The famous “Dr. Death” passed away early Friday at the age of 83.

The assisted-suicide advocate had been hospitalized in Michigan for pneumonia and a kidney-related ailment, his attorney has said.

The 83-year-old former pathologist had struggled with kidney problems for years and had checked into a hospital earlier this month for similar problems, his lawyer, Mayer Morganroth, told CNN last month. He checked back into Beaumont Hospital in the Detroit suburb of Royal Oak on May 18 after suffering a relapse, Morganroth said.

Kevorkian, dubbed “Dr. Death,” made national headlines as a supporter of physician-assisted suicide and “right-to-die” legislation. He was charged with murder numerous times through the 1990s for helping terminally ill patients take their own lives.

He was convicted on second-degree murder charges in 1999 stemming from the death of a patient who suffered from amyotrophic lateral sclerosis, commonly called Lou Gehrig’s disease. He was paroled in 2007.

After his release, he said he would not help end any more lives.

In an interview with CNN’s Dr. Sanjay Gupta last year, Kevorkian said he had no regrets about his work.

“No, no. It’s your purpose (as a) physician. How can you regret helping a suffering patient?” he said.

In that interview, Kevorkian said that he had three missions in life and that he himself was not ready to die.

One of his missions was to warn mankind of “impending doom” that will come from the culture of overabundance.

“I’m not going to be too popular for that one,” he said.

His second mission was to educate people about assisted suicide, and his belief that in states where assisted suicide has been legalized, it is not being done right. He believed that people shouldn’t have to be terminal in order to qualify for help in ending their own lives.

Kevorkian’s third stated mission was to convince Americans that their rights are being infringed upon by bans on everything from smoking to assisted suicide.

In case you didn’t know, Kevorkian had a failed run for Congress in Michigan back in 2008 at the age of 79.

The assisted suicide advocate is no longer able to lead people to the end of their lives. Attorney Morganroth said that Kevorkian died a “peaceful death.”

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