There was evidence that Mays had hypertensive heart disease and hardening of the arteries, Hillsborough County Medical Examiner Vernard Adams has reported. Hypertension, or high blood pressure, appears to have been the cause and it appears that any minor head trauma he might have suffered as a result of the plane incident he was involved with had nothing to do with it. He had just returned from shooting an OxyClean commercial, the product which got many to shell out fast cash and catapulted the pitchman to national attention. Many got payday loans for his products, and would like to know what the Billy Mays cause of death was for sure.