Dr Cameron had been suspended for alleged gross misconduct when he resigned.
Allegations
The FSA refused to comment on reports that this suspension followed an alleged "serious" claim made by a junior female employee relating to an incident in May.
A spokesman told FoodManufacture.co.uk that the FSA did not plan to make any further updates on the case or comments on whether it was continuing to investigate any matters arising from it, further to its statement on September 1.
The statement said: "The Food Standards Agency has confirmed that Dr David Cameron has tendered his resignation to the Scottish minister for public health, Michael Matheson, as a member of the FSA board and chair of the Scottish Food Advisory Committee. Dr Cameron's resignation has been accepted."
Suspension
The case came to light in August when newspaper the Aberdeen Press & Journal obtained a copy of a letter said to be from Lord Jeff Rooker, FSA chairman, to David Cameron informing him of the suspension.
How the Press & Journal obtained a copy of the letter was subject to a leak inquiry, the FSA said in August.
Lord Rooker told Dr Cameron in his suspension letter: "The finding of the investigation is unequivocal in its conclusion: that your behaviour has constituted gross misconduct. I accept that conclusion. I have decided to seek your removal from the FSA board… on the basis that by your actions you are unfit to carry out your duties."
Cameron was unavailable for comment.