Home ยป Deficiency of which vitamin causes Beri-Beri? Vitamins MCQs Deficiency of which vitamin causes Beri-Beri? January 26, 2022 4 Views Q. Deficiency of which vitamin causes Beri-Beri? A. Vitamin B12 B. Vitamin B2 C. Vitamin B6 D. Vitamin B1 Answer: Vitamin B1