From Wired:

Menopause is weird. If you’re a human woman, you’re born with every egg you’ll ever have in your ovaries. By the time you reach your fifties, every egg is gone. You stop getting your period. As your hormone levels change, you experience symptoms ranging from hot flashes to a loss of bone density. We don’t know much about it, because only humans and some whales experience it. There's also a gap in research specifically for women's health.

A slew of recent initiatives, from both the public and private sectors, are trying to change this. Last year, First Lady Jill Biden launched the White House Initiative on Women’s Health to help close the research gap on conditions like menopause. Also, if you own an Apple Watch, you can opt in to contribute your data to the Apple Women’s Health Study, designed to advance the understanding of menstrual cycles.