1. A form of vitamin D produced in the skin when exposed to sunlight or obtained from animal-based foods; used by the body to regulate calcium absorption and bone health.
Usage: Also called vitamin D3; Technical/medical term; Commonly used in nutrition and healthcare contexts

Examples

• Cholecalciferol is synthesized in human skin in response to ultraviolet B radiation from the sun.
• Many multivitamins contain cholecalciferol to support bone strength and calcium metabolism.
• Fatty fish like salmon and mackerel are rich sources of cholecalciferol.
• Doctors may prescribe cholecalciferol supplements to patients with vitamin D deficiency.
• The body converts cholecalciferol into its active form in the liver and kidneys.
• Cholecalciferol plays a crucial role in immune system function and cell growth.