Leonard Nimoy gestures on arrival for the Los Angeles premiere of the movie 'Star Trek Into Darkness" in Hollywood, California on May 14, 2013 Frederic J. Brown—AFP/Getty Images

Leonard Nimoy Tells Fans to Quit Smoking After Lung Disease Diagnosis

Feb 06, 2014

Star Trek's original Spock, Leonard Nimoy, tweeted Thursday that fans should stop smoking now. Nimoy revealed that he has COPD on Jan. 29 after worried fans asked about a photo taken of him in which he's in a wheelchair wearing an oxygen mask.

COPD is a chronic respiratory disease caused by smoking that has no cure. Since opening up about his disease, Nimoy has encouraged followers on social media to stop smoking as soon as possible so as not to suffer the consequences later.

Nimoy ends all of his tweets with "LLAP" or "live long and prosper," his character's catchphrase from the Star Trek series.

All products and services featured are based solely on editorial selection. TIME may receive compensation for some links to products and services on this website.