Lesson on Vitamin B12 Deficiency Causes, including dietary intake issues, medication use, gastrointestinal disease (ex. crohn’s disease, celiac disease), GI infections, pancreatic disease and autoimmune conditions (ex. pernicious...

Erythrocytes a.k.a. Red Blood Cells help us transport oxygen throughout the body. But what happens when they don’t work the way they should? Let's find out.