Vitamin D, also known as the “sunshine vitamin,” is significant to many bodily functions, especially to bone health, immune response, and moods. However, many people are not even aware that they are deficient in vitamin D until significant health issues occur, as vitamin D levels can be low with no explicit symptoms. It is important to know the signs and process of safely correcting vitamin D deficiency for overall health.
Common Signs and Symptoms of Vitamin D Deficiency
Vitamin D deficiency can manifest in varying ways, with some symptoms being subtle. Some people may not experience any signs or symptoms or have mild signs and symptoms, while others may have the full range of signs and symptoms. Common signs and symptoms of vitamin D deficiency are:
- Fatigue and weakness: Unexplained tiredness and low energy can be a consequence of low vitamin D levels, as the vitamin is very important to cellular energy production. Weakness of your muscles, cramps, or aches of your muscles, especially around your legs and thighs, is also a common complaint of vitamin D deficiency because of the vitamin’s help in the regulation of your muscles.
- Bone and joint pain: Vitamin D is very helpful in the regulation of calcium absorption which is important in the maintenance of strong bones and bone health. Bone pain or back pain associated with vitamin D deficiency is common, often experienced in the lower back, pelvis, legs, or feet. In addition to the pain, bone pain due to a reduction of calcium absorption from vitamin D deficiency can be a significant contributing factor to osteomalacia (soft bones) and would raise concern for osteoporosis. Some may experience ongoing joint pain specifically from vitamin D deficiency.
- Changes in mood: Vitamin D has been linked to serotonin levels in the brain and vitamin D deficiency has been associated with depression, seasonal affective disorder (SAD), anxiety, and mood swings. Some of these mood changes can increase during the winter months due to lower levels of sunlight and subsequently lower levels of vitamin D in the body.
- Frequent illness: It may be more common and frequent for you to catch a cold, flu, or infection due to your immune function being compromised as a result of low vitamin D levels.
- Hair loss: Severe vitamin D deficiency has been shown to have a relationship with alopecia, an autoimmune disorder that causes patchy hair loss. The link is the vitamin’s part in hair follicle cycling and growth.
- Excessive sweating: An early warning sign, and often unknown sign, of vitamin D deficiency could be excessive sweating, particularly on the forehead. Specifically in infants, but can also occur in adults, this could be an early indicator of vitamin D deficiency and may be an early sign.
- Other signs: You may experience weight gain, a loss of appetite, and possibly pale skin, but these may not be as specific as the above-mentioned signs and symptoms and may not specifically indicate low vitamin D levels.
It is very important to understand you may experience any or all of the aforementioned signs and symptoms. Once you recognize a few of the signs and symptoms either through self-recollection of those experiences or experiences from your healthcare provider, it is very important to have your levels examined. A simple blood test to examine your 25-hydroxyvitamin D which is the recognized standard in assessing your vitamin D levels.
Who Is at a Higher Risk?
Individuals are at increased risk for vitamin D deficiency if they have limited exposure to sunlight—this might apply, for instance, to individuals who live in the north, individuals who may spend most of the day indoors, individuals who wear sun protection clothing, or individuals with darker skin who synthesize less vitamin D from sunlight. Elderly individuals, individuals with gastrointestinal conditions (e.g., celiac disease), or individuals with chronic kidney or liver disease are also at risk because of impaired vitamin D metabolism or absorption.
How to Safely Correct Vitamin D Deficiency
Vitamin D deficiency is generally corrected through modifications to the diet, sensible sun exposure, and intended supplementation. Here are methods for correcting vitamin D deficiency safely:
- Diet: Very few foods naturally contain vitamin D; however, fatty fish (e.g., salmon, mackerel, and tuna), egg yolks, and fish liver oils are the primary sources. Many foods are fortified with vitamin D such as milk, breakfast cereals, and plant-milk alternatives. Checking food labelling will allow confirmation of adequate amounts of vitamin D if deficient.
- Sun Exposure: Moderate, unprotected exposure to sunlight will produce vitamin D in the skin. Use of sunscreen, darker skin pigmentation, geographic locations, and seasonal factors will affect vitamin D production. Therefore, managing sun exposure to optimize vitamin D production will always involve balancing the damage to the skin against sun exposure times to optimize skin vitamin D production.
- Supplements: Vitamin D supplements are more often needed for vitamin D deficiency treatment, particularly for known high-risk individuals with confirmed deficiency. Vitamin D recommendations for daily needs differ by age and condition, but generally the recommended daily allowance for adults is 600-800 IU. Vitamin D3 (cholecalciferol) is considered the preferred type of vitamin D. It is generally recommended that vitamin D supplements are taken with food for improved absorption but ideally take supplements under medical guidance that may guide toxicity considerations.
- Monitoring: Administration of high doses of vitamin D can lead to toxicity in the body, which might present via symptomatology such as confusion, nausea, thirst, and calcium dysregulation. To confirm appropriate vitamin D levels during supplementation, blood tests can be collected at regular intervals.
The Larger Health Implications
Vitamin D deficiency has been associated, in addition to its classic bone health effects, with risk factors for cardiovascular disease, diabetes, some cancers, and autoimmune conditions. It is also currently being evaluated for its role in mental health and infections. Although vitamin D supplementation is not a panacea, keeping optimal vitamin D levels is an important part of preventive health.
When to See a Doctor
If you are dealing with chronic fatigue, muscle weakness, pain in bones or joints that are unexplained, mood changes, mild infections, a conversation about vitamin D with your health care provider may be warranted. Early detection and treatment would yield the risk benefit of minimizing the impact on quality of life and the risk of serious complications as the possibility of bone fractures, and chronic disease.
Vitamin D deficiency may present as an insidious impairment, while may manifest as fatigue, muscle and bone pain, change in mood and susceptibility to infections. Like so many things in common, vitamin D deficiency is quite common and is usually multifactorial. It is important to be able to know the signs and know safe ways to correct vitamin D deficiency naturally through the use of diet, exposure to sunlight, and supplementation is the best and safe approach to restore and maintain healthy levels of vitamin D.
Balanced sunlight, food choices, and medical guidance related to supplementing vitamin D is the best way to work toward restoring and maintaining healthy vitamin D levels.
