Gillispie said his retirement is effective immediately.
"No one's ever enjoyed coaching more than I have, I promise, and no one's ever been luckier in the coaching profession than I have," Gillispie said. "What a wonderful career!
"I've been very sick with blood pressure issues since the summer, but I've tried to fight it out. I got a report Monday that told me if I didn't address this blood pressure situation immediately, irreversible, bad things were very likely to happen here relatively soon and my long-term health could be compromised.
"Timing isn't great, but I've decided to do what I was told and try to return to healthy ASAP."
http://www.cbssports.com/college-basketball/news/former-kentucky-coach-billy-gillispie-says-hes-retiring-citing-urgent-health-concerns/