Vitamin Deficiences

Articles about diseases and conditions caused by vitamin deficiencies. Topics include historical deficiency diseases and their modern prevention.

Beri Beri and Pellagra: Deficiency of Vitamins B1, B3

B1 and B3 vitamin deficiencies cause serious health problems like beri beri and pellagra, especially in people with poor diets or relying on processed foods.

Nightblindness and Xerophthalmia: Vitamin a Deficiency

Vitamin A deficiency causes nightblindness and xerophthalmia, affecting millions of children and vulnerable groups worldwide.