The onset of Menopause has often been blamed as the reason we develop that ‘middle-age spread’ – however, there are other factors to take into consideration such as:
Genetics: Wherein you are prone to accumulate and store fat thus leading to weight gain.
Decreased Activity: Women often exercise less when they go through menopause.
Decline in Metabolism: One reason metabolism declines with age is the loss of muscle mass. Muscle burns more calories than fat, so when you lose that muscle (about 1/2-lb a year if you don’t preserve it with weight training/exercise), you don’t burn as many calories. (according to the American Council on Exercise)
Diet: A diminish in our metabolism makes it imperative that we adjust our calorie intake because the end result is inevitably ‘weight gain.’