My mother is 49 years old, she asked why is it hard to lose weight during menopause & what can be done to remain healthy? (for e.g. certain diets) etc?

An appointment would be preferable with a doctor that specializes in weight management. There are many factors that contribute to weight gain including sleep, stress, drugs, movement patterns, meal timing, and hormonal dysfunctions. Diet must be tailored to the individual’s tastes, but in general consuming a diet high of minimally processed plant foods & lean protein is a good first step.