Jobs taking medical leave

SEATTLE — Apple Inc. co-founder and Chief Executive Steve Jobs said Wednesday he is taking a medical leave until June, even though just a week ago the cancer survivor tried to assure investors and employees his recent weight loss was caused by an easily treatable hormone deficiency.

Apple's stock dropped nearly 7 percent.

Jobs, 53, said in a letter last week that he would remain at Apple's helm despite the hormone problem and that he had already begun a "relatively simple and straightforward" treatment. But in an e-mail to employees Wednesday, Jobs backtracked.

"During the past week I have learned that my health-related issues are more complex than I originally thought," he wrote.

Apple's shares have surged and crashed over the past year in step with rumors or news about the CEO's health and his gaunt appearance. While the top executive's health is an issue for investors in any company, at Apple the level of concern reaches fever pitch because Jobs has a hand in everything from ideas for new products to the way they're marketed.

Jobs co-founded Apple with Steve Wozniak in 1976 at the dawn of the personal computer revolution. He was forced from the company in 1985 but returned as CEO in 1997, slashing unprofitable products and helping rescue the company from financial ruin.

Since then, under Jobs' demanding leadership, Apple has churned out a string of sleek gadgets, from the iMac and the iPod to a new line of aluminum-covered Macbooks and the coveted iPhone. Many investors fear that without Jobs, Apple would not be able to sustain its growth or its high-end minimalist style.

Last week, Jobs said his disclosure of his hormone problem was "more than I wanted to say, and all that I am going to say" about his health. It came on the eve of Macworld, the biggest Apple trade show of the year, and Jobs said he wanted everyone to relax and enjoy the event.

Even so, the limited amount of information in that announcement did little to soothe Wall Street's nerves. Medical experts not involved in Jobs' treatment said it was unclear what was behind his weight loss, but some specialists said Jobs' past pancreatic cancer could be the problem.