After months of speculation Apple CEO Steve Jobs has confirmed he has a hormone imbalance that is causing him to lose weight.

In a statement issued today, Jobs admitted he has been ill for a number of months.

"As many of you know, I have been losing weight throughout 2008. My doctors think they have found the cause - a hormone imbalance that has been 'robbing' me of the proteins my body needs to be healthy."

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However, despite his illness, Jobs has confirmed he will remain as CEO of the tech company. Apple's Board of Directors said Jobs has their "complete and unwavering support".

A statement from Apple's board was posted on the company site reiterating a previous statement: "if there ever comes a day when Steve wants to retire or for other reasons cannot continue to fulfill his duties as Apple's CEO, we will let you know".

See also: New Steve Jobs ill-health rumour sparks share drop