Digestive 
Blood
Cardiovascular
Dermatology
Genitourinary,
Hormones
Infections
Oncology and
Musculo-skeletal
Mental health and
Parasites
Respiratory
Senses
Various
There are different methods of contraception:
1. Barrier
- Condoms (male and female).
- Diaphragm.
- Ovum creams and spermicides.
2. Hormonal
- Birth control pills.
- Transdermal patches.
- Vaginal ring.
- Implants.
- Emergency Contraception.
3. Intrauterine Devices (IUDs)
4. Natural methods based on periodic abstinence during periods of women’s fertility cycle identified by the assessment of the cervical mucus (Billings), basal temperature, or the combination of several (symptothermal method).
5. Definitive: Tubal ligation, vasectomy.
6. Others such as "pulling out" (a method that carries a very high risk for pregnancy) and the Ogino-Knaus method (calendar or rhythm method).
