Adding another type of warning. Someone became ill on another support group, turned out she was dehydrated.

There are surprising reasons for Blood Sugar swings, high and low, and Dehydration is one. If you are starting a LC diet which is dehydrating by itself, and/or add fasting, be sure you are taking enough water, especially if your sense of thirst isn't reliable.

Here is a slideshow of 10 reasons, artificial sweetners, coffee, etc.
http://www.everydayhealth.com/diabe...-swings.aspx#01