Lifestyles Guide

Importance of Vitamin D

Vitamin D is a fat-soluble vitamin that plays an essential role in many bodily functions, including bone health, immune function, and cell growth. It is also a hormone precursor, which means that it is converted into a hormone that helps to regulate gene expression and cell signaling.

Vitamin D can be obtained from two main sources: sunlight and food. The skin produces vitamin D when it is exposed to ultraviolet B (UVB) rays from the sun. Vitamin D can also be found in a variety of foods, including fatty fish, eggs, and fortified milk and cereals.

Benefits of Vitamin D

Vitamin D is essential for a number of health benefits, including:

  • Strong bones and teeth: Vitamin D helps the body absorb calcium and phosphorus, which are essential for building and maintaining strong bones and teeth. A deficiency in vitamin D can lead to rickets in children and osteomalacia in adults.
  • Healthy immune system: Vitamin D helps to boost the immune system and fight off infection. People with low vitamin D levels are more likely to get sick, especially from respiratory infections.
  • Reduced risk of chronic diseases: Vitamin D may also help to reduce the risk of a number of chronic diseases, including heart disease, stroke, cancer, and diabetes.

Symptoms of Vitamin D Deficiency

The symptoms of vitamin D deficiency can vary depending on the severity of the deficiency. In mild cases, there may be no symptoms at all. In more severe cases, symptoms may include:

  • Fatigue
  • Muscle weakness
  • Bone pain
  • Slow wound healing
  • Frequent infections
  • Depression

How to Get Enough Vitamin D

The best way to get enough vitamin D is through exposure to sunlight. However, it is important to get sun exposure safely and to avoid sunburn. You can also get vitamin D from food and supplements.

Here are some tips for getting enough vitamin D:

  • Spend 10-15 minutes in the sun each day, without sunscreen, exposing your skin to UVB rays.
  • Eat foods that are rich in vitamin D, such as fatty fish, eggs, and fortified milk and cereals.
  • Take a vitamin D supplement if you are unable to get enough vitamin D from sunlight and food.

Recommended Daily Intake of Vitamin D

The recommended daily intake of vitamin D varies depending on age. The National Academy of Medicine (NAM) recommends the following daily intakes of vitamin D for different age groups:

  • Adults: 600 IU
  • Adults over 70: 800 IU
  • Pregnant and breastfeeding women: 600 IU
  • Infants and children: 400 IU


Vitamin D is an essential nutrient that plays a vital role in many bodily functions. Getting enough vitamin D is important for strong bones and teeth, a healthy immune system, and a reduced risk of chronic diseases.

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