How Do You Become Deficient in Vitamin B1 (Thiamine)?

Google Review: Take Dr. Berg’s Free Keto Mini-Course: or go here: SULFITES: In this video, Dr. Berg answers the question on how do you become deficient in Vitamin B1. He also talks about the different causes of Vitamin B1 Deficiency. Causes of Vitamin B1 Deficiency: • Refined Grains • Alcohol • Liver Damage • Stress • Metformin • Sugar • Tea – Tannic Acid • Raw Fish •