The Link Between Diastasis Recti and Lower Back Pain

Many people with lower back pain don’t realize the cause could be in their core. One common issue that leads to this pain is diastasis recti. It’s a condition where the two sides of the abdominal muscles separate.

This split weakens the core. When the core can’t support the spine, the lower back works harder to stay stable. Over time, that strain causes pain, tightness, and fatigue.

Diastasis recti often happens after pregnancy, but men and non-pregnant women can have it too. Rapid weight changes, poor lifting form, or high-intensity workouts can also stretch the abdominal wall.

A weak or stretched core changes how your body moves. Everyday actions like getting out of bed, lifting groceries, or standing up straight become harder. The back muscles step in to help, but they’re not built for that job alone.

The result is a sore, overworked lower back. It may feel tight after sitting or ache after a long walk. Some people also notice a bulge or gap down the middle of their stomach.

The good news is, you can fix it. Focus on core recovery, not crunches. Crunches and sit-ups make the gap worse. Instead, try gentle moves like pelvic tilts, heel slides, or deep belly breathing. These build strength without pressure.

Posture also matters. Sitting or standing with good alignment keeps pressure off the abdomen. Small changes, like keeping shoulders back and ribs over hips, make a big difference.

If pain sticks around, talk to a physical therapist. They can test for diastasis recti and build a plan for healing.

A strong, balanced core supports more than your abs. It protects your back, improves movement, and helps you feel steady again. Healing the split can often mean saying goodbye to back pain for good.