Multiple choice general knowledge science & technology Beriberi is due to the deficiency of which vitamine? B5 B6 B2 B1 Reveal answer Fill a bubble to check yourself D Correct answer Explanation Beriberi is a condition caused by thiamine (Vitamin B1) deficiency, affecting the cardiovascular and nervous systems. It became common in populations whose diet consisted mainly of polished rice, which lacks the B1-rich bran layer.