Vitamin D3

Vitamin D3 (calcitriol) is simply the active form of vitamin D that we can use in the body. We get vitamin D (calciferol) from t... Vitamin D3 (calcitriol) is simply the active form of vitamin D that we can use in the body. We get vitamin D (calciferol) from the sun and a small number of foods, however, we must first convert it in the body to vitamin D3.

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What is vitamin D?

Winter is coming! Get prepared for the cold and dark days with our high-potency vitamin D! This is a powerful nutrient that we get from the sun and a small number of foods.

Coming into the winter months, it is especially important to ensure you are getting your daily needs vitamin D, as it has many roles in the body!

Vitamin D is an important nutrient that supports calcium absorption, tooth and bone health, immune, muscle and cell function.

Vitamin D contributes to:
  • The normal function of the immune system
  • The maintenance of normal bones and teeth
  • The maintenance of normal muscle function

What is the difference between vitamin D and vitamin D3?

Vitamin D is also known as calciferol and it is a fat-soluble vitamin that comes primarily from the sun, but also some foods and is added to others. However, this form is not biologically active and our bodies need to convert it to the form we can use. This form is known as vitamin D3 (1,25-dihydroxy vitamin D) or calcitriol (Source: NIH). It is best to get a vitamin D3 supplement to ensure that it will be efficiently used in the body. 

Is vitamin D safe?

Vitamin D is completely safe and is a naturally-occurring vitamin that we require in for survival. Those who do not spend enough time outdoors are recommended to use a supplement as it is likely they do not get enough of the vitamin. 

Where can I get vitamin D?

Vitamin D is known as the sunshine vitamin because we absorb it from the sun. However, there are also some foods that contain small amounts of vitamin D such as fatty fish, fish oils, beef liver, dairy and egg yolks (Source: NIH). There are also fortified foods with added vitamin D such as cereals, milk, plant-based milk some yoghurts and juices. 

Key health aspects vitamin D?

Vitamin D is one of the most-commonly under-consumed nutrients. This is important because it is crucial for a range of functions in the body. For this reason, there has been a myriad of studies conducted examining the impact of balancing vitamin D. 

Bone health

Vitamin D facilitates the absorption of both calcium and phosphorous by bones, which ensures that bone turnover does not exceed buildup (remodelling). When this happens our bone strength diminishes and they get weaker. This can eventually increase the risk of osteoarthritis and osteoporosis. In addition to bone, because calcium is also important for tooth mineralization. 

Immune function

Every cell in our body contains the receptor for vitamin D! Yep, you heard that right. This includes the immune cells and in fact, the sunshine vitamin has been shown to support an optimal-functioning immune system. So much so, that it has been approved as an official health claim. 

Muscle function

Outside of bone, teeth and immune function, vitamin D is also believed to play a role in supporting muscle function. This was first discovered in studies that linked muscle wasting (myopathy) to vitamin D deficiency (Source: NCBI). The cellular mechanisms are not well defined, however, it is believed to be linked to the vitamin D receptors in skeletal muscle tissue.