I have a large family, so I often employ ‘to-do’ lists to stay focused and accomplish important tasks. A few weeks ago, I spent Sunday evening writing a to-do list for Monday. The top thing on my list was to get my newly minted teen son to the doctor. We are a homeschooling family, so my son is with me for the majority of his day. Because of this, I am privy to variations in his habits. I’d noticed an uptick in his hunger – which I at first wrote off to puberty – but he began losing weight and drinking an excessive amount of water. I suspected diabetes, but…