I don't know about moods (mine went easily), but I am often flummoxed by the amount of women on MN who blame meno for their body weight.
In some, rare cases, perhaps - but not generally.
Even medical research has concluded that whilst weight gain may grow in different areas (belly instead of hips) it has nothing whatsoever to do with what you weigh. Unless you have medical issues or a metabolic problem, there is no reason peri or meno ought to make you fatter.
Middle age invariably correlates to less activity on the whole, from dependence on cars, seated jobs and WFH. A few hours at the gym won't shave off the extra cheese brick 
I personally don't know anyone who gained weight at meno, unless they decreased activity and ate more.
The metabolism might slow somewhat but not to the extent that one has to live on 600 cals per day. This is extraordinarily dangerous advice, and I see it a lot on here.
I eat as I have always done, and only get a belly when I increase drinking wine. I am no more active then 20 yrs ago.
I do think meno is used as an excuse, tbh.
Some people's bodies alter after having children, but that is a completely different issue.
I am amazed by how many threads in S&B and Weight loss Chat focus on not being able to eat much now meno has arrived. People are taking this as factual and blaming it for weight gain. Not a healthy approach, really.
And to bust a myth - no, we don't all have to diet and exercise like crazy after meno to keep to a healthy weight.