See to be very frank, weight gain on perimenopausal period is such a symptoms every women after a certain age suffers. This is just normal because a lot of changes in the body is happening. Even your normal diet would no longer be effective now. Aside from your diet, you can combat this weight gain by visiting your doctor. In addition to this,i would suggest you to go for a whole body detoxification.This would definitely help you as one of my close friend availed this as she was so depressed. Fresh Start Health Retreat Center, situated South Island Highway,Oyster Bay in Canada. She availed the 5 Day Wellness Program inclusive of Juice Fasting & Body Detox. For immediate assistance you can also personally contact them @ ( 888-658-3324).