[turc1656]

Yes and no. I'd say there is a difference between managing and fixing. All the current treatments by doctors are surrounding management. I do fully believe that Type 2 can be fixed in almost everyone with enough time on the proper diet.

From what I have seen/read, it seems to me that Type 2 is caused by a recurring assault on your metabolic processes through significant carbohydrate over-consumption. That damage accrues over time which is why it usually takes decades to become a full-blown Type 2 diabetic. It would therefore take years to fully "fix" it in a person - and that is assuming the accumulated damage is actually reversible. I believe there are some people who have damaged their bodies too much for it to actually be fixed. And on the other hand I rarely ever hear about anyone actually being full keto for years on end, providing the requisite time for their bodies to adapt and heal. It's not a quick process. The less damage, the quicker the improvement and the shorter the total time to "fix".

As to your original, direct question - I doubt it would come crashing back after just one week of bad habits. But that also has to do with the glycemic storage in your body. You muscles hold (I think it was) around 100-200 grams of potential glucose and your liver can hold something like 400-500 grams. If someone is low-carb for even a short amount of time, these "storage tanks" (as I refer to them) in the body are basically empty or close to it. As you consume garbage the excess that is not needed is added to these tanks. Once the tanks are full, the overflow goes into your blood, raising your blood sugar above normal levels. So you would have to consume somewhere between 500-700 grams in excess carbohydrates before you even started overflowing into your blood stream to have elevated levels. That's pretty hard to do in a single week. And the metabolic damage doesn't magically come back overnight. It's kind of like if you had a really bad sunburn and let it heal. The next time you went out into the sun you skin doesn't turn red immediately - the damage has to actually incur/accrue.