Obstetrics and gynecology, often shortened to OB/GYN, is the branch of medicine focused on the female reproductive system and women’s health across every stage of life. Obstetrics covers pregnancy, childbirth, and the weeks of recovery afterward. Gynecology covers everything else: menstrual health, contraception, hormone problems, cancer screenings, menopause, and conditions affecting the uterus, ovaries, and surrounding organs. Most doctors in this field practice both sides, which is why you typically see them referred to together.
What Obstetrics Covers
The obstetrics side of OB/GYN focuses on three phases: prenatal care (before birth), labor and delivery, and postpartum care (after birth). During pregnancy, an obstetrician monitors the health of both the pregnant person and the developing baby through regular checkups, ultrasounds, lab work, and screenings for complications like gestational diabetes or preeclampsia. They also help patients plan for delivery, discuss birth spacing, and address any chronic health conditions that could affect the pregnancy.
After delivery, obstetric care continues. Current guidelines recommend that patients have contact with their provider within the first three weeks after giving birth, followed by a comprehensive visit no later than 12 weeks postpartum. That final visit covers a wide range of concerns: physical recovery, mood and emotional health, sleep, breastfeeding, contraception, and management of any chronic conditions. This postpartum period is treated as an ongoing process rather than a single checkup.
What Gynecology Covers
Gynecology is the broader half of the specialty. It handles the diagnosis and treatment of conditions affecting the reproductive organs at any age, whether or not pregnancy is involved. Common reasons people see a gynecologist include irregular periods, pelvic pain, difficulty getting pregnant, hormone fluctuations, and routine cancer screenings.
The well-woman exam is a core part of gynecological care. These visits include cervical cancer screening (Pap tests), conversations about contraception, and counseling on topics like bone health, weight management, and cardiovascular risk. For cervical cancer screening specifically, current guidelines recommend Pap tests every three years for women aged 21 to 29. For those aged 30 to 65, the preferred approach is HPV testing every five years, or a combined Pap and HPV test every five years. Mammography screening for breast cancer is recommended to begin somewhere between age 40 and 50, depending on individual risk, and should continue at least through age 74.
On the surgical side, gynecologists perform a wide range of procedures. These include hysterectomy (removal of the uterus), surgical treatment of endometriosis, removal of fibroids or ovarian cysts, pelvic floor reconstruction, and sterilization procedures. Many of these surgeries are now done using minimally invasive techniques, including laparoscopic and robotic approaches, which typically mean smaller incisions and shorter recovery times.
Gynecological Care After Menopause
Gynecologists don’t just treat people during their reproductive years. They’re trained to guide women through menopause and well into the decades that follow. As the population ages, gynecologists increasingly serve as key health providers for older women, helping manage symptoms like hot flashes and vaginal dryness while also screening for conditions that become more common after menopause, including osteoporosis and certain cancers.
The annual well-woman visit remains important in this stage of life. It gives gynecologists an opportunity to recommend lifestyle changes, catch health problems early, and coordinate care for chronic conditions. For many postmenopausal women, a gynecologist functions as both a specialist and something close to a primary care doctor.
OB/GYNs as Primary Care Providers
For many women of reproductive age, an OB/GYN is their main point of contact with the healthcare system. These doctors provide both specialized reproductive care and general preventive services, which means they may be delivering most or all of a woman’s preventive care in practice. Annual visits typically include counseling on tobacco use, cardiovascular health, and weight management, alongside reproductive-specific services.
That said, OB/GYN visits tend to emphasize reproductive health screenings more heavily than general health screenings. Pap tests, for instance, are provided in roughly 45% of OB/GYN preventive visits compared to about 21% of visits with a general practitioner. But cholesterol testing happens in only about 3% of OB/GYN visits versus 30% of generalist visits. If your OB/GYN is your only doctor, it’s worth asking whether you’re also getting the non-reproductive screenings you need.
How OB/GYNs Are Trained
Becoming an OB/GYN requires four years of medical school followed by a four-year (48-month) residency program specifically in obstetrics and gynecology. After completing residency, doctors become eligible for board certification through the American Board of Obstetrics and Gynecology (ABOG) or its osteopathic equivalent.
Recognized Subspecialties
Board-certified OB/GYNs can pursue additional training in five recognized subspecialties:
- Maternal-fetal medicine: focuses on high-risk pregnancies and complex prenatal conditions
- Gynecologic oncology: specializes in cancers of the reproductive system
- Reproductive endocrinology and infertility: treats hormone disorders and fertility problems, including IVF and egg freezing
- Urogynecology and reconstructive pelvic surgery: addresses pelvic floor disorders like incontinence and organ prolapse
- Complex family planning: focuses on contraception management and pregnancy termination in complicated clinical situations
These subspecialists complete additional fellowship training beyond the standard four-year residency, typically two to three more years depending on the field.