Originally posted on  https://genesisfoods.co/blog/a-fundamental-breakdown-vitamin-d.

INTRODUCTION

Continuing on with our nutrition series, today marks our article on vitamin D. As in previous articles, we will be discussing its role in the body, its recommended intake level given by various regions and the Upper Tolerable Limit, what symptoms may occur if you are getting too little (a deficiency) or too much (a toxicity), as well as the forms and amount we use in our products.

As with previous posts, these will be displayed as a brief, bolded statement which gives the basic information, followed by a more complex, unbolded explanation.

ROLE OF VITAMIN D

Vitamin D is involved in turning gene expression on and off when it binds to them. It is also a key component of maintaining good bone health, and also has an anti-cancer effect, as well as providing support to the immune system. It is also known to reduce rates of depression.

After vitamin D is consumed, it is metabolised in order to convert it into its active form in the body. This active form is called calcitriol, and it is converted to this form in the kidneys from its storage form, calcidiol (which is itself produced in the liver. Calcitriol circulates around the body, and is able to bind to vitamin D receptors…

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