Just saw this great piece on Outside Magazine about how different medications may impact your athletic endeavors. It has a big section on birth control that cites studies that show that estrogen (as found in The Pill) may increase your endurance, but will also slightly decrease your strength training abilities. Check out the full article here.
For another look at birth control and sport, there’s a really interesting podcast with Dr. Tamsin Lewis where she talks about the problems with oral contraception and hormones.
Personally, I’ve struggled to find a birth control method that doesn’t bother my stomach or impact my performance. Additionally, with how much I travel (and shift time zones), The Pill isn’t great since it needs to be taken at the same time every day—plus filling prescriptions while on on the road is a nightmare! After a lot of trial and error in the past few years, I came to find that an IUD (specifically, the Mirena one) works really well for me, and I know a few other cyclists that swear by it.
Let me know in the comments: What have you found when it comes to birth control and cycling?