My late mother used to regularly make remarks about my weight as if I hadn't noticed. Since much of my problem was due to 'comfort eating' her remarks usually sent me heading for the biscuit tin or my stash of chocolate. Texts of this type would, I'm sure, have the same effect. I've lost about 3 stones over the last few years, some actual fat and some the excess fluid that I carried on my swollen legs, which disappeared when I was put on diuretic tablets. I seem to be unable to shift more weight, although I still need to lose some, but I refuse to 'diet' as I just get obsessed with food and become miserable, resulting in the aforementioned 'comfort eating'. The loss of the 3 stones and the acquisition of a fitbit have made me much more active but my weight refuses to come down further.
As for GP's knowing their patients and the reverse, my GP left last year and no-one has told me who I'm now registered with now. I seem to see a different person every time I go.