Fasting Cuts Chronic Pain and Anxiety in New Study

Millions of people living with chronic pain may have a surprising new tool for relief, and it doesn't come in a pill bottle.

Researchers at the First Affiliated Hospital of Zhengzhou University in China found that intermittent fasting dramatically reduced both chronic pain and its mental health impacts in mice. The study reveals a powerful connection between our gut bacteria and our brain that could transform how we treat persistent pain.

Chronic pain affects millions worldwide, and it rarely travels alone. People suffering from ongoing pain face heightened risk of anxiety and depression, yet most treatments only address one problem or the other. This new research suggests that might be the wrong approach.

The scientists studied mice with different types of long-term pain over 38 days. Some mice alternated between eating days and fasting days, while others ate normally throughout. The fasting mice showed reduced pain sensitivity and significantly less anxiety-like behavior compared to the control group.

But the real breakthrough came when researchers discovered why fasting worked. They found that a specific gut bacteria called Alistipes finegoldii increased dramatically in fasting mice. This bacteria produces a compound called hippuric acid, which triggers an anti-inflammatory pathway in the nervous system.

To test their theory, scientists gave the beneficial bacteria to non-fasting mice. The results were striking. These mice experienced many of the same pain-relieving and mental health benefits as the fasting group, without skipping a single meal.

The fasting mice also showed stronger gut barriers and reduced inflammation throughout their nervous systems. Their bodies were literally healing from the inside out.

The Bright Side

This research maps a clear pathway from diet to pain relief, giving scientists specific targets for new treatments. Future therapies might harness the power of gut bacteria without requiring patients to fast at all.

The findings build on growing evidence that our digestive system plays a crucial role in mental and physical health. What we eat, and when we eat it, may influence far more than we ever imagined.

While intermittent fasting isn't a cure-all, and more human studies are needed, the research offers genuine hope for people dealing with chronic pain and its emotional burden. The study appears in the journal Brain, Behavior, and Immunity.

One day soon, managing chronic pain might be as simple as supporting the right bacteria in our gut.