Neil Diamond has announced that he has been diagnosed with Parkinson's Disease. It's a disease that affects the nervous system. That diagnosis is the reason that Neil Diamond has announced his retirement from touring.

The effects of Parkinson's often cause difficulties with speech and can cause tremors throughout the body. After much consideration, Neil Diamond released this statement about his diagnosis and how it will affect his current world tour.

It is with great reluctance and disappointment that I announce my retirement from concert touring. I have been so honored to bring my shows to the public for the past 50 years.My sincerest apologies to everyone who purchased tickets and were planning to come to the upcoming shows.

Diamond and his 50 Year Anniversary World Tour were scheduled to play dates in Australia and New Zealand later this year. Those shows have been canceled and ticket refunds have been made available.

Diamond whose hits include Cracklin' Rosie, Sweet Caroline, and 51 other charting singles is scheduled to be honored by the Grammy Awards on Sunday. Diamond is expected to receive the Lifetime Achievement Award during those ceremonies.

Diamond is a Grammy winner having been nominated 13 different times. He has also sold more than 125 million records throughout his career. He is also a member of the Rock and Roll Hall of Fame having been inducted in 2011.

Diamond says via his website that while he does plan to retire from touring he will still write and record music.

My thanks goes out to my loyal and devoted audiences around the world. You will always have my appreciation for your support and encouragement.This ride has been 'so good, so good, so good' thanks to you.