I am not medically trained, but over the years I've realised more and more how misunderstood, under-researched and just generally ignored the female human body is. In terms of the impact of medicines, the cycle of hormones (monthly, and over a lifetime), the difference in immune system responses (it turns out that women might be better protected from the Covid vaccine, for instance, due to a stronger immune response), the impact of thyroid conditions, etc.
There's also just the actual composition of the female body, in that the health of the woman's uterus impacts her entire pelvic health - the uterus holds the bladder and lower intestines in place. My own mother wasn't told about this when she was given a hysterectomy when she was 36, and has dealt with incontinence and constipation for years as a result.
I consider my periods to be a fairly good indicator of how well I am - they went wonky earlier this year as a direct result of massive stress, for example.
Female-centric medicine just doesn't really exist, does it? I find it really frustrating, because a little bit of knowledge and understanding would be a massive help to so many. I don't know much, but I'd like to understand more - what is the lifelong impact on my immune system from having children? How does my breast cancer risk reduce because I've breastfed? What kinds of health issues impact/change a woman's cycle? What is the range of normal for such things? Why do women suffer from endometriosis and why isn't there more options for helping them? etc.