Dear @GenK
Try and steer your Mum away from Dr Google, it does not help and most sites are simply promoting their own commercial ends. Apart from any dietary choices that your GP or specialist recommends for diabetes, the short answer is a healthy mixed diet. Limit alcohol, sugar (that includes fruit juice and soft drinks), processed meat. Small portions four times a day may help with weight. More veggies, fish, eggs. Frozen veggies or fruit are fine, I’ve never heard about not eating cold things. I lost my taste buds on Taxol and could only taste a few things (salad, bananas, eggs and avocado!) but it was excellent for weight control! My sense of taste returned as soon as my 12 weeks of Taxol were over but yes, it was boring. Best of luck.