Which vitamin is synthesized in the human body?

The correct answer is Calciferol.

Key Points

• Calciferol, also known as Vitamin D, is synthesized in the human body when the skin is exposed to sunlight.
• This vitamin plays a crucial role in maintaining calcium and phosphate levels in the blood, which are important for healthy bone formation.
• Vitamin D synthesis begins in the skin and is then activated in the liver and kidneys.
• Sources of Vitamin D include exposure to sunlight, fortified foods, and dietary supplements.

Additional Information

• Vitamin D Deficiency:
  • A deficiency can lead to bone disorders such as rickets in children and osteomalacia in adults.
  • Symptoms include bone pain and muscle weakness.
  • Regular screening and maintaining adequate levels of Vitamin D are essential for bone health.
• Forms of Vitamin D:
  • There are two main forms: Vitamin D2 (ergocalciferol) and Vitamin D3 (cholecalciferol).
  • Vitamin D3 is the form produced in the human skin and is more effective in raising blood levels of Vitamin D.
• Recommended Daily Allowance (RDA):
  • The RDA for Vitamin D varies by age, with infants requiring about 400 IU, adults 600-800 IU, and higher doses recommended for the elderly.
  • Consultation with healthcare providers is advised for personalized dosage.
• Factors Affecting Synthesis:
  • Several factors like skin pigmentation, geographic location, and time of year can affect the synthesis of Vitamin D.
  • People with limited sun exposure may require dietary supplements to meet their Vitamin D needs.