Hi, I'm interested in what other women cyclists would know about dizziness while rapid descents on the bike. Recently I've put up with feelings of dizziness, feelings of overbalancing, loss of control of the bike etc. Unfortunately it has been getting worse. My GP assures me that really nothing is wrong, ie: eat well, iron supplements, ample rest and practice skills/drills. I ride mainly as a commuter (approx 60km per week), but also do road, touring and single track. It mainly occurs at speeds over 35km+ (downhill), but not while I'm sprinting on the flats. A fear is that I'll grab a handful of brake while freewheeling downhill. I've tried different saddle positions, including aero position etc, but still no respite. Should I consider a second opinion from another GP and further tests? Does anyone have any personal advice or links to revalent information? ta.