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.
Treatment includes stopping vitamin D intake and restricting dietary calcium, according to the organisation. Research published in the National Library of Medicine notes that the clinical symptoms for vitamin D toxicity are manifested from the effects of hypercalcemia.
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