It is a well understood fact thst T2D IS a condition caused by poor diet, lack of exercise and obesity - the clinical evidence is there. Whilst I also acknowledge there are a minority (I think the figure is 20%) for whom thst is very sadly not the case. I don't think Michelle Dewberry is generalising, sadly it is the truth. I am under no illusion that my diabetes was caused by just that, so take full responsibility for it and (very very) regretably accept it was of my own doing.
Put it this way .... Awful diet, loads of takeaways, loads of beer, did no exercise .... Guess what - I had diabetes. 18 months on, eat healthily, stopped drinking loads of beer, lost the required weight, and far more physically active .... all my 'numbers' are now well into the non-diabetes range ...... a story echoed by soooooooo many who post in here!