How Do Birth Control Pills Work? | Britannica
Birth control pills are synthetic steroid hormones, usually consisting of either a single hormone, progestin, or two hormones, progestin and estrogen. These hormones suppress the release of …
Birth Control Pill: Types, Side Effects & Effectiveness
Jul 5, 2023 · The hormones in birth control pills prevent pregnancy by blocking conception, when sperm fertilizes an egg. They also cause changes in your uterus so that it can’t support a …
Birth Control Pills: How They Work, Types, and Side Effects ...
Dec 8, 2025 · Birth control pills work to prevent pregnancy in a few ways. They prevent the release of an egg from the ovaries, make it harder for sperm to reach an egg, and prevent a …
How Does the Birth Control Pill Work | BirthControl.com
Sep 4, 2025 · Learn how the birth control pill works, what it does to your body, and why it’s one of the most studied medications in the world.
Your Guide to Birth Control Pills: Types, Effectiveness, Safety
Aug 15, 2025 · Birth control pills are oral contraceptives that contain small amounts of hormones similar to the ones your body naturally produces. The hormones in birth control pills work to …
How Contraceptives Work - R Street Institute
Feb 11, 2025 · All contraceptives prevent pregnancy before implantation occurs, but the way they prevent pregnancy differs by contraceptive type. There are many different types of …
How do birth control pills work? - Go Ask Alice!
Jul 29, 2024 · While the body’s natural hormone levels fluctuate throughout the menstrual cycle, birth control helps stabilize hormone levels to prevent pregnancy. To learn more about the …