Birth control refers to methods or devices used to prevent pregnancy. There are various types of birth control, each with different mechanisms of action, effectiveness, and suitability for different people. Here are some common types:

1. Hormonal methods:
   • Birth control pills: Oral medications that contain hormones (typically a combination of estrogen and progestin, or progestin alone) to prevent ovulation.
   • Birth control patch: A small, adhesive patch worn on the skin that releases hormones.
   • Birth control injection: An injection of hormones (usually progestin) given every three months.
   • Birth control implant: A small rod inserted under the skin of the arm, releasing hormones to prevent pregnancy for up to 3 years.
2. Barrier methods:
   • Condoms (male or female): Physical barriers that prevent sperm from reaching the egg. Condoms also offer protection against sexually transmitted infections (STIs).
   • Diaphragm: A dome-shaped device inserted into the vagina to cover the cervix, used with spermicide to prevent sperm from entering the uterus.
3. Intrauterine device (IUD):
   • A small, T-shaped device inserted into the uterus by a healthcare provider. It can be hormonal (releasing progestin) or non-hormonal (made of copper, which prevents sperm from fertilizing an egg).
4. Permanent methods:
   • Sterilization: A surgical procedure that permanently prevents pregnancy. For women, this may involve tubal ligation (fallopian tubes are blocked or cut). For men, a vasectomy (cutting or sealing the vas deferens) is performed.
5. Fertility awareness:
   • This involves tracking ovulation and menstrual cycles to avoid sex on fertile days. While not as effective as other methods, it can be used by those who prefer a natural approach.
6. Emergency contraception:
   • Pills taken after unprotected sex to prevent pregnancy. It is more effective the sooner it is taken after intercourse.

Choosing the right method depends on personal preferences, health conditions, lifestyle, and the desire for long-term or short-term prevention. Consulting with a healthcare provider can help determine the most suitable option for you.