 But if you're under a doctor's care and you're taking estrogen replacement therapy, that's a good thing because that's going to keep your brain healthy, your heart healthy, and your bones strong. Well, that's a good thing to know. It is. So how long should a woman, do you think, stay on any kind of hormone therapy? Is this something one commits for the balance of a life? And I don't mean just estrogen. I mean hormones.