So after being low-carb for a long time, I've reintroduced some carbs for enchancing athletic performance, most of it has been starches and from vegetables sources, but today I ate fruits, a lot of fruits, and I experienced dizziness, confusion, "stars" in my vision that made me unable to see almost anything, and I had a very unpleasant sensation of passing out. It was absolutely terrible, and the feeling was exactly like what I've experienced before when I had very low blood sugar. I had only eaten steaks and eggs that day, and I had been doing heavy physical labor (lifting crates) for over eight hours when this happened. What is wrong? Did I overwhelm my body with sugar or am I becoming diabetic or something?
asked byTnQ (695)
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on May 02, 2013
at 10:12 PM
As I understand it when you are in ketosis, your body becomes functionally insulin resistant (not the bad kind of insulin resistance), and because glucose is at a premium in your system it gets shuttled straight to your brain. If you suddenly load up that lean and mean glucose delivery system, you'll get slammed pretty hard by the sudden ingestion of large amounts of sugar. Just like switching away from eating a lot of sugar can be a bitch, so can the return if you do it too quickly.
on May 03, 2013
at 01:45 AM
Why not get a meter so you can check your blood sugar and see what's happening?
I suspect it WAS hypoglycemia. So-called "safe" starches and/or carb loading may not work for you, because you were probably insulin resistant to begin with (your own description of having very low blood sugar in the past).
Vollek and Phinney claim that you DON"T need carbs for athletic endeavor (The Art and Science of Low Carb Performance). I know a lot of people here disagree, but they may not be people who are insulin resistant in the first place.