By Dr Venkatachalam
Consultant Physician & DiabetologistPublished on: 26 May 2021
Article Context:
- What is Vitamin D3?
- Benefits
- Vitamin D3 Deficiency
- How to take Vitamin D3?
- When to visit a Doctor?
- Frequently Asked Questions
What is Vitamin D3?

- Maintain the health of bones and teeth
- Support the immune system, brain, and nervous system
- Regulate insulin levels and diabetes management
- Helpful in lung functioning and cardiovascular health
- Influence the growth of genes involved in cancer development
Health Benefits of Vitamin D3
- Vitamin D has been shown to benefit both muscles and bones. It improves calcium absorption in the small intestine. If you don't get enough vitamin D, your body will extract calcium from your bones to absorb it. This weakens the bones and increases the risk of fractures and osteoporosis.
- Vitamin D has been demonstrated to protect against acute respiratory infections and pneumonia in studies. During the COVID-19 pandemic, preliminary research suggested that vitamin D deficiency may increase the likelihood of infection as well as severe disease.
- Obesity and high blood pressure have been linked to reduced vitamin D levels, according to research. According to some studies, vitamins can help decrease blood pressure. Although some researchers have found that those with higher vitamin D levels have a higher risk of stroke and heart attack, clinical trials have not proved that supplementing with vitamin D reduces the risk.
- Women with adequate vitamin D3 levels reduced more body fat, had a smaller waist circumference, and dropped more weight.
- It is helpful to Reduce Risks of Flu
- Vitamin D3 deficiency in children can cause rickets. In adults, vitamin D deficiency manifests as osteomalacia or osteoporosis.
- Studies have shown a reverse relationship between blood concentrations of vitamin D3 in the body and the risk of type 2 diabetes.
- Vitamin D3 is helpful for infants to become healthy. The deficiency has been associated with a higher risk and severity of childhood diseases and allergic diseases, asthma, atopic dermatitis.
- Pregnant women with the deficiency seem to be at greater risk of developing preeclampsia and needing a cesarean section. Also, this deficiency is associated with gestational diabetes mellitus and bacterial vaginosis in pregnant women.
- It is beneficial for Cancer Prevention. Vitamin D3 is extremely important for regulating cell growth and for cell-to-cell communication. Vitamin D3 helps reduce cancer progression by slowing the growth and development of new blood vessels in cancerous tissue, increasing cancer cell death, and by reducing cell proliferation and metastases.
Deficiency of Vitamin D3

- Muscle weakness and aches
- Weak bones
- Fatigue
- Hair loss
- Depression
- Hypertension
- Inflammation
- Arthritis
- Eczema
How To Take Vitamin D3?
When To Visit a Doctor?
Reference link:
- https://www.health.harvard.edu/staying-healthy/taking-too-much-vitamin-d-can-cloud-its-benefits-and-create-health-risks
- https://www.inverse.com/science/vitamin-d-supplmentation
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5537772/
Frequently Asked Questions:
Vitamin D is a 'fat-soluble' vitamin, which means that your body can store it for months and that you don't need it every day. That means a daily dosage of 20 micrograms or a monthly supplement of 500 micrograms would be equally safe.
In the human body, there are two types of vitamin D: vitamin D2 and vitamin D3. There is no visible difference between D2 and D3 because they are both referred to as "vitamin D."
It aids in the absorption of calcium, which is necessary for bone health and strength. It also aids in the maintenance of a healthy brain, heart, teeth, and lungs. Vitamin D helps manage insulin levels and maintains your immune system robust. It boosts your energy levels while also improving your mood.