Vitamin D

Overweight and out-of-shape adolescents likely to be vitamin D deficient: Study

Saturday, July 06, 2013 by: David Gutierrez, staff writer
Tags: obesity, vitamin D, sun exposure

eTrust Pro Certified

Most Viewed Articles
Popular on Facebook
BACK INTO THE CLOSET: Why U.S. reporters are not allowed to write about rainbow events in nations where being gay is still condemned
Depopulation test run? 75% of children who received vaccines in Mexican town now dead or hospitalized
A family destroyed: Six-month-old dies after clinic injects baby with 13 vaccines at once without mother's informed consent
INVESTIGATION: Three days before Dr. Bradstreet was found dead in a river, U.S. govt. agents raided his research facility to seize a breakthrough cancer treatment called GcMAF
BAM! Chipotle goes 100% non-GMO; flatly rejecting the biotech industry and its toxic food ingredients
BOMBSHELL: China and America already at war: Tianjin explosion carried out by Pentagon space weapon in retaliation for Yuan currency devaluation... Military helicopters now patrolling Beijing
ECONOMIC SLAVERY FOR ALL: While we were distracted with the Confederate flag flap, Congress quietly forfeited our entire economic future via fast-track trade authority
March Against Monsanto explodes globally... World citizens stage massive protests across 38 countries, 428 cities... mainstream media pretends it never happened
GMO crops totally banned in Russia... powerful nation blocks Monsanto's agricultural imperialism and mass poisoning of the population
SCOTUS same-sex marriage decision may have just legalized the concealed carry of loaded firearms across all 50 states, nullifying gun laws everywhere
Nearly every mass shooting in the last 20 years shares one surprising thing? and it's not guns
Vicious attack on Dr. Oz actually waged by biotech mafia; plot to destroy Oz launched after episode on glyphosate toxicity went viral
Holistic cancer treatment pioneer Dr. Nicholas Gonzalez dies suddenly; patients mourn the loss of a compassionate, innovative doctor who helped thousands heal from cancer
Pepsi drops aspartame from diet soda as consumers reject toxic sweetener
Bride of Frankenfood: Hillary Clinton pushes GMO agenda... hires Monsanto lobbyist... takes huge dollars from Monsanto
Wild eyes and bowl cuts: Why do mass shooters always share the same hair styles and crazed zombie stares?
Mind control through emotional domination: How we're all being manipulated by the "crisis of the NOW"
Genetically white woman now claims self-identify as black: If you can choose your gender, can you also choose your race? What about your species? Can a human claim to be a llama?
(NaturalNews) Along with obesity, poor physical fitness may also be a significant risk factor for vitamin D deficiency, according to a study conducted by Spanish researchers and published recently in QJM: An International Journal of Medicine.

The study was conducted on 470 European males and 536 females between the ages of 12.5 and 17.5 who were taking part in the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) study. Researchers found that adolescents who were both more physically fit and less obese (indicated by a lower body mass index, or BMI) had significantly higher blood concentrations of vitamin D than adolescents with a higher BMI and lower fitness.

Furthermore, the researchers found that overall body fat content was significantly linked to vitamin D deficiency. In males, vitamin D deficiency was correlated with adiposity as well as higher BMI, while in females it was correlated with low fat-free mass. The researchers also found sex-specific correlations between vitamin D and fitness. Among males, higher vitamin D concentration was correlated with higher maximum oxygen consumption; among females, it was correlated with handgrip strength.

The researchers concluded that better fitness and lower BMI should lead to improved vitamin D levels.

"Therapeutic interventions to correct the high rates of vitamin D deficiency in adolescents should consider physical fitness," they wrote.

Vitamin D only improves bone mass in physically fit

The study is only the most recent analysis of HELENA data by the Spanish research team. In a study published in the journal Osteoporosis International just last year, the researchers showed that vitamin D may only improve bone density in adolescents who are physically fit.

Researchers have long known that vitamin D plays a critical role in the formation and maintenance of healthy bones and teeth. Rickets, the most well-known symptom of vitamin D deficiency, leads to bone softening and deformity.

The researchers took measurements of vitamin D concentration, bone mineral density, calcium and vitamin D intake, and physical activity and fitness from 47 Spanish males and 53 females between the ages of 12.5 and 17.5. They found that even after adjusting for age, sex, lean mass, time of year and calcium intake, higher blood concentrations of vitamin D were correlated with higher leg and overall bone mineral concentrations - but only among participants who were physically active.

The study was unable to determine whether vitamin D was leading to improvement in bone mass among physically active adolescents, or whether it was physical activity leading to an improvement in bone mass among adolescents who had sufficient vitamin D levels.

Obesity causes vitamin D deficiency

While the HELENA studies have only been able to demonstrate correlations between vitamin D, obesity and physical activity, a study recently published in the journal PLOS Medicine proved for the first time that obesity is actually a cause of vitamin D deficiency and not the other way around.

The researchers examined the results of 21 prior studies into the connection between obesity, vitamin D status and genetic predispositions to both conditions. They found that while people with genetic predispositions to obesity were more likely to have vitamin D deficiency, people predisposed to vitamin D deficiency were not any more likely to be obese.

Reacting to the study, David Haslam of the UK's National Obesity Forum encouraged people to improve both their weight and vitamin D levels through a simple measure: Spending more time outside.

"This research is a reminder that physical activity, like walking the dog or going for a run out in the sunshine, shouldn't be forgotten and can help correct both weight and lack of vitamin D," he said.

Sources for this article include:

Follow real-time breaking news headlines on
Obesity at
Join over four million monthly readers. Your privacy is protected. Unsubscribe at any time.
comments powered by Disqus
Take Action: Support by linking back to this article from your website

Permalink to this article:

Embed article link: (copy HTML code below):

Reprinting this article:
Non-commercial use OK, cite with clickable link.

Follow Natural News on Facebook, Twitter, Google Plus, and Pinterest

Colloidal Silver

Advertise with NaturalNews...

Support NaturalNews Sponsors:

Advertise with NaturalNews...


Sign up for the FREE Natural News Email Newsletter

Receive breaking news on GMOs, vaccines, fluoride, radiation protection, natural cures, food safety alerts and interviews with the world's top experts on natural health and more.

Join over 7 million monthly readers of, the internet's No. 1 natural health news site. (Source:

Your email address *

Please enter the code you see above*

No Thanks

Already have it and love it!

Natural News supports and helps fund these organizations:

* Required. Once you click submit, we will send you an email asking you to confirm your free registration. Your privacy is assured and your information is kept confidential. You may unsubscribe at anytime.