Vitamin D is critical to the overall health of the body as it helps maintain healthy muscles, bones and teeth, says the NHS. Vitamin is needed to regulate the amount of calcium and phosphate in the body. Lack of vitamin D can lead to serious complications, including osteomalacia, rickets or some deformities. You may be at risk of vitamin D deficiency if you are constantly feeling tired and exhausted.
Fatigue or fatigue can be caused by the lack of enough vitamin D in your diet, according to a nutritionist Dr Steven Lynn.
It can be caused by a defect in the calcium absorption process that is associated with vitamin D.
The defect may also result in bone failure – one of the earliest signs of a deficiency.
But you may also be at risk of this condition if you often have a sweating head, added Holland and Barrett.
For this reason, newborn babies are often seen to sweat the head.
Lynn said: "Vitamin D deficiency is the most common and easiest indicator of your health that you should be aware of.
– Since it is quite difficult to take too much vitamin D, I would say it is safe to assume that you would probably use a little more vitamin D in your life.
"I can not say that enough: vitamin D is vital to your teeth health and your overall health.
"Because vitamin D is an integral part of the health of your immune system, some of the first symptoms of low levels of vitamin D are generally unwell and become easily sick.
– Keep in mind that some people have a higher risk of vitamin D deficiency than others.
The most vulnerable to vitamin D deficiency are elderly people, obese people and those who rarely go outside.
Everyone should aim at between 8.5 and 10mcg of vitamin D in a day, the NHS said.
But in the autumn and winter months, the sun is not strong enough for your body to produce vitamin D.
Therefore, it is recommended that everyone should take vitamin D supplementation during these months to increase their diet.
A 10mcg supplement should be enough to help you avoid the symptoms of vitamin D deficiency.
Talk to a doctor if you are worried about the signs or symptoms of vitamin D deficiency.