Prediabetes is a serious health condition, where you have high insulin levels coupled with above the normal blood sugar levels, although not high enough (yet) to be classed as type2 diabetes. Known as non-diabetic hyperglycaemia, prediabetes can develop into type 2 if not carefully managed. https://www.prolongevity.co.uk/what-causes-prediabetes-and-how-to-reverse-it/