Actor Leonard Nimoy, best-known as the iconic Mr. Spock of "Star Trek," died Friday at the age of 83.
Nimoy's wife, Susan Bay Nimoy, said his cause of death was end-stage chronic obstructive pulmonary disease. Nimoy himself thought the disease was brought on by his smoking habit, which he had quit roughly 30 years ago.
He tweeted a little more than a year ago about his diagnosis with the disease.
He used the diagnosis as an opportunity to warn others about the long-term dangers of smoking.
And just last month, Nimoy again tweeted his regret over smoking, signing off his message with his trademark "LLAP" or "live long and prosper."
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