LOS ANGELES - Leonard Nimoy, the original "Spock" in the Star Trek first television series and subsequent movie franchise has been diagnosed with lung disease linked to smoking.
Nimoy, 82, tweeted to his fans Thursday, urging them to stop smoking.
"I quit smoking 30 years ago. Not soon enough," he tweeted. "I have COPD. Grandpa says, quit smoking now!! LLAP" (Live Long and Prosper).
Nimoy refers to himself as "grandpa" in his tweets to younger fans.
COPD IS chronic obstructive pulmonary disease, a lung disease the Surgeon General has concluded is linked to smoking.
"Smokers, please understand. If you quit after you're diagnosed with lung damage, it's too late. Grandpa says learn my lesson. Quit now. LLAP"
Nimoy tweeted to his 810,000 followers that he is "doing OK. I just can't walk distances."
COPD makes it hard to breathe. "Progressive" means the disease gets worse over time. COPD can cause coughing that produces large amounts of mucus (a slimy substance), wheezing, shortness of breath, chest tightness, and other symptoms, according to the National Heart, Lung and Blood Institute.