Vitamin D Deficiency: 6 Common Signs That Are Easy To Miss

Vitamin D is vital for regulating the levels of phosphate and calcium in the body.

Vitamin D is vital for regulating the levels of phosphate and calcium in the body.

It is easy to miss the signs of a vitamin D deficiency as it tends not to cause any serious illness.

However, there are certain subtle signs that can indicate a deficiency in what is known as the ‘sunshine vitamin’.

A vitamin D deficiency can cause weight gain and weak muscles.

It has also been linked to developing bone pain or feeling generally fatigued.

Some people experience mood changes or persistent cramps.

Problems with the teeth may be linked to a vitamin D deficiency as well, since vitamin D is important for dental health.

However, all of these symptoms are general and could be related to other conditions.

That is why, if you are worried, it is important to get checked out by a healthcare provider.

Vitamin D is vital for regulating the levels of phosphate and calcium in the body.

These are essential to the bones, teeth and muscles.

Since vitamin D is naturally produced by the action of the sun on the skin, it is vital that people get enough vitamin D in the winter months.

During the darker months, taking 10 mcg of a vitamin D supplement is often recommended.

Another option is to ensure that your diet has enough vitamin D in it.

Foods that contain relatively high amounts of vitamin D include sardines, salmon, mackerel and herring.

Other foods high in vitamin D include egg yolks, liver, mushrooms and red meat.

Cereals and spreads are also typically fortified with vitamin D.

Vitamin D and immunity

Many studies have linked to vitamin D levels to immune function.

Some have suggested that having enough vitamin D can help to boost immunity against upper respiratory tract infections, of which COVID is one.

People with a vitamin D deficiency are also thought to be more susceptible to other everyday viruses, like common colds.


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This site is all about scientific research into how the mind works.

It’s mostly written by psychologist and author, Dr Jeremy Dean.

I try to dig up fascinating studies that tell us something about what it means to be human.

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Author: Jeremy Dean

Psychologist, Jeremy Dean, PhD is the founder and author of PsyBlog. He holds a doctorate in psychology from University College London and two other advanced degrees in psychology. He has been writing about scientific research on PsyBlog since 2004. He is also the author of the book "Making Habits, Breaking Habits" (Da Capo, 2013) and several ebooks.