TOFI is a good, simple description of people who are 'Thin on the Outside but Fat on the Inside'. I learned a (for me) a clearer definition just recently and that is MONW ie Metabolically Obese Normal Weight. I fall into this category. It took me a while to accept that I was T2 until I got my head around this. I am as obese at my weight as those who are obese on the outside. The risks for both are exactly the same which posits the theory that there may be hundreds of thousands of people walking around undiagnosed simply because of the way they 'look'. Scary.