Today Tim interviews to Dr. Johanna Hannan, an award-winning professor at East Carolina University's Brody School of Medicine. She studies the internal pudendal arteries (arteries that supply our genitals), and their impact on aging, cardiovascular disease, diabetes and obesity. They cover why it's difficult to gather clinical data, erectile issues caused by prostate cancer and why diet and exercise make such a big difference. Please note: Dr. Hannan discusses animal testing in her research.