Good morning.
One of my sources sent me this article and I wanted to share it with you. Vitamin D has been a popular subject here, and in conversations with friends. I love the sun as you all know, but is it giving me enough Vitamin D? Who Knows. I take a liquid Vitamin D3, but how do know if I’m getting enough? And according to this article, even having your Vitamin D levels tested may not give you the answer.
Vitamin D dose myths – 6 fun factoids
As the mountain of vitamin D research (showing its importance) grows to Everest heights, you may be wondering about some statements that are thrown around as “truth.” Here are some fun vitamin D myths to pass along (by email, twitter or facebook) to friends, family and loved ones, because, when it comes to vitamin D, you want to get your dose (even of information) JUST RIGHT:
1) Just go out in the sun, already. That will fix everyone’s vitamin D levels. Right? Is it true that you can get enough vitamin D from the sun? Um, well, that depends on who “you” is. For example, our media tends to assume we’re all Nicole Kidman pale – hence the widely cited recommendations that 10-15 minutes of daily sun can suffice. If you’re darkly pigmented (whatever your ethnic background), studies show that, if you live north of L.A., you would need to be out, at minimum, from November to May, fully naked, for TWO SOLID HOURS at midday to get enough vitamin D. Yikes…talk about a recommendation being far off the mark! For many working, non-Nicole-Kidman Americans, it would be actually physically impossible to get enough vitamin D, using the sun only.
2) Okay, I hear you, but I get a lot of sun – that should do it, right? See, the stinker is that you can get so much sun, you’re sunburned, and STILL not get enough vitamin D. How exactly, is that? Vitamin D is blocked by sunscreen, by glass, by shade, by fog (I’m talking to you, San Francisco!), and even by tall buildings. That means you can get sunburned through a car window and still make almost no vitamin D. In fact, once your skin begins burning, it starts to actually off-load and break down the vitamin D it just made! Even if you’re low!
3) Hey, isn’t sun bad for you? The interesting thing is that vitamin D, sun, and that worst of all skin cancers – melanoma – appear to be nastily snarled together in a three-way physiologic tug-of-war. What does that mean? Turns out that LOW vitamin D levels are associated with INCREASED risk of melanoma (even when you control for lifetime sun exposure), but that more sun (especially burns) means more risk of melanoma. All together, the paradox between vitamin D and melanoma may explain why sunscreens (which block vitamin D) have been shown, in several studies, to actually INCREASE the risk of melanoma. So what do you want for optimum health? Probably, to have a great blood level of vitamin D, and (if you’re Nicole-Kidman-pale), as little sun as possible.
4) Just drink milk, already. All this talk of supplements is clearly a ruse to make money. Right? First, no one should be sucking down lots of full-fat milk – not for optimum health. Second, even if you go the non-fat-milk approach, how many glasses would a non-pregnant adult need to drink to get the generally acknowledged 1,000 units a day for vitamin D maintenance? Any guesses? Try 10 (count ‘em – 10!) glasses a day! Urk. The amount of vitamin D put into milk was chosen so that small toddler-kiddies would NOT be overdosed on vitamin D. Unfortunately, lactose intolerance is also very very real – and much more common among African Americans (estimated at 70%). Which means that, in our infinite idiocy, we, as a nation, chose to put vitamin D additives in the ONE place where the population that needs it MOST couldn’t get it…sheesh.
5) So if my blood test is normal, that means I’m okay. Right? For all those of you who are staying up with your vitamin D checks, congratulations – you’re taking a simple, cheap and side-effect-free way to promote your health. However…you may want to find out what “normal” means to your lab. Even your personal doctor may not be aware that almost all labs report “normal” based on the average (or median) of all that lab’s test results. With as many as 80-90% of African Americans vitamin D deficient, your lab’s “normal” may actually calculate out to “low.” So what is “normal”? For one thing, it’s higher than almost all lab cut-offs. How do we know that? First, some studies looked at how high a human’s vitamin D level needed to be to block your body from sending out a distress-type hormone (called PTH). That blood level was way higher than a lab’s calculated “normal.”
Second, studies that looked at how high a vitamin D level needed to be to stop some of the problems of low vitamin D (like receding gums – yes – that’s a well-studied result of too-low a vitamin D), found that blood levels had to be much higher than (you guessed it) a calculated lab’s “normal.” Finally, researchers went to the source – when they checked the blood levels of equatorial agriculture workers in Third World countries (who still live the way almost all humans did only a few generations ago), they found, as you could predict, levels that are much higher than our labs’ “normal.”
6) Vitamin D prevents fractures by strengthening bones. Right? One of the best things about vitamin D is that it can reduce the number of fractures in the elderly. But what was a shocker to researchers was that it achieved this result, weirdly, by preventing falls from ever happening in the first place. Vitamin D is crucial for normal muscle function, and when it gets really low, people can get something called a hip girdle sway – if you’re wondering what that looks like, imagine that slow, painful-looking, Frankensteinish, entire-leg-hip swing a frail elderly person in a wheeled walker does to take a step. Replacing vitamin D allows muscles to repair and function so that people actually don’t fall.
Bottom line? You CAN overdose on vitamin D. There are reasons, despite all the mountains of encouraging research, why no one, officially, has said (yet) how much every person should take every day. The first reason is that no public official wants to step forward and be the one to say that, in order to be “normal,” vast numbers of Americans need to take a supplement…for life. The second, better, reason is that (as the sun discussion, above, shows), we’re not all the same. Personalized vitamin D replacement and maintenance is the way to go. Get your blood level tested, get good advice on your result and replacement, then make sure it’s re-checked (and re-checked again) to verify you stay in a healthy range.
What do you think? Do you think vitamin D is all it’s cracked up to be? Is it a vast supplement conspiracy, or, instead, a failure of modern medicine to care for those most affected? Share in the comments section – and keep up on the latest health issues in the news, and healthcare reform insanity/hilarity by signing up for a Doc Gurley RSS feed with the tiny orange button at the top. Look for future weekly Dodging Death articles here at Doc Gurley – discover the weird, the wacky and the everyday symptoms you want to know about, as well as practical expert tips on staying well. And do you want to be on the inside, fast track of news and tips? Get on the Twitter bandwagon and follow Doc Gurley! Also check out Doc Gurley’s joyhabit and iwellth twitter feeds – so you can get topic-specific fun, effective, affordable tips on how to nurture your joy and grow your wellth this coming year.
Got a thingie on your doohickey? Or are you pondering how to tell your doctor he’s a jerk? Send your burning healthcare questions to Doc Gurley by emailing docgurleyatgmaildotcom. Doc Gurley cannot answer every question, and she cannot practice medicine through a keyboard (not even with her stethoscope pressed firmly against the monitor) but be assured – your questions will be kept strictly confidential and identifying traits are changed.
Posted By: Doc Gurley (Email) | January 09 2010 at 01:26 PM Read more: Click here.
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Readers: Anything you want to share in regards to this?
Hi Ruth: Good to hear from you again. It sounds like everyone has been pretty busy with the holidays and now ‘just life’. I understand about the posting. No worries. It is frustrating for me too when I know my readers have a lot to say on a subject and they can’t get in. I know I am busy and if I were in your shoes, I probably would not have the time to continue to repeat my entries either.
I was excited to hear that the girls are interested in everything -Nice. I’m sure being in their new home, and with you, exposes them to all…and unfortunately all is not a bed of roses, but that is life, as you say. However, there is enough challenges in life as it is. I was just sorry to read that racism has now entered into their lives. Please give the girls a big hello from me.
Janet, Mike, Peter, Anna: Thanks for continuing to post your very informative and interesting articles. I appreciate you all taking the time to keep us informed.
Hey Zen Lill: I am sorry that we haven’t had the chance to catch up again like we had talked about. Where did the time go? Thanks for checking in here. It is evident your health advice is missed. Speaking of…
…I just wanted to say that I take resveratrol – have taken it for the past two years. I have never been a big drinker and I can no longer drink red wine so I decided to start taking this for its antioxidant benefits. First in a capsule form from Dr. David Williams; Here’s the link just in case you or my readers are interested. And now I take it in liquid form. I really like it. I hope that your biz trip goes well.
Thanks Evelyn: How are you doing?
Donna: Hmmm…a serious education? Maybe. There are many topics discussed on my blog, so stick around. You are sure to learn a lot. I certainly do. :) Oh…and I wouldn’t take the ‘dumb’ remark to heart from a 6 yr-old. Not knowing something does not mean you are dumb. But I certainly would’ve taught her a thing or two about being disrespectful. Rude behavior is just not acceptable.
Irene: No response from the men yet.
Urte: Hello. Is there any more you can tell us?
See ya later…
Gratefully your blog host,
michelle
Aka BABE: We all know what this means by now :)
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