10 Vitamin D Deficiency Symptoms Many Doctors Miss| Updated: May 15, 2019
Flu is actually vitamin D deficiency disease. It is not a happenstance occurrence because you didn’t get a flu shot or sat next to a coughing person at Church or on the train.
Dr. John Cannell of the Vitamin D Council and one of the most preeminent Vitamin D researchers in the world today, has identified that vitamin D helps produce the antimicrobial peptides that protect against the flu. This is why people are more prone to the flu in winter when Vitamin D producing sunshine is minimal or nonexistent at some latitudes, or people are too bundled up to get enough skin exposed in the first place.
Scientific research bolsters Dr. Cannell’s suggestion that vitamin D deficiency is why people get the flu. A study published in the journal Nature Immunology further explains how vitamin D protects us by properly activating T cells, an important part of the immune system:
“When a T cell is exposed to a foreign pathogen, it extends a signaling device or ‘antenna’ known as a vitamin D receptor, with which it searches for vitamin D.
This means the T cell must have vitamin D or activation of the cell will cease. If the T cells cannot find enough vitamin D in the blood, they won’t even begin to mobilize.”
This is troubling given that vitamin D levels were reported by the Archives of Internal Medicine in 2009 to have plummeted for every single age, race, and ethnic group in the United States over the past two decades.
Vitamin D deficiency is such that it can lurk unnoticed until it is too late and you are already sick. Another challenge is that it takes time, usually at least several weeks, to raise vitamin D levels. As a result, a few days of taking supplements is not going to cut it. This is true especially if you have a serious deficiency challenge to overcome or already have the flu.
Below are 10 signs that vitamin D is likely a problem and potentially a serious deficiency that needs to be addressed immediately. If any of these symptoms are an issue for you, a simple and inexpensive vitamin D blood spot test can be ordered online. It can be used in the privacy of your home to determine if your vitamin D levels are in the danger zone (source).
If low levels do indeed need to be addressed, the best whole food based supplement to bring vitamin D levels into optimal range without the danger of overdosing (like with prescription vitamin D drops) is unheated, unprocessed cod liver or skate liver oils (where to find).
Two foods extremely high in Vitamin D include fish roe and lard from pastured animals. Roe contains about 17,000 IU of Vitamin D per tablespoon and pastured lard has 10,000 IU per tablespoon according to tests conducted by the Weston A. Price Foundation.
Vitamin D Deficiency Symptoms Usually Blamed on Something Else
1. Chronic Pain
Bone pain and chronic pain in general is a subtle symptom of serious vitamin D deficiency. Don’t take this symptom lightly! Get your vitamin D levels checked and address the problem.
A study conducted by Greg Plotnikoff, MD, senior consultant with the Allina Center for Health Care Innovations, makes the point. 150 people living in Minneapolis who came to a health clinic complaining of chronic pain were tested for vitamin D levels. Virtually every single one, 93%, suffered from extremely low vitamin D. “The group with the lowest levels of vitamin D were white women of childbearing age,” Plotnikoff says.
2. Muscle Weakness
Here’s a shocker most folks don’t realize: most muscle weakness issues are low vitamin D related. The National Institutes of Health reports that a person suffering from a vitamin D deficiency will have trouble with proper muscle function.
This extremely common skin issue is an autoimmune disorder that many don’t realize can be vitamin D related. This nutrient plays an important role in the treatment of psoriasis. Psoriasis gets worse over time and spreads, so even if you only have a little spot on your elbow or knee, get your vitamin D levels checked and be sure to be taking a daily dose of fermented cod liver oil.
4. Constant Fatigue
Vitamin D is necessary for the body to produce energy. If you are constantly tired or must lean heavily on that morning cup of Joe to get going in the morning, best to play it safe and get your levels checked.
No, it’s not all in your head! Feelings of hopelessness can be related to nutritional D deficiency. The Vitamin D Council reports that vitamin D is critical for the brain to produce the happy hormone seratonin. Some folks only suffer from depression during winter months, known as Seasonal Affective Disorder (SAD). This condition is caused by lack of sun exposure and hence vitamin D during this time of year.
6. Sweaty Head
This is quite possibly the weirdest symptom of vitamin D deficiency. Old time doctors apparently used to ask new mothers if their heads were sweatier than normal in order to pinpoint a lurking vitamin D deficiency as reported by NDHealthFacts. A sweaty head is also a subclinical symptom of rickets, possibly the most prominent and dangerous form of vitamin D deficiency in children.
7. Constant Respiratory Problems
This warning symptom is related to flu as a vitamin D deficiency disease. If low vitamin D puts people at risk for flu, it stands to reason they would be at risk for other respiratory problems too and possibly on a chronic basis. Studies have demonstrated that vitamin D protects against respiratory illness particularly in children, who require hospitalization most frequently due to bronchiolitis and pneumonia.
Scared of Enterovirus D68? The most proactive step you can take is to make sure your children are taking a daily dose of cod liver or skate liver oil!
8. Hypertension and/or Cardiovascular Disease
My mother helped resolve high blood pressure issues with a daily dose of high vitamin cod liver oil. Her success in this regard is in line with the Vitamin D Council which recommends adequate vitamin D levels in order to avoid this silent, symptomless killer. 1 out of every 3 Americans and 4 in 10 worldwide suffer from this serious condition.
In addition, the National Institutes of Health has identified vitamin D deficiency as a risk factor which can lead to congestive heart failure.
9. Chronic Kidney Disease
Chronic kidney disease is a growing health concern. It is a primary and powerful predictor for premature cardiovascular disease.
Not surprisingly, given that cardiovascular disease itself indicates a likely vitamin D deficit, research indicates that those that suffer from chronic kidney disease are also D deficient in a big way.
10. You are an Infection Magnet
If you suffer from one infection after another, it is wise to get those vitamin D levels checked pronto. As described above, T cells which are an important part of the immune system, are properly activated by vitamin D. If D levels are low or even undetectable, adequate and effective immune response to any infection in the body will be severely hampered.
Do you suffer from one or more of these 10 symptoms of low vitamin D? Did you know that these signs are usually blamed on something else? Did you suspect a vitamin D deficiency might be the true reason? Have you ordered a blood spot test kit or started taking fermented cod liver oil? What did you find out from testing and what have your results been?
Sarah, The Healthy Home Economist
Sources and More Information
Vitamin D Deficiency is Why You Get the Flu
Serious Lack of Vitamin D Warning Signs
Macrobiotic Diet and Vitamin D Deficiency
Vitamin D2 in Mushrooms?
Since 2002, Sarah has been a Health and Nutrition Educator dedicated to helping families effectively incorporate the principles of ancestral diets within the modern household.
Sarah was awarded Activist of the Year at the International Wise Traditions Conference in 2010.
Sarah received a Bachelor of Arts (summa cum laude, Phi Beta Kappa) in Economics from Furman University and a Master of Government Administration from the University of Pennsylvania.
Mother to three healthy children, blogger, and best-selling author, her work has been covered by USA Today, The New York Times, National Review, ABC, NBC, and many others.