Then, chronic obstructive pulmonary disease, or COPD, is the third leading cause of death worldwide according to the World Health Organization. On our Mayo Clinic Q&A segment, we'll hear from Dr. John Costello, a consultant pulmonologist at Mayo Clinic Healthcare in London, to learn treatment options and how COPD is diagnosed.

And, there's a critical shortage of plasma. We'll talk with John G. Boyle, a patient and advocate who relies on plasma-derived therapies and the former Immune Deficiency Foundation CEO and President, to learn the basics of plasma donation.