In adults, a rare side effect of taking diabetes pills is lactic acidosis, a very serious condition caused by a buildup of lactic acid in the blood. Lactic acidosis can cause symptoms like rapid breathing, muscle pain, cool and clammy skin, sweet-smelling breath, nausea, and vomiting. This problem has mostly happened in elderly people who have other medical problems in addition to their diabetes.
What are the symptoms of prediabetes? People typically do not have symptoms of prediabetes, which is partially why up to 90% of people don’t know they have it. The ADA reports that some people with prediabetes may develop symptoms of type 2 diabetes, though even many people diagnosed with type 2 diabetes show little or no symptoms initially at diagnosis.
One can't, in spite of the initial reported success of following a 600 kcal vegetarian diet for 8 weeks cured all 11 participants of their diabetes, resulting in an enormous very beneficial weight loss of 15 kg and reversal of pancreatic fat infiltration that many think is the underlying defect causing type 2 diabetes, see this 2011 paper Reversal of type 2 diabetes: normalisation of beta cell function in association with decreased pancreas and liver triacylglycerol only just 3 months afterwards diabetes had recurred in 5 out of the 11 see Diet reverses Type 2 Diabetes
in the mean time Professor Roy Taylor has published a second paper on trying to cure obese type 2 diabetics by putting them on that 600 kCal diet for 3 months in 20916, the success rate was 50% Very Low-Calorie Diet and 6 Months of Weight Stability in Type 2 Diabetes: Pathophysiological Changes in Responders and Nonresponders. Mean weight loss was 15 kg ≈ 15%, and maintained after those 3 month.
This seems hard to do, but really it’s not if you know one secret: Replace snacking with something far more satisfying — fat. That’s right, the government is wrong to recommend a low fat diet. Fat is what makes you feel full until your next meal. Take away the fat, take away the full. Don’t go to an extreme, but do lean strongly toward a high-fat low-carb diet.