Edife,
Avonex and Rebif are made IN the ovary of the Chinese Red Hamster. NOT made from their ovary. They use the rodents ovary as a culture media to help make the medication which they inject into the ovary of the hamster. Like using a chicken egg to inject and make the Flu shot.

In that tiny ovary there is no Estrogen for women to get from it. You either make your own or get it from a drug. If you take lots of soy (which is filled with Estrogen) you will have more Estrogen in your body.

Now for Men Estrogen in soy foods, lowers their testosterone level, causes early baldness, and possibly man-boobs.

Normal, non MS young girls and young women don't need extra Estrogen unless tested and it shows you need more.

You could just change your diet and add soy to get a boost if you feel you want to add Estrogen.

There is the EPF (early pregnancy factor) that protects the baby from being rejected and it also keeps MS at bay while pregnant. It keeps the body from attacking itself with MS, and attacking the baby as a foreign invader to the body.

Progesterone and Estrogen are made early and increase while pregnant. This too helps keep the relapses away while pregnant and when the levels drop after delivery some women experience a relapse. Nursing may keep the levels higher for a while too.