Vitamin D deficiency, or hypovitaminosis D, is a vitamin D level that is below normal, most commonly occurring in people with inadequate exposure to sunlight, particularly ultraviolet B rays. It impairs bone mineralization, leading to bone-softening diseases such as rickets in children, and can also worsen osteomalacia and osteoporosis in adults, increasing fracture risk; muscle weakness is also a common symptom.
Facts
Classification
ICD-10 ChapterIV: Endocrine, Nutritional and Metabolic Diseases 1 Communicable or Non-communicable Transmission Route Causative Agent
Causative Agent (category) Sources
1. Wikipedia: ICD-10
WikipediaList of chapters, Chapter IVQuote, List of chapters, Chapter IV
Endocrine, nutritional and metabolic diseases
2. World Health Organization: Noncommunicable diseases (fact sheet)
World Health OrganizationMain Types sectionQuote, Main Types section
The main types of NCDs are cardiovascular diseases (such as heart attacks and stroke), cancers, chronic respiratory diseases (such as chronic obstructive pulmonary disease and asthma) and diabetes.
3. Wikipedia: Vitamin D deficiency
Wikipedialead sentence 1
Vitamin D deficiency or hypovitaminosis D is a vitamin D level that is below normal.
Lead section, transmission-route statement
Vitamin D deficiency can also be caused by inadequate nutritional intake of vitamin D; disorders that limit vitamin D absorption; and disorders that impair the conversion of vitamin D to active metabolites, including certain liver, kidney, and hereditary disorders.
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