What has happened is that menopause has been brought out of the closet, like a lot of things that before were taboo and hushed up. (Or men made comments about 'the change'.) Very few women in the UK use HRT- around 15%.
There are possible reasons why there is no use of HRT in some countries (accessibility being one, lifespan being another) - and huge amounts of soy eaten in the east - but also perhaps genetic differences around why they have fewer symptoms.
Also, in China, women retire at 50. So holding down a job to pay the mortgage is not part of their experience if they are experiencing meno symptoms.
But equally Pharma companies play a very large role in research and also pushing for their own agenda. I say that as someone who wrote their PhD for a large almost mammoth international pharmaceutical company, and still have colleagues in the field.
There is NO research into drugs and meno now.
If you want to read the White Paper produced by the International Menopause Society this year, (it's just out) they say they wish there was more research, like double blind trials, rather than observational retrospective studies, but pharma are not interested and there is no funding.