enough Vitamin D from sunlight for various reasons including a deficient diet. Remember that even in a “sunny” climate it doesn’t mean the UVB is strong enough in your location to produce vitamin D in your skin.
In other words, yes if you need it.
What if you live in a sunny climate and get adaquete sun exposure year round, do you still need a supplement ?
way to go einstein.
riccidiotcy
This guy is a genius
Dr. Holick is brilliant!!
These kinds of skies are 10 minutes from the ocean, with no oil refinearies or manufacturing plants around. The skies are even over the ocean itself some times.
I was just wondering if anyone has ever done a study to account for heavily chemtrailed skies..
Even on those days where you are not at a vantage point to see planes disappear when you can’t see blue sky in between white flully clouds because there is such a thick white opacity to the sky, and your windshield is coverd with a greyish metallic flake like coating, one has to wonder.
Thank you for your comment.
Even if the airborn pollution was filled with metallic flakes, as they are in chemtrails? I ask this because i live near an airport and have seen ,post chemtrail cloud goo skies, followed with what appears to be cloud LESS skies the next day.. and i have watched planes disappear at relatively low heights into a sky that should not be obscuring my vision to that plane, given my experience with these flightpaths on other days.
Remember, UVB is able to penetrate Earth’s atmosphere; It’s highly doubtful that UVB would be seriously impeded by any kind of airborne pollution.
The toxicity of varying levels of air pollution and its effects on your respiratory system are outside the scope of this lecture; everyone must make their own judgments based on their specific environment.
Truly useful info. Im lucky I found this put up. Thank you for sharing