The ICMR-NIN 2020 revised RDA for vitamin D (cholecalciferol) for adults in India is:

• A 600 IU/day (15 μg/day)
• B 400 IU/day (10 μg/day) ✓
• C 800 IU/day (20 μg/day)
• D 200 IU/day (5 μg/day)

Explanation

The ICMR-NIN Recommended Dietary Allowance (2020 revision) for vitamin D for adults in India is 400 IU/day (equivalent to 10 μg/day of cholecalciferol). India retains a lower RDA than Western countries (which use 600 IU) partly because of abundant sunlight exposure. The tolerable upper intake level is 2000 IU/day. Despite adequate sunlight potential, widespread vitamin D deficiency exists due to indoor lifestyles, dark skin pigmentation reducing synthesis, and dietary insufficiency.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.