Are you constantly getting sick, always experiencing fatiuge, and are prone to stress fractures? A vitamin D deficiency could be why.
A Quick Vitamin D Primer
You walk in the sunshine every day (wearing your SPF of course), eat right, get enough sleep. But you still may be missing something even if you’re doing all the right things—vitamin D. Though rare, severely low levels of vitamin D can cause rickets in children and osteomalacia in adults. Osteomalacia is the softening of bones. Left untreated, these conditions can lead to bone pain, soft and brittle bones. Can also lead to muscle pain and weakness, according to the Cleveland Clinic.
However, recent research has suggested a connection between even moderately low levels of vitamin D and a number of surprising health conditions, including diabetes, osteoarthritis, and cancer. Here are a few sneaky signs that you might not be getting enough vitamin D. If you feel that you’re suffering from any of these symptoms, talk with your healthcare provider, who will likely recommend a blood test. This is really the only way to accurately determine your vitamin D level. Then you can discuss ways to boost your levels, typically by taking an over-the-counter supplement.
You're tired all the time
If you aren’t getting enough vitamin D, you may feel completely exhausted, even if you get plenty of sleep. “There is mounting evidence that vitamin D deficiencies are associated with fatigue and sleep disorders,” says Catherine G. R. Jackson, PhD, a professor of kinesiology and exercise science at California State University in Fresno. A study in the North American Journal of Medical Science found that low vitamin D levels causes fatigue in individuals. Taking more vitamin D helped improve their symptoms.
Having the blues may like you back to an insufficient amount of vitamin D. According to the Vitamin D Council, vitamin D receptors have been found in many parts of the brain, including in areas linked to depression. Research shows a link between low levels of vitamin D in the blood and depression symptoms. But it’s still unclear exactly what that link is—whether low vitamin D levels develop due to depression or whether low vitamin D levels may actually cause depression. Pay attention to these 8 warning signs of depression.
Your forehead is often sweaty
Sweatiness on the forehead is one of the first classic noticeable signs of vitamin D deficiency. If you look like you’re glowing even when your body temperature and activity levels are normal, you may need more vitamin D. Try eating more of these vitamin D-rich foods.
Your bones hurt
Adults who don’t get enough vitamin D often have aches and pains in their muscles and bones, especially in the winter. Their joints are also a little stiffer in the morning. “Many aches and pains are symptoms of the classic vitamin D deficiency, osteomalacia,” says Sonya Angelone, MS, RDN, spokesperson for the Academy of Nutrition and Dietetics. Soft bones are more likely to bow and fracture than ones that are healthy and hard.
You're experiencing erectile dysfunction
If you or your sexual partner is suffering from erectile dysfunction (ED), lack of vitamin D may be to blame. A study in the Journal of Sexual Medicine found that men with severe ED had significantly lower levels of vitamin D than those with mild cases of ED. Men with ED often have cardiovascular disease. A lack of vitamin D can also cause cardiovascular disease. Some experts suggest that treating a vitamin D deficiency may decrease the risk of ED, says Angelone.
You're prone to stress fractures
“Most people think of a lack of calcium when talking about bone health, which is true. However, without vitamin D, calcium doesn’t get absorbed properly,” says Jennifer Giamo, a nutritionist, certified personal trainer, and founder of New York City-based Trainers in Transit (who has also run seven marathons). “Vitamin D, specifically D3, which increases calcium absorption, is critical to preventing bones from becoming thin and brittle.” A study in The Journal of Foot and Ankle Surgeryfound that people who participate in higher-impact activities may need greater levels of vitamin D to reduce their risk of stress fractures. Make sure you know these signs of a calcium deficiency.
Your athletic performance could be better
Insufficient vitamin D may impact your fitness levels and muscle function. “You may not even realize you’re not performing at your best.” Paige Waehner, a certified personal trainer, author of The About.com Guide to Getting in Shape and the Exercise Expert at About.com. An analysis published in the American College of Sports Medicine’s Health & Fitness Journal found that vitamin D supplements improved the physical performance in those diagnosed with vitamin D deficiency.
“Vitamin D deficiency is linked to increased inflammation. And after intense exercise, the body is inflamed,” says Giamo. “If adequate amounts of vitamin D are already in the bloodstream, then the speed of recovery from intense exercise is increased.” Giamo warns, though, not to take vitamin D supplements if you aren’t deficient in the nutrient. It’s unlikely you’ll improve your athletic performance or recovery rate. “Since vitamin D is a fat-soluble hormone that doesn’t get excreted by the body, it could be potentially harmful if you take too much,” says Giamo.
You can’t get a good night’s sleep
Researchers found that people who took more vitamin D had a 16 percent lower risk of having trouble getting a full night’s sleep. This is according to a study published in the Journal of Sleep Research. Another large study looked at 1,500 neurological patients over a two-year period who also had abnormal sleep. “The sleep improvement with [vitamin D] supplementation was measurable,” Dr. Jackson says.
You catch everything going around
Finally, but most importantly, colds, viruses, the flu: You name it, you get it. “Vitamin D deficiencies are associated with depressed immune systems,” says Dr. Jackson. “If our immune” A study in the Archives of Internal Medicine found that adults who have low levels of vitamin D are more likely to report having had a recent cold, cough, or upper respiratory infections. Higher levels of vitamin D may also help decrease recovery time from the flu.
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