Because I am starting to show signs of early diabetes.
And also because eating this way makes me feel better! more energy, less abdominal problems/pain, head is clearer.
For me a bonus point is that I have lost weight with it but it has never been the point of it iyswim.
I suppose the problem is I can't quite be bothered to totally change the way I shop, cook and eat,
tbh I haven't change that much. I have changed my breakfast but no one else has (not an issue, the dcs already had something different and DP is more than able to prepare his own toast).
Evening meals, I just ensure that I can separate the carbs from the rest (so no lasagne). So I still do a stir fry but skip the noodles and have more veg instead.
Lunch, again we were having different things anyway so I have just adapted my own lunch. No changes for the others.
It does require you to change the way you eat but then that's the whole point isn't it? That you change your diet for a more healthy way of eating that is then becoming the norm. Not changing the way you eat for 2 months, loosing the weight and then going back to old habits that did cause the problem in the first place?