Weird Symptoms of Vitamin D Deficiency – Decoding Vitamin D.

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At Randox Health, our mission is to help you understand your health better. Today, we’re shedding light on a topic that might surprise you – the weird symptoms of vitamin D deficiency. Vitamin D, the ‘sunshine vitamin’, is essential for bone health, immune function, and overall well-being. However, many of us are oblivious to the fact that a lack of this nutrient can lead to a variety of strange symptoms. So, let’s unravel this mystery together!

Unravelling the Mystery of Vitamin D Deficiency

Vitamin D, often coined as the ‘sunshine vitamin’, is a powerhouse nutrient that is critical to our overall health. Our bodies produce it when we bask in the sunlight, but the reality is, many of us aren’t soaking up enough sun, leading to a vitamin D deficiency.

This nutrient is a key player in regulating calcium and phosphorus levels in the body, which are vital for maintaining strong bones, teeth, and muscles1. It also bolsters our immune function, dials down inflammation, and aids in cell growth and division2.

Several factors can contribute to a vitamin D deficiency. Limited sun exposure is a common culprit.

Living in areas with less sunlight, spending most of the day indoors, or using excessive sunscreen can all hamper the production of vitamin D. Other risk factors include having darker skin, being elderly, or overweight1.

Vitamin D deficiency is more widespread than you might think. Research indicates that over 1 billion people globally have inadequate levels of vitamin D3. In the UK, around 1 in 5 adults and 1 in 6 children are estimated to have a deficiency4.

If not addressed, vitamin D deficiency can lead to various health problems. Some of the unusual symptoms tied to this condition include bone pain, muscle weakness, fatigue, and even depression3.

Weird Symptoms Of Vitamin D Deficiency

While it’s well-known to be crucial for strong bones, there are some weird symptoms of Vitamin D deficiency. Apart from the usual suspects like fatigue and muscle weakness, vitamin D deficiency can show up in some rather odd ways.

One such oddity is hair loss5,6. It’s normal to shed a few strands daily, but if you spot more hair on your brush or in the shower drain than usual, it might be worth checking your vitamin D levels.

Another unusual symptom is chronic pain. As vitamin D plays a key role in reducing inflammation, low levels can lead to unexplained and continuous pain in your bones and muscles3. If you’re experiencing unexplained aches and pains, a vitamin D deficiency could be the culprit.

Vitamin D deficiency can also wreak havoc on your mental health. Studies suggest that low levels of vitamin D may be connected to depression, anxiety, and mood swings7. If you’re feeling down or facing sudden mood changes, it’s worth investigating if a deficiency in vitamin D is the cause.

Finally, in children, it may lead to delayed growth and an increased risk of infections8,9 while adults with a deficiency may experience frequent bone fractures, weak immunity, and even heart problems3.

Decoding a Vitamin D Deficiency.

So why are we even discussing the weird symptoms of vitamin d deficiency in the first place?

Identifying a vitamin D deficiency is vital to address potential health issues associated with low levels of this crucial nutrient. There are several common tests used to diagnose vitamin D deficiency, but understanding the results and knowing when to seek medical advice is equally important.

Interpreting your test results involves understanding the reference ranges. In the UK, vitamin D levels above 50 nanomoles per litre (nmol/L) are considered sufficient10. If your test shows a result below this value, it may signify a deficiency.

If you suspect you may have vitamin D deficiency, or have received test results indicating low levels, it is important to seek medical advice. Your healthcare provider can further evaluate your condition, consider your symptoms, and recommend an appropriate treatment plan. They may also assess your overall health and lifestyle factors that could be impacting your vitamin D levels.

Overcoming Vitamin D Deficiency.

Whilst there are various common & weird symptoms of Vitamin D deficiency, there are also numerous effective treatments and strategies to address this deficiency and enhance overall health.

Medical treatments for vitamin D deficiency mainly involve supplementation. Your healthcare provider may prescribe specific doses of vitamin D supplements based on your individual needs. These supplements are available in various forms, including tablets, capsules, and oral drops. It’s important to follow your healthcare provider’s instructions regarding dosage and duration of treatment.

In addition to medical treatments, there are natural ways to increase vitamin D levels. The most effective method is through exposure to sunlight. Spending time outdoors, especially during the peak hours of sunlight, can help your body produce vitamin D naturally. However, it’s crucial to protect your skin from harmful UV rays by using sunscreen or wearing protective clothing.

Another natural way to boost vitamin D levels is by consuming foods rich in vitamin D. Good dietary sources include oily fish (like salmon and mackerel), red meats, fortified dairy products, and egg yolks1. Incorporating these foods into your diet can contribute to maintaining adequate vitamin D levels.

Boost Your Diet with Vitamin D-rich Foods.

Vitamin D plays a crucial role in maintaining overall health and well-being. While sunlight is a primary source of this essential nutrient, incorporating vitamin D-rich foods into your diet is equally important. By including these foods in your daily meals, you can ensure that you are meeting your recommended daily intake and enjoying the benefits of a vitamin D rich diet.

Natural food sources of vitamin D include fatty fish like salmon, mackerel, and sardines1. These fish are not only tasty but are also packed with this valuable nutrient. Additionally, fortified dairy products such as milk, yoghurt, and cheese are excellent sources of vitamin D. For those who follow a plant-based diet, fortified plant-based milk alternatives like soya milk and almond milk are also available. The recommended daily intake of vitamin D varies depending on age and certain health conditions.

However, for most adults, the recommended intake is around 10 micrograms (mcg) per day1. It’s important to note that it can be challenging to get enough vitamin D from food alone, especially during the winter months when sunlight exposure is limited. In such cases, supplementation may be necessary after consulting with a healthcare professional.

A diet rich in vitamin D offers numerous benefits to your overall health. Not only does it support the absorption of calcium, promoting strong bones and teeth, but it also plays a vital role in maintaining a healthy immune system. Furthermore, vitamin D is thought to contribute to muscle function, cardiovascular health, and even mood regulation3.

The Long-Term Effects of Vitamin D Deficiency.

Vitamin D deficiency can lead to a range of potential complications, both in the short-term and long- term. This essential nutrient plays a crucial role in maintaining overall health and well-being, and its deficiency can lead to various adverse effects.

One of the most alarming long-term health risks associated with vitamin D deficiency is the increased risk of developing chronic conditions. Research suggests that low levels of vitamin D may be linked to an increased risk of cardiovascular diseases, including high blood pressure, heart disease, and stroke11.

Furthermore, vitamin D deficiency can have significant effects on both physical and mental health. In terms of physical health, it can weaken the immune system, making individuals more susceptible to infections and illnesses12. It can also impair bone health, leading to conditions like osteoporosis and increased risk of fractures10. On the mental health front, vitamin D deficiency has been linked to mood disorders like depression and anxiety3.

Given the potential complications associated with vitamin D deficiency, it is crucial to regularly monitor and maintain optimal vitamin D levels. Routine monitoring through blood tests can help identify deficiency early on and allow for appropriate interventions. With the guidance of healthcare professionals, individuals can optimise their vitamin D levels through sunlight exposure, dietary changes, and, if necessary, vitamin D supplementation.

Vitamin D testing at Randox Health.

At Randox Health, we believe the more you know, the more power you have. Vitamin D testing is included in our Discovery, Everyman/Everywoman and Signature packages.

You can also determine your risk of Vitamin D deficiency with our Nutrition and Lifestyle DNA test. This test is designed to help you explore the relationship between your diet, lifestyle and genetic makeup and ultimately make healthier lifestyle choices based on your DNA.

If you’re specifically worried about your Vitamin D levels, we offer Vitamin D without even having to leave your house. Our at-home Vitamin D test allows you to take your own sample with our easy-to-follow sample kit. You can then send this to us with the prepaid label and we’ll send your results to your phone within 2-3 days.

When it comes to improving your health, it’s never too soon to take action. Get the information you need to protect your future health, today. Visit to look at the range of tests we offer or check out more of our blog content here.

Reference List

  1. NHS. Vitamin D.
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  3. Sizar O, Khare S, Goyal A, Givler A. Vitamin D Deficiency. StatPearls Publishing; 2024.
  4. Department of Health and Social Care. New review launched into vitamin D intake to help tackle health disparities.
  5. Aksu Cerman A, Sarikaya Solak S, Kivanc Altunay I. Vitamin D deficiency in alopecia areata. British Journal of Dermatology. 2014;170(6):1299-1304. doi:10.1111/bjd.12980
  6. Rasheed H, Mahgoub D, Hegazy R, et al. Serum Ferritin and Vitamin D in Female Hair Loss: Do They Play a Role? Skin Pharmacol Physiol. 2013;26(2):101-107. doi:10.1159/000346698
  7. Akpınar Ş, Karadağ MG. Is Vitamin D Important in Anxiety or Depression? What Is the Truth? Curr Nutr Rep. 2022;11(4):675-681. doi:10.1007/s13668-022-00441-0
  8. Tavakolizadeh R, Ardalani M, Shariatpanahi G, Mojtahedi SY, Sayarifard A. Is There Any Relationship between Vitamin D Deficiency and Gross Motor Development in 12-Month-Old Children? Iran J Child Neurol. 2019;13(3):55-60.
  9. Kuraoka S, Oda M, Mitsubuchi H, Nakamura K, Katoh T. Impaired Height Growth Associated with Vitamin D Deficiency in Young Children from the Japan Environment and Children’s Study. Nutrients. 2022;14(16):3325. doi:10.3390/nu14163325
  10. National Institute for Health and Care Excellence. Vitamin D deficiency in adults.
  11. Judd SE, Tangpricha V. Vitamin D Deficiency and Risk for Cardiovascular Disease. Am J Med Sci. 2009;338(1):40-44. doi:10.1097/MAJ.0b013e3181aaee91
  12. Aranow C. Vitamin D and the immune system. J Investig Med. 2011;59(6):881-886. doi:10.2310/JIM.0b013e31821b8755