Final answer:
Oral contraception, or birth control pills, use synthetic progestins and estrogen to prevent pregnancy by mimicking the hormones released during pregnancy and preventing ovulation. They may have side effects such as weight gain and an increased risk of blood clots.
Step-by-step explanation:
Oral contraception, also known as birth control pills, is a method of preventing pregnancy by delivering synthetic progestins and estrogen to a woman every day. These hormones mimic the hormones released during pregnancy and prevent ovulation. However, like any medication, oral contraception has potential side effects. Some common side effects include weight gain and an increased risk of blood clots.