The hormonal changes of menopause tend to make it more likely that women will gain weight around the abdomen, rather than the hips and thighs. But hormonal changes alone don't necessarily cause the weight gain. Instead, it's usually related to aging, as well as lifestyle and genetic factors.
For example, muscle mass typically goes down with age, while fat increases. Losing muscle mass slows the rate at which the body uses calories. That rate is called metabolism. This process can make it more difficult to stay at a healthy weight. If you continue to eat as you always have and don't do more physical activity, you're likely to gain weight.
Most people become less active as they age. Paying attention to your activity and trying to move more may help keep you at a healthy weight.
Genetic factors also might play a role in weight gain around menopause. If your parents or other close relatives carry extra weight around the abdomen, you probably will too.
Other factors, such as eating a diet that isn't healthy and not getting enough sleep, might contribute to menopause weight gain. When people don't get enough sleep, they tend to snack more and eat and drink more calories.