Using the theories of vitamins, we got an individual with vitamin d deficiency will experience rickets.
Vitamin D deficiency or hypovitaminosis D is the vitamin D level that is below normal. It most commonly occurs in the people when they have inadequate exposure to sunlight, particularly the sunlight with adequate ultraviolet B rays (UVB). Vitamin D deficiency can also be caused by the  inadequate nutritional intake of vitamin D; disorders that actually limit vitamin D absorption; and disorders that impair conversion of vitamin D to active metabolites, including certain liver, kidney etc.
Hence, an individual with vitamin d deficiency will experience the disease of rickets.
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