I did notice, once I crossed the 45 line (and certainly when my period started becoming a little less regular--I've skipped a few months here and there. Sorry, but hormones are relevant), that it became a little harder to stay "at weight." Five years ago I could ignore calories for days on end and still not gain; I have to be a bit more careful now. Five years ago I could cut back on calories and see an almost-instant weight loss; now it takes a little longer to start losing. I do also enjoy/crave sweets overall more than I did in my 20s and 30s, though that might be unrelated. But I can still be a bit more careful and not gain. My body hasn't started creating fat cells from air, ffs, and I'm certainly not at a point where one dessert makes me gain weight. I just need to be a little more vigilant about my activity levels and calories. It's no big deal. And I still get carded for alcohol and even cigarettes on occasion, and I still get hit on in stores and whistled at on the street. I turned 47 two months ago and look at least ten years younger.