Exposure to sunlight, vitamin D and its benefits

Exposure to sunlight is the most important source of vitamin D, which is essential for the proper functioning of our body, especially for bone health. Vitamin D plays a crucial role in calcium absorption and bone metabolism, making it necessary for maintaining healthy bones and preventing bone-related disorders.

Sunlight and Vitamin D

When our skin is exposed to sunlight, it triggers the production of vitamin D in our body. The ultraviolet B (UVB) rays from the sun interact with a specific type of cholesterol in our skin, converting it into vitamin D3, which is then transported to the liver and kidneys, where it is converted into its active form, known as calcitriol. This active form of vitamin D helps in the absorption of calcium from the intestine and its deposition in bones, making them stronger and healthier.

Research has shown that exposure to sunlight is particularly important for people with low levels of vitamin D, such as the elderly, pregnant women, and people with darker skin tones. Inadequate exposure to sunlight and low levels of vitamin D can lead to a variety of bone-related disorders, including osteoporosis, rickets, and osteomalacia.

Exposure to sunlight and Osteoporosis

Osteoporosis is a common condition that affects mostly older adults, especially women, and is characterized by weakened bones that are more susceptible to fractures. Studies have shown that vitamin D supplementation can reduce the risk of osteoporosis and fractures by improving bone density and strength.

Vitamin D and Rickets

Rickets is a rare condition that primarily affects children and is caused by a deficiency of vitamin D, calcium, or phosphate. The lack of vitamin D in the body leads to improper bone growth and development, resulting in weakened bones that are prone to fractures.


Vitamin D and Osteomalacia

Osteomalacia is another bone disorder that results from a deficiency of vitamin D, causing weak bones and muscle weakness. It is more common in older adults and people with conditions that affect vitamin D absorption, such as celiac disease and inflammatory bowel disease.

In addition to its role in bone health, vitamin D has been linked to a range of other health benefits, including immune system function, heart health, and cancer prevention.

What if you are excessively exposed to sunlight?

Excessive exposure to sunlight can also have adverse effects, such as skin damage and an increased risk of skin cancer. Therefore, it is important to balance sun exposure with proper skin protection, such as wearing sunscreen and protective clothing.


A 360-degree Overview

Exposure to sunlight is a crucial source of vitamin D, which plays a vital role in bone health and overall wellbeing. Adequate sun exposure, along with a balanced diet and vitamin D supplements if necessary, can help prevent bone-related disorders and maintain healthy bones throughout life.



(The content of this article is for informational purpose only. It cannot be a substitute for advice from a medical practitioner. Read DISCLAIMER for more…)