I haven't heard of this. Have you read all the ingredients in the yogurt? Maybe there is a trigger ingredient that is affecting your body and your blood sugar? I have found a yogurt made by Kroger (I find it at my local Gerbes grocery store, Kroger stores) that is called Carbsmart. For 6oz it has 80 calories, 1.5g Fat, only 4g carb and 12g protein! I add a banana and some nuts and it’s soooo yummy and fulfilling. 
