You should avoid roller coasters if you have a leaky heart valve.
The rapid accelerations, decelerations, and sharp directional changes on roller coasters place significant strain on the cardiovascular system. For someone with a leaky valve, this can:
If you have a diagnosed leaky valve, discuss safe activity levels with your cardiologist. They may advise against not only roller coasters but also heavy lifting, intense aerobic exercise, and other activities that sharply raise cardiac demand.