NHS explains that vitamin D helps regulate the amount of calcium and phosphate in the body, and these nutrients are needed to keep bones, teeth and muscles healthy.
Research suggests that there can be a number of signs in people who are vitamin D deficient. There can also be issues with taking too much vitamin D.
The NHS says if you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people. The Mayo Clinic explains the main consequence of vitamin D toxicity is a build-up of calcium in your blood, known as hypercalcemia.Read more on msn.com