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Vitamin D can help support and contribute to the normal function of your immune system, which is incredibly important in the current climate.
Vitamin D also contributes to the maintenance of normal bones, normal muscle function and normal teeth. The vitamin contributes to the normal absorption/utilisation of calcium and phosphorous in the blood.
Vitamin D is also found in a small number of foods. Sources include;
If you choose to take vitamin D supplements, 10μg a day will be enough for most people.
People who take supplements are advised not to take more than 100μg of vitamin D a day, as it could be harmful (100 micrograms is equal to 0.1 milligrams).
This applies to adults, including pregnant and breastfeeding women and the elderly, and children aged 11 to 17. Some people have medical conditions that mean they may not be able to take as much vitamin D safely.
If in doubt, you should talk to your doctor. If your doctor has recommended you take a different amount of vitamin D, you should follow their advice.
Taking too many vitamin D supplements over a long period of time can cause too much calcium to build up in the body (hypercalcaemia). This can weaken the bones and damage the kidneys and the heart.