What is going on with my body?

When I was in my early forties, my whole body shifted…downward. I used to have toned arms and loved wearing sleeveless dresses, but gradually, my sleeves got longer. Somewhere in my midforties, I went up a size. And then another. Most of my weight gain went right to my belly. Even my bras weren’t fitting right. And no amount of exercise felt like it was working. It made me feel awful. Then sad. Then self-loathingly bad. And one of the most frustrating things was that I hadn’t made any changes...