I started with a Mirena coil to control bleeding, but that didn't stop the onset of the flushes, clumsiness, mood swings, irritability and general lack of concentration. That was at 45. Some I put down to stress of a divorce, but after 5 years getting worse got onto HRT via Systen patches, and everything improved markedly. However Doc would not let me remain on them beyond 4 years and switched to Liviol for a year before phasing that out too. I'm better than I was 6 years ago, and no bleed, but gained weight, much less energy and still need to wear cotton, no high necklines, layers than can be taken off in a hurry. Like Gardenmoma, there's a shot of adrenaline just before the flush, enough to wake me up, and some nausea. I've tried modifying diet (Eat to Beat the Menopause - but Noni I will try cutting dairy), more exercise, reduced my hours at work to part time, on 10mg Citalopram to even out the mood swings, but I'd be very happy to go back onto HRT, even given the risks.
One comforting thing is that at the same age (when I was only in my 20s), I thought my mother was "a bit thick", seemed to be one topic behind in the conversation and a few other odd things, and I was surprised later on, when in her 60's, at what an intelligent woman she had become. In hindsight, she was just where I am now.