Diet and Nutrition Data Verified

Vitamin D Deficiency

Published on Jan 16, 2019 and last reviewed on Oct 23, 2019   -  5 min read


When the level of vitamin D becomes too low in your body and affects your bone, it is known as vitamin D deficiency. Vitamin D actually functions as a hormone, so it is called pro-hormone, and all the cells in your body have a receptor for it.

Vitamin D Deficiency

Vitamin D Deficiency

When the level of vitamin D becomes too low in your body and affects your bone, it is known as vitamin D deficiency. Vitamin D actually functions as a hormone, so it is called pro-hormone, and all the cells in your body have a receptor for it. To understand the effects of vitamin D deficiency, we must first know the role played by this vitamin in maintaining our health.

How Is Vitamin D Helpful?

Vitamin D is a fat-soluble vitamin, which is required for the regulation of minerals like calcium and phosphorus in the body. It is also essential to maintain proper bone structure, as it helps in the absorption of calcium from the food in the intestines. If not, the calcium in our diet will be excreted through the kidneys. Recent researches show its role in maintaining the nervous, muscle, and immune systems also.

It also regulates cell growth and helps in cell-to-cell communication. The hormonally active form of vitamin D (calcitriol) has shown to slow the growth and development of new blood vessels in cancerous tissues. Thus it reduces the progression of cancer by increasing the rate of death of cancer cells and by preventing cell proliferation.

It influences more than 200 human genes. Recent researches have also associated the deficiency of this vitamin to increase the risk of hypertension, multiple sclerosis, cardiovascular disease, autism, asthma, and many other diseases. Lately, there is mounting evidence suggesting that pregnant women are at a higher risk of pre-eclampsia and premature labor if their vitamin D level is not optimum.

Sources of Vitamin D:

Our body cannot create other nutrients and vitamins, but our body can synthesize vitamin D on exposure to the sun. When the parts of your body are exposed to the sun, your skin makes vitamin D from cholesterol. Also, there are a few other natural sources of vitamin D available.

The other sources are:

Causes of Vitamin D Deficiency:

If your serum vitamin D level is less than 20 ng/mL, then you are at risk of developing vitamin D deficiency, and serum levels below 12 ng/mL indicate a deficiency. Scarcity occurs when you do not consume enough vitamin D or if your body is not able to absorb and metabolize the consumed vitamin.

Some of the risk factors and causes are as follows:

Symptoms of Vitamin D Deficiency

Thesymptoms you will commonly experience are:

Long-standing deficiency might lead to:

Vitamin D and Bone Disorders:

Vitamin D is said to be necessary for calcium absorption, hence its deficiency causes impaired calcium absorption which results in many bone disorders.


The softening and weakening of bones in children is called rickets. Calcium and phosphate are required for the healthy growth and mineralization of bones, and vitamin D is needed to regulate this calcium and phosphate balance. A lack of mineralization of the growth plate in children causes rickets. This mineralization defect can becalcipenic(hypocalcemic) orphosphopenic(hypophosphatemic) rickets. As vitamin D helps in the absorption of calcium from the gut, and vitamin D deficiency is the most prevalent cause of rickets than isolated calcium or phosphate deficiency.

Itcauses delayed growth, pain in the spine, pelvis, legs, and back, muscle weakness, bowed legs (knock knee), breastbone projection, and thickening of wrists and ankle bones. Children with long-standing vitamin D deficiency can cause an abnormally curved spine, skeletal deformities, dental defects, impaired growth, and seizures.


The softening of bones in adults or children due to problems with bone formation or the bone-building process causes osteomalacia. The most common cause of osteomalacia is vitamin D deficiency.

Thesoft weight-bearing bones can get bowed during growth. As the condition progresses, people experience bone pain and muscle weakness. Pain is commonly felt in the lower back, pelvis, hips, legs, and ribs.


Osteoporosis is a bone disorder that reduces the bone density making it more susceptible to fracture. Sometimes the bones become so brittle that mild forces like bending or coughing can cause fractures.

Patients with osteoporosis have back pain due to a fracture or collapsed vertebra, loss of height over time, stooped posture, and frequent bone fracture.


A 25-hydroxy vitamin D blood test measures the levels of vitamin D in your body. The normal range is 20 to 50 ng/mL. Anything less than 12 ng/mL indicates vitamin D deficiency.


There are three ways that you can increase your vitamin D levels:

Recommended intake of vitamin d

So, make sure that you get enough vitamin D from your diet, if not, then you can use supplements after consulting your doctor. If you fall under the high-risk category, it is better to check your vitamin D levels regularly, as its deficiency causes many chronic bone disorders. To lead a healthy life, do some physical activity daily and eat healthily!


Frequently Asked Questions


Which Fruit Is High in Vitamin D?

There are no fruits that have a high vitamin D content in them, and fortified orange juice is the only fruit product that is readily available and sold with vitamin D currently. Instead, you can try egg, cheese, and other dairy products.


Does Vitamin D Reduce Belly Fat?

Research has proven that vitamin D deficiency could cause weight gain issues, which results in excess belly fat. Many studies investigated the effects of vitamin D on a person's weight loss and gain. Those studies suggested that vitamin D could decrease fat cells' storage, and that can result in an effective reduction of fat accumulation in the body.


Can Vitamin D Deficiency Cause Stomach to Bloat?

Problems that affect a person's digestive tract can cause incomplete absorption of Vitamin D in the gastrointestinal tract. So if a person experiences symptoms such as chronic gas, abdominal bloating, and constipation or conditions like "irritable bowel" syndrome, that person should get his or her vitamin D levels checked.


Which Vegetable Is High in Vitamin D?

Practically, there are no vegetables that are rich in vitamin D. You can get vitamin D from other sources. They are:
- Cow's milk.
- Orange juice.
- Various breakfast cereals.
- Spinach.
- Egg yolk.


Does Vitamin D Help You Sleep?

Research states that vitamin D levels are capable of affecting sleep quality in people. Also, several studies state that low levels of vitamin D in a person's blood put them at a higher risk of experiencing sleep disturbances, poor sleep quality, and reduced sleep duration.


Why Does My Child Have Low Vitamin D?

Children who have medical conditions that affect the body's nature of absorbing and controlling vitamin D, like any liver disease, kidney disease, or problems with the absorption of food such as cystic fibrosis can have low levels of vitamin D. The celiac disease, inflammatory bowel disease, and certain anti-epileptic medicines can lower the level of vitamin D.


What Is Vitamin D Deficiency in Children Called?

The presence of deficient vitamin D levels can cause soft bones, which leads to a condition known as rickets in children. At the same time, low vitamin D levels are called osteomalacia in young adolescents and adults.


What Conditions Result in Vitamin D Deficiency in Children?

Most of the people who are affected by low vitamin D levels usually do not have any symptoms. However, some children who have low vitamin D levels complain of bone and muscle pain. A deficient vitamin D level can cause softness in bones and rickets in children.


What Are the Symptoms of Vitamin D Deficiency in Adults?

The signs and symptoms experienced by adults having low vitamin D levels include:
- Fatigue.
- Bone pain.
- Muscle weakness with associated muscle aches, or muscle cramps.
- Mood swings and depression.


How Can I Raise My Vitamin D Level Quickly?

You can increase your Vitamin D levels very quickly by the methods mentioned below.
- Spend adequate time in sunlight since it is the popularly known "the sunshine vitamin."
- Consume the right amount of fatty fish and seafood.
- Eat more mushrooms.
- Increase the consumption of egg yolks in your diet.
- Eat fortified food products.
- Take a vitamin D supplement as prescribed by a doctor.


What Is a Normal Vitamin D Level for a Woman?

A level of at least 20 to 50 ng/mL of vitamin D is considered adequate for healthy people. A level of vitamin D that is less than 12 ng/mL is significant for vitamin D deficiency.


Can You Check Vitamin D Levels at Home?

Yes, it is possible to measure your vitamin D levels and compare them with healthy ranges. This is known as the at-home test that can be used to ensure that you have sufficient vitamin D levels that are needed to maintain bone and cellular health.


How Do I Know If I Am Low on Vitamin D?

You might experience symptoms if you are affected by vitamin D deficiency, including muscle weakness, muscle pain, fatigue, and depression-related mood disorders.


Is Vitamin D Deficiency Serious?

Yes, vitamin D deficiency is serious as it can cause a loss of bone density, contributing to osteoporosis and frequent fractures. Vitamin D deficiency can also lead to other secondary conditions in severe cases. In children, it can cause a severe but rare medical condition known as rickets.


Can Vitamin D Deficiency Affect Mood?

Vitamin D deficiency is often related to an increased risk of getting affected with depression. Low levels of vitamin D might also lead to poorly regulated moods and behaviors and impair the brain's cognitive function.


How Long Does It Take to Recover From Vitamin D Deficiency?

The dosage for vitamin D will be given based on your age. The causes of reduced levels of vitamin D should be considered. After six to eight weeks of treatment procedure for vitamin D, the dosage of vitamin D will be reduced. After this stage of treatment, you can continue on the low dosage of vitamin D.


What Happens If Your Vitamin D Is Too Low?

Vitamin D is a component that is essential for the proper functioning of the bones. Bones are necessary for regular activities like walking, running, picking up an object. If the level of vitamin D is low, then there are chances for bone fractures and other bone problems like osteoporosis. In children, it can cause diseases like rickets. Rickets causes softening of the bones and leads to bending in severe patients.


How Can I Increase My Vitamin D Level?

Vitamin D can be increased in the following ways. They are:
-Sunlight is an important source of vitamin D. Spend more time outdoors so that you will receive more sunlight naturally.
- Consume mushrooms in higher quantities.
- Eat fatty fish and other seafood like prawns and oysters.
- Eat foods that are fortified.
- Take egg yolks every day.


Can Lack of Vitamin D Cause Weight Gain?

Researches show that vitamin D deficiency can have a significant influence on weight gain. Vitamin D should be at an adequate level to maintain a healthy weight. However, there might be other reasons for your weight gain. Identifying that would be the first step for formulating a treatment plan. If vitamin D deficiency is the only reason for your weight gain, you should immediately consult your doctor.

Last reviewed at:
23 Oct 2019  -  5 min read




Related Questions & Answers

Cancerous Conditions Related to the Eye

Article Overview: Cancer is a leading cause of mortality and morbidity in the developed world and is on the rise among all age groups and social strata. The eye is also not spared from cancerous afflictions and has a whole plethora of cancerous and precancerous conditions that require proper evaluation and care by ophthalmologists. This article looks at the main cancers of the eye and has been written to be a basic guide to the common man about what important symptoms s/he will need to be concerned about and those problems that would need an immediate consultation with an ophthalmologist. Read Article

Manjunath Natarajan
Manjunath Natarajan
Ophthalmology (Eye Care)

Cancer is a leading cause of mortality and morbidity in the developed world and is on the rise amongst all age groups and social strata. The eye is also not spared from cancerous afflictions and has a whole plethora of cancerous and precancerous conditions that require proper evaluation and care by ...  Read Article

Ayurvedic Approach to Osteoporosis

Article Overview: In osteoporosis, the bones become weak and brittle, and even minor injury leads to fracture. Anyone can develop osteoporosis, but it is more prevalent in women over 50 years of age.  Read Article

Revathi Sundaramurthy
Revathi Sundaramurthy
Ayurveda Specialist

What Is Osteoporosis? Osteoporosis is a degenerative bone disorder. It develops slowly over the years and is often diagnosed when a fall or sudden impact causes a bone to break (fracture). In this disorder, the density of bone is decreased, leading to bone weakness and fractures. What Causes Osteopo...  Read Article

Cervical Cancer - Causes and Prevention

Article Overview: Estimates suggest that by 2025 more than 365 women will die due to cervical cancer every day. Cervical cancer is usually caused by HPV (Human Papillomavirus) and will mainly affect young women.  Read Article

Kamalpreet Kaur Nagpal
Kamalpreet Kaur Nagpal
Obstetrics And Gynaecology

Trivia: Cervical cancer is the second largest cancer affecting women's health. What Is Cervical Cancer? Cervical cancer is a type of cancer that begins in the cells in the cervix, present in the lower part of the uterus (womb). The cervix connects the uterus's body (the upper part where a fetus g...  Read Article

Popular Articles Most Popular Articles

Do you have a question on Osteoporosis or Calcium Deficiency?

Ask an expert Online

* guaranteed answer within 4 hours.

Disclaimer: Wellness medicine is not aimed to replace the services of your treating physician or allopathy medicines. Our site's information is to those who are willing to take responsibility for their health, being fully aware that the content published herein would not qualify as a prescription or specific medical advice. If users use the information and stop prescribed medication without their physician's consent, they bear full responsibility for their actions, and iCliniq-Wellness bears no responsibility for the same. Information on Wellness medicine should not be misinterpreted as a cure for any illness, as our body is complex and everyone reacts differently.

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.