Take a breath and breathe out. What you just exhaled is the subject of this podcast. It is a story of over 140 thousand molecules and what we are learning about them and what a single breath might tell us about our health. Dr. Biology catches up with bioanalytical chemist Heather Bean. The two explore the world of metabolomes and metabolites, what they are, how we use them today and the future for these molecules when it comes to diagnosing and treating diseases.