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 …

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 pregnancy …

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.

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 …

How do birth control pills prevent pregnancy? The birth control pill works by stopping sperm from joining with an egg. When sperm joins with an egg it’s called fertilization. The hormones in the …

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 …

Sep 26, 2022 · Hormonal birth control methods prevent pregnancy by stopping ovulation, increasing the thickness of mucus in the cervix as a barrier to sperm, and/or stopping fertilized …

Aug 1, 2025 · How do birth control pills prevent pregnancy? Birth control pills primarily prevent pregnancy by stopping ovulation (the release of an egg), thickening cervical mucus to block …

Jul 14, 2023 · 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 …

May 10, 2023 · There are birth control pill regimens designed to prevent bleeding for three months at a time or for as long as a year. But it's possible to prevent your period with continuous use …