Vitamin B12 deficiency is a common health problem that can have serious consequences – but doctors often overlook it
- Written by Diane Cress, Associate Professor of Nutrition and Food Science, Wayne State University

For several months during the summer of 2022, my dog Scout vomited at 3 a.m. nearly every day. If you have a dog, you know the sound. And each time, she gobbled up her mess before I could get to it, making diagnosis of the cause difficult.
The vet and I eventually...