Beyond a year, we don’t know [what happens]. The question is, does the birth control pill imprint on the body a signal to continue making this protein that attaches to the testosterone? If so, these...

We have known for a long time that 30 to 40 percent of women on birth control pills have decreased libido.

If that binding protein is still a bit elevated, you might have a decrease in libido that persists.

When you put someone on the birth control pill, you block a lot of the ovarian production [of testosterone].