I can't take caffeine anymore - you know why - I had a baby and quit it for nine months and my system just prefers me not to drink 20 cups of coffee on three hours sleep. It's ridiculous to think this is an indication of the menopause.
Do you have hot flushes, dry fanjo (don't answer, please ), mass urge to kill people (apart from your mum obviously) ???
No? Probably just that we all change as we get older then.