Thanks for the source, but I specifically wrote healthy subjects because I've never read a case about a healthy person doing ketosis that suffered from ketoacidosis. I think healthy would exclude starving, but reps for the source.
Now I'm quoting from Lyles book, but if you have anything updated, please share. "...In non diabetic individuals there are at least two feedback loops to prevent runaway ketoacidosis...when ketones reach high concentrations int he blood stream, they stimulate a release of insulin...First it slows ffa release from the fat cell. Second, by raising the insulin/glucagon ration, the rate of ketone body formation in the liver is decreased. Third, it increases the excretion of ketones into the urine"