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Which Vitamin Deficiency Is Most Common Worldwide?

healthscience

Quick Answer

Vitamin D deficiency affects an estimated 1 billion people globally.

The Full Story

Vitamin D deficiency is the most widespread vitamin deficiency in the world, affecting an estimated 1 billion people across all age groups and regions. The body produces vitamin D when skin is exposed to sunlight, but indoor lifestyles, high latitudes, darker skin pigmentation, and sunscreen use reduce production. Deficiency can lead to rickets in children, osteomalacia in adults, and increased risks of various chronic diseases. Iron deficiency (causing anaemia) is the most common nutritional deficiency overall, affecting about 2 billion people.

Key Facts

1.About 40 % of European adults are vitamin D deficient.
2.Very few foods naturally contain vitamin D — oily fish, egg yolks, and fortified products are the main dietary sources.
3.Vitamin D is technically a hormone precursor, not a true vitamin.

YouTube Angle

Suggested video title for this topic:

"The Sunshine Vitamin — Why a Billion People Are Deficient"

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