Have just joined you as am also thinking of doing newcastle diet.....female 62 and diagnosed two years ago. Have stopped metformin after trying both sorts and having bad abdominal pain and needing codeine x2-3 week to control diarrhoea. gP not very happy but I am now feeling better and finally after nearly six weeks no more pain or need for codeine. Have been trying to low carb but fbs still in 8-11 range. Has anyone actually done the newcastle diet? Any advice welcome...