Diastasis recti is the partial or complete separation of the two large bands of muscle that run vertically down the middle of your abdomen. These muscles, called the rectus abdominis, meet at a connective tissue line known as the linea alba. When that tissue stretches and thins, the muscles pull apart, leaving a gap. It is not a tear of the muscle itself, and it is not a hernia, though the two conditions are sometimes confused.
What Is Diastasis Recti Exactly?
Diastasis recti is a structural change in the abdominal wall. The connective tissue between the left and right sides of the rectus abdominis stretches beyond its normal width. This creates a visible ridge or bulge in the midline of the belly, especially when you engage your core muscles.
The condition is most commonly associated with pregnancy. Hormonal changes soften connective tissue, and the growing uterus pushes the abdominal muscles apart. But it also occurs in men, in newborns, and in people who lift heavy weights with poor technique. The gap can be small or wide, and it can close on its own or persist for years.
How Do You Know If You Have Diastasis Recti?
You can check for diastasis recti at home, though a healthcare provider can give a more reliable diagnosis. Lie on your back with your knees bent and feet flat on the floor. Place your fingertips just above your belly button, pointing toward your pelvis. Lift your head and shoulders slightly off the floor, as if doing a small crunch. Feel for a gap between the two vertical muscles.
A gap of about two finger widths or more is generally considered diastasis recti. You should also check below the belly button and above it, because the separation can occur at different points along the midline. If you feel a bulge that pushes against your fingers, that is the connective tissue stretching, not the muscle itself.
Some people notice a dome-shaped bulge in the middle of their abdomen when they sit up from lying down. Others feel weakness in their core or lower back pain. But many people have diastasis recti and no symptoms at all. The presence of a gap alone does not mean you will have pain or dysfunction.
What Causes Diastasis Recti?
Pregnancy is the most common cause. During pregnancy, the body produces hormones that relax connective tissue to make room for the growing baby. The rectus abdominis muscles naturally separate to accommodate the expanding uterus. This is a normal and necessary process.
After delivery, the muscles usually come back together within the first eight weeks. But for some women, the connective tissue remains stretched and the gap persists. Factors that increase the likelihood of persistent diastasis include multiple pregnancies, carrying a large baby, being over 35, and having a weak core before pregnancy.
In men and non-pregnant women, diastasis recti is less common. It can result from repeated heavy lifting with improper form, chronic coughing, or obesity. The mechanism is the same: sustained pressure inside the abdomen pushes against the connective tissue until it stretches. In newborns, diastasis recti is often present at birth because the abdominal muscles have not yet fused. It typically resolves on its own by age two.
Diastasis Recti vs. Hernia: What Is the Difference?
A hernia involves an organ or fatty tissue pushing through a weak spot in the abdominal wall. Diastasis recti is only a widening of the connective tissue between muscles. The two can feel similar, but they are different conditions with different risks.
An umbilical hernia, for example, occurs near the belly button and can trap intestinal tissue, which is a medical emergency. Diastasis recti does not trap organs. It is a cosmetic and functional concern, not a dangerous one. If you feel a tender bulge that does not go away when you lie flat, or if it becomes painful, see a doctor. That could be a hernia rather than diastasis recti.
Can Diastasis Recti Be Fixed with Exercise?
Exercise can help, but it depends on the exercise. Traditional crunches and sit-ups often make diastasis recti worse. These movements increase intra-abdominal pressure and push the muscles further apart. Many people unknowingly worsen their condition by doing the wrong exercises.
Research supports exercises that engage the deep abdominal muscles, particularly the transversus abdominis. This is the deepest layer of abdominal muscle, and it wraps around your torso like a corset. When it contracts, it pulls the two sides of the rectus abdominis closer together. Exercises like pelvic tilts, heel slides, and modified planks can strengthen this muscle without straining the midline.
Physical therapists who specialize in postpartum recovery often use a program of progressive core strengthening. The goal is not to close the gap completely. The goal is to improve the function of the abdominal wall so it can support your spine and internal organs. Some studies show that exercise improves symptoms like back pain and core weakness even when the gap remains.
No exercise has been proven to fully close a diastasis recti gap in all people. Some research suggests that targeted physical therapy helps, but results vary widely from person to person. The evidence is strongest for improving function and reducing symptoms, not for achieving a specific millimeter measurement of closure.
When Is Surgery Needed for Diastasis Recti?
Surgery is rarely necessary. It is considered only when conservative treatment has failed and the condition causes significant problems. These problems might include chronic back pain, pelvic instability, or a bulge that interferes with daily activities.
The surgical procedure is called an abdominoplasty, commonly known as a tummy tuck. During the surgery, the surgeon pulls the separated muscles back together and sutures the connective tissue. This is a major operation with a significant recovery period. It is not covered by insurance when performed for cosmetic reasons, but it may be covered if the diastasis causes functional impairment.
Some women seek surgery because they are unhappy with the appearance of their abdomen after pregnancy. That is a valid reason, but it is important to understand that surgery carries risks including infection, bleeding, and scarring. It is also not a substitute for core strengthening. Many surgeons recommend physical therapy before and after surgery to optimize outcomes.
Does Diastasis Recti Go Away on Its Own?
For many women, the gap narrows significantly in the first few months after childbirth. The body is designed to recover from the stretching of pregnancy. But for others, the gap persists indefinitely without intervention. There is no reliable way to predict who will recover fully and who will not.
Breastfeeding does not prevent or heal diastasis recti. Wearing abdominal binders or splints may provide temporary support and comfort, but no clinical evidence confirms that they close the gap. Some women report that binding helps them feel more stable in the early postpartum period, and that is a reasonable use, but it is not a treatment.
If you are more than a year postpartum and still have a visible gap, it is unlikely to close significantly on its own. That does not mean you cannot improve your core function. It means the structural change may be permanent, and the focus should shift to strengthening the muscles that remain.
What Happens If Diastasis Recti Is Left Untreated?
Most people with diastasis recti live normal, healthy lives without treatment. The condition is not dangerous on its own. It does not progress to a hernia in most cases, though some research suggests a possible association between the two. The evidence for this link is not strong enough to say that one causes the other.
The more common consequence is functional weakness. The abdominal wall plays a role in posture, breathing, and supporting the lower back. When it is compromised, some people develop back pain, pelvic floor dysfunction, or urinary incontinence. These issues are treatable with physical therapy, and addressing them is more important than closing the gap itself.
If you have diastasis recti and no symptoms, you do not need treatment. If you have pain, weakness, or concerns about your appearance, talk to a healthcare provider. A physical therapist can assess your specific situation and design a program that matches your needs.
Frequently Asked Questions
Can men get diastasis recti?
Yes, men can develop diastasis recti, though it is less common than in women. It typically results from heavy lifting with poor form, chronic coughing, or obesity.
How long does it take for diastasis recti to heal?
The gap often narrows on its own within the first eight weeks after childbirth. If it persists beyond a year, it is unlikely to close without intervention.
Are sit-ups bad for diastasis recti?
Sit-ups and crunches can worsen diastasis recti by increasing pressure inside the abdomen. Exercises that engage the deep transversus abdominis muscle are generally safer and more effective.
Can diastasis recti cause back pain?
Some people with diastasis recti experience lower back pain because the abdominal wall provides less support to the spine. Physical therapy can help strengthen the core and reduce this pain.
