Dr. Berga explains why hormones are different for everyone at age 55, even though they were the same at age 25.
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It’s because it’s a little more complicated. When you’re 25, you’re making an egg and you’re really seeing the same amount of Estradiol and Progesterone per cycle as everybody else. When you’re 55, you’re taking a hormone and your body size differs one to the next and so to get the same serum level, you would actually need to have a vast array of different hormone ranges. And so we don’t know what the right range to give a 50-year-old would be really. But even if we knew it, we’ve still would need a different set of different kinds of hormones to get to that range to keep everybody there. So that’s the reason we can’t just give one sides to every body.