Here is a chronology of his health issues:
July 2004: Jobs announces he underwent surgery to remove a cancerous tumour through his pancreas. He said it was a rare form of pancreatic most cancers called an islet cell neuroendocrine tumour, which often is not quite as deadly since the more common forms of pancreatic cancer. The tumours can cause hormone unbalances.
June 2005: Jobs mentions the cancer in a commencement address at Stanford College.
"This was the closest I have been to facing death, and I hope it's the closest I get for a few more decades, " he says.
08:
June 9: Jobs appears dramatically thinner at an Apple iPhone event, coming in contact with off speculation the cancer had returned. The company said he was battling a "common bug" and taking antibiotics. Apple later called Jobs's health a personal matter.
July 26: The New York Times journalist Joe Nocera said inside a column he had spoken to Jobs about his health but because the actual conversation was off record, he could not disclose what was said.
"While his health problems amounted to more than 'a common bug', they were not life-threatening and he does not have access to a recurrence of cancer, " Nocera wrote.
Sept. 9: At an ipod device product launch, Jobs jokes about his health by walking on stage before a giant screen that flashed "The reports of my death are significantly exaggerated" -- a quotation borrowed from Mark Twain.
Oct. 3: A false internet report that Jobs had suffered a heart attack briefly pushes Apple shares down 2 percent to some 17-month low. Apple quickly denied the report on iReport. com, a resident journalist site owned by CNN.
Oct. 14: At a Mac product release event, Jobs jokes again about his health. His blood pressure was 110 more than 70 and he said, "And that is all we are going to become talking about Steve's health today. "
Dec. 16: Apple said Jobs wouldn't deliver the keynote address at the Macworld trade show in January, refreshing concerns about his health.
Asked to explain the decision, a spokesman said it might be the last time Apple takes part in Macworld so, "it does not make sense for us to create a major investment in a trade show we will no longer be going to. "
Dec. 30: Apple shares fall as much as 2% after Gizmodo said that Jobs's health was "rapidly declining" and that was the key reason why he cancelled the Macworld keynote.
2009:
Jan. 5: Jobs says he may be losing weight throughout 2008 and his doctors think a hormone imbalance is actually "robbing" him of proteins. He says he has begun a "relatively simple and straightforward" treatment for his nutritional problem which he will continue as CEO during recovery.
"I will be the first one to step up and tell our board of directors if I can't continue to fulfil my duties as Apple's CEO, " he says. Apple company shares rise 5 percent.
Jan. 14: Jobs announces medical leave until the finish of June, saying his health issues are "more complex" than originally believed.
He hands day-to-day operations to Chief Operating Officer Tim Cook and says he plans to stay involved in major strategic decisions. Apple shares fall 10 percent in after-hours buying and selling.
Jan. 21: The US Securities and Exchange Commission is examining Apple's disclosures about Jobs to make sure investors were not mislead, Bloomberg says.
June 8: Apple unveils new apple iphone at its annual Worldwide Developer's Conference, but Jobs does not make a good appearance.
June 20: The Wall Street Journal reports that Jobs had the liver transplant in Memphis, Tennessee about two months before and that he's expected to return to work later in June.
June 22: Jobs is spotted in the Apple campus in Cupertino, California, underscoring expectations that he is either back at the office or will return soon.
June 23: The Methodist University Hospital Transplant Institute confirms it performed a liver transplant on Jobs and says he's "recovering well and has an excellent prognosis. " The hospital does not give additional information, saying the confirmation had come with Jobs's permission.
Organ transplant recipients usually have recurring health issues for life, in part because they must take immune-suppressing drugs to avoid organ rejection or graft versus host disease.
June 30: Jobs returns to operate, an Apple spokesman says. adding that he will work from home the main time.
2011:
Jan 17: Jobs says he will take medical leave through Apple. Cook will take responsibility for day-to-day operations but Jobs will continue being chief executive and be involved in major strategic decisions.
"I love Apple so much and hope to be back the moment I can, " the 55-year-old says. Apple shares were down 8. 3 % in Frankfurt by 1503 GMT. Monday was a holiday in the Usa and markets were closed there.
March 2: A thin but energetic Jobs makes a surprise go back to the spotlight, taking the stage to unveil Apple's new iPad and sketching a standing ovation.
June 6: Animated but again looking very thin, Jobs appears at Apple's Worldwide Developers' Conference and unveils services for individuals to store more of their photos, music and other data online, giving the iPad and iPhone maker the lead inside a fast-expanding new consumer market.
Source : http://www.business-standard.com/india/news/timeline-key-dates-in-health-problemsapples-jobs/145268/on