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Teens, Vitamin D and Risk Factors

No other vitamin has gotten as much press as vitamin D in the past 5 years. Most of the vitamin D literature however has focused on the adult and older adult population. A recent study presented at the American Heart Association scientific meeting has now shown that teens with low levels of vitamin D are at greater risk of high blood pressure, high blood sugar and metabolic syndrome.

The study, which analyzed more than 3500 adolescents aged 12-19 showed that those with the lowest blood levels of vitamin D were;

  • 2.36 times more likely to have high blood pressure
  • 2.54 times more likely to have high blood sugar
  • 3.99 times more likely to have metabolic syndrome*

Researchers adjusted for age, sex, race/ethnicity, body mass index, socioeconomic status and physical activity.

The highest levels of vitamin D were found in whites, the lowest levels in blacks and intermediate levels in Mexican Americans. Whites had almost twice as high levels as blacks.

These data on serum vitamin D levels in young people raise some concern about their food choices and even the amount of time they spend in the sunshine,"
Robert H. Eckel, M.D., American Heart Association past president.

I tend to agree. The horrific diets of our youth combined with sun phobia makes the results of this study unsurprising.

What to do

  • Ensure adequate sunshine: No more than 10-20 minutes of sun exposure on the arms, legs or face 2-3 times per week between the hours of 11 and 2.
  • Eat better: I am a strong advocate of wholesale dietary changes rather than simply trying to "plug holes". Eat a diet rich in fruits and veggies, adequate in protein, good fats and whole grains.
  • Consume foods with vitamin D: Not as easy as it sounds as there aren't many foods rich in this vitamin. Cod liver oil is the top source by a country mile with salmon, tuna and sardines also providing good sources. Most milks are fortified with about 100 IU's of vitamin D.
  • Supplement: Not a bad idea to add a 400 or even a 1000 IU's in the form of a pill or cod liver oil.
For more details see Vitamin D: Are you Getting Enough.

*Metabolic Syndrome is a cluster of risk factors including elevated waist circumference, high blood pressure, elevated triglycerides, low levels of high-density lipoprotein (HDL or "good") cholesterol and high fasting glucose levels.

Source: Eureka Alerts

More like this in Science · Apr 1, 2009
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5 Comments

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Kami Gray, Author of The Denim Diet on 04/ 1/09

"The horrific diets of our youth combined with sun phobia?" Horrific diets to be sure, but my experience with this demographic (girls especially) is that they haven't received the memo about the risks of sun damage like skin cancer and accelerated aging, or why wearing sunscreen is so important. Tanning beds are still hugely popular and teens make up a large part of their customer base. I agree that direct sun on limbs for 10-15 minutes a day (not easy in the Pacific Northwest!) combined with a good diet is the way to go...beats eating cod liver oil!

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Cari from Ditch Diets Live Light on 04/ 1/09

Well I know that as a teen I was certainly must have been well over my vitamin D limit. Sadly, not because I was eating so sensibly - no that was when I was battling anorexia. But being the totally insensible creature I was - I FRIED myself in the sun. I agree with Kami that I'm not sure today's teens are any better, so I find it a surprising study just from that point of view.

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Ann on 04/ 1/09

The study doesn't say that kids aren't getting enough vitamin D or spending enough time in the sun, it just says that having low levels of vitamin D can lead to certain health issues ... There is no statement being made about whether teen girls are tanning too much or too little.

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Jody - Fit at 51 on 04/ 1/09

I think some of the reality shows have bred this quick success, I am invincible attitude among young people. There is so much information out there right now & the younger ones tend to be very tech savvy so they should be able to find it but the don't or they don't care. It is scary & especially the ones that continue to fry in the sun! That info is everywhere!

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Spectra on 04/ 1/09

Even though there are quite a few teen girls that do the tanning thing, there are also a LOT of teens out there that spend next to no time outside and are instead parked in front of their video games all day. When we were kids, we played outdoors for several hours a day in the summer...not "tanning" or anything, but we'd ride our bikes or play a game of baseball or something like that. I don't recall having to put sunscreen on every time we went out, but we never really got sunburnt. I'm thinking that was because we were clothed and because we didn't stay out for more than an hour or two at a time before coming in to take a break.

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