The NHS has been doing trials of diet for weight and diabetes england.nhs.uk/2018/11/very... and its proving very succesful with peeps loosing large amounts of weight and having diabetes go into remission. It hasn't been fully rolled out yet, but reading what the diet is. i've tried it and it's working, but very extreme and not for everyone's needs monitoring. Also trialed something called: endobarrier therapy which was done at Southampton hospital uhs.nhs.uk/ClinicalResearch... sos for long links but found it interesting read there again its not been rolled out but are getting good results a lot to it than the diet but not invasive. Hope this may be of interest to some.