A cesarean delivery carries several long-term effects that can show up months or even years after surgery. Some are common and manageable, like scar numbness and adhesions. Others are rarer but worth knowing about, especially if you’re planning future pregnancies. Here’s what the evidence shows for both the mother and the baby.
Adhesions: The Most Common Physical Effect
Every C-section involves cutting through multiple layers of tissue, and your body repairs those layers by forming bands of internal scar tissue called adhesions. Studies show adhesions develop in 24% to 65% of women after a first C-section, and that number climbs to roughly 74% in women who have repeat cesareans. Most women with adhesions never know they have them. But when adhesions do cause problems, they can lead to chronic abdominal or pelvic pain, painful sex, bloating, nausea, or changes in bowel habits.
Adhesions are also responsible for an estimated 15% to 20% of female infertility cases and about 60% of bowel obstructions after abdominal surgery. They make subsequent surgeries more technically difficult, which is one reason each additional C-section carries greater surgical risk than the last. How the surgeon closes the uterine layers matters: leaving the outer lining of the abdominal cavity open during closure has been linked to higher adhesion rates.
Chronic Pelvic Pain
About 12.7% of women report chronic pelvic pain one to two years after giving birth. Women who delivered by C-section had a 6.1% higher incidence of this pain compared to those who delivered vaginally. The pain can stem from adhesions, nerve damage at the incision site, or changes in how the abdominal wall and pelvic muscles function after surgery. For some women it resolves gradually; for others it becomes a persistent issue that affects daily life.
Scar Numbness and Nerve Changes
Numbness or altered sensation around the incision is extremely common after a C-section. The surgery cuts through small sensory nerves in the skin and underlying tissue, and those nerves regenerate slowly. Many women notice a band of reduced feeling just above or below the scar that can persist for months. In some cases, full sensation never completely returns, leaving a permanent patch of numbness or tingling. This is usually more of an annoyance than a medical concern, but it can feel unsettling if you’re not expecting it.
Incisional Hernia Risk
A hernia occurs when tissue pushes through a weak spot in the abdominal wall, and any abdominal surgery creates that vulnerability. A large register-based study tracking over 57,000 women for up to 10 years found the risk of developing a hernia that needed surgical repair was about 2 per 1,000 cesarean deliveries. Most hernias that did develop appeared within the first three years. Interestingly, about half of the hernias showed up along the midline of the abdomen even though the original C-section incision was a horizontal cut lower down, suggesting that the strain on the abdominal wall during pregnancy and surgery affects more than just the incision site.
Pelvic Floor Differences
One area where C-sections may offer an advantage is pelvic floor function, at least in the short to medium term. A study comparing women six years after uncomplicated vaginal delivery versus elective cesarean found that vaginal delivery was associated with higher rates of stress and urgency incontinence. Urinary incontinence rates after vaginal birth ranged from 23% to 25%, compared to 10% to 16% after cesarean. However, the impact on quality of life was similar between groups, and fecal incontinence rates were no different. Women who had cesareans were more likely to report pain during sex and urination pain at the six-year mark.
Risks in Future Pregnancies
The C-section scar on your uterus creates unique considerations for any future pregnancy. If you attempt a vaginal birth after cesarean (VBAC), the main concern is uterine rupture, where the scar partially or fully separates during labor. With the most common incision type, a low transverse (horizontal) cut, that risk is about 0.9%, or slightly less than 1 in 100. A vertical incision on the upper part of the uterus carries a significantly higher rupture risk, which is why many providers won’t recommend VBAC for women with that type of scar.
Each additional C-section also increases the chance of abnormal placenta attachment in future pregnancies, a condition where the placenta grows too deeply into the uterine wall. This can cause severe bleeding during delivery and sometimes requires a hysterectomy. The risk rises meaningfully with each repeat cesarean, which is one reason doctors discuss long-term family planning with women after their first C-section.
Mental Health Effects
C-sections, particularly emergency ones, carry a notable mental health footprint. Postpartum depression affects an estimated 20% to 40% of women in the first year after a cesarean delivery, higher than rates seen after vaginal birth. Post-traumatic stress disorder develops in 4% to 20% of women during that same window. Emergency cesareans performed before or during labor, severe post-surgical pain, lack of social support, and postpartum anemia all raise the risk further. These aren’t fleeting feelings of disappointment. For some women, the experience of an unplanned surgical birth can shape their emotional recovery for months or longer.
Effects on the Baby
Babies born by C-section miss the passage through the birth canal, which exposes them to the mother’s vaginal and intestinal bacteria. This early bacterial exposure helps seed the infant’s gut microbiome, and skipping it appears to have measurable downstream effects. A comprehensive systematic review found that children born by cesarean had a 20% higher risk of developing asthma, a 35% higher risk of food allergies, a 15% higher risk of allergic rhinitis, and an 8% higher risk of eczema compared to children born vaginally.
Weight is another area of concern. One study found that children delivered by cesarean had roughly double the odds of being overweight or obese by ages two to five, even after adjusting for other factors. A small increase in Type 1 diabetes was also observed in the cesarean group, though this association lost statistical significance once researchers controlled for confounding variables like maternal weight and breastfeeding duration. These findings don’t mean a C-section causes these conditions outright. Many other factors, including genetics, diet, and environment, play larger roles. But the association is consistent enough across studies that researchers believe the altered microbiome at birth contributes.