For many postpartum women and even some men, a lingering belly bulge isn’t always about leftover weight. In fact, one of the most common yet misunderstood contributors to abdominal separation and core weakness is diastasis recti.

Often brushed off as a “mommy tummy,” diastasis recti is far more than a cosmetic issue. It’s a functional core condition that can impact posture, breathing, digestion, pelvic floor health, and even mental well-being.

In this guide, we’ll break down what diastasis recti really is, why it matters at every life stage, and how Corelife Wellness in Oakville provides evidence-based, non-invasive treatments that help clients reclaim core strength and body confidence.

What Is Diastasis Recti?

Diastasis recti (DR) refers to the separation of the rectus abdominis muscles, commonly known as the “six-pack” muscles, along the midline of the abdomen.

This separation occurs when the connective tissue (linea alba) that runs between these muscles stretches or thins out, often due to increased pressure in the abdominal cavity. It’s most commonly seen during and after pregnancy, but can also affect men and women due to weight changes, certain types of exercise, or abdominal surgeries.

According to a 2016 study in the British Journal of Sports Medicine, up to 60% of women may experience some degree of diastasis recti postpartum.

Common Signs and Symptoms

Some signs of diastasis recti are subtle, while others are more pronounced. You may experience:

• A visible bulge or “doming” in the mid-abdomen, especially when sitting up or straining
• Persistent core weakness or poor posture
• Low back pain or pelvic instability
• Difficulty engaging your core during movement
• Bladder leakage (stress incontinence)
• Digestive issues like bloating or constipation

It’s important to note that not all core bulging is diastasis, and not all diastasis cases are severe. A proper evaluation, especially one performed by a pelvic health physiotherapy specialist, is key to diagnosis and recovery planning.

Causes: Why Diastasis Recti Happens

While pregnancy is the leading cause, diastasis recti can happen for several reasons:

1. Pregnancy

Diastasis is inevitable during pregnancy. Your growing belly puts pressure on the abdominal wall, stretching the connective tissue and causing the muscles to move apart and make room for your baby. Hormonal changes also soften connective tissue, allowing the separation to occur.

2. Improper Core Exercise

Exercises like crunches, planks, or heavy lifting performed with poor form can exacerbate abdominal pressure, especially if core weakness or poor breathing mechanics are present.

3. Chronic Pressure

Chronic coughing, constipation (straining), or frequent heavy lifting can create too much mismanaged intra-abdominal pressure over time.

4. Post-Surgical Weakness

Abdominal surgeries (like C-sections or hernia repairs) can compromise muscle integrity and slow down natural healing processes.

Why Diastasis Recti Is More Than Cosmetic

While many people seek treatment for DR to “flatten their tummy,” the genuine concern is the core function. The core doesn’t just refer to your abs; it’s an integrated system that includes your pelvic floor, diaphragm, back, and deep abdominal muscles.

When your core is disrupted by diastasis, it can:

• Weakened pelvic floor function, leading to bladder leaks
• Reduce spinal support, leading to low back pain
• Affect breathing mechanics and diaphragm efficiency
• Impair balance, movement control, and stability

This is why addressing DR is not just about aesthetics; it’s about restoring your body’s foundation.

How Is Diastasis Recti Diagnosed?

At Corelife Wellness, a diastasis assessment is done by a licensed pelvic health physiotherapist using gentle palpation techniques. The therapist will measure:

• Width of separation (how far apart the muscles are)
• Depth of the gap (how deep your fingers sink into your midline)
• Tension or firmness of the connective tissue

In some cases, ultrasound imaging or muscle function tests may be used to complement the evaluation.