The Warburg Shift in Glial Cells: Why Central Pain Gets Stuck

If your pain has become constant, spread out, and seems to live in your nervous system rather than at the original injury, there may be a cellular reason. Surrounding the nerves in your brain and spinal cord are support cells called glia that can flip into a kind of emergency metabolic mode — and in chronic pain, they can get stuck in it, broadcasting signals that keep your central nervous system locked in a pro-pain state. This article, part of our Hidden Drivers of Chronic Pain series, explains that switch and why it is treatable.

What glial cells are and how they change

Your neurons do not work alone. They are surrounded and supported by glial cells, including microglia, which act as the immune cells of the nervous system, and astrocytes, which provide support and regulation. When all is well, these glia maintain a calm, supportive environment for your neurons. But when there is nerve injury or chronic inflammation, the glia become activated and shift into a defensive, reactive state. Part of that shift is a dramatic change in how they produce energy.

The Warburg-like metabolic switch

When glia activate, they often undergo a metabolic reprogramming similar to something called the Warburg effect — the same metabolic switch famously seen in cancer cells. They shift away from the slow, efficient energy production of oxidative phosphorylation toward rapid, inefficient aerobic glycolysis. Why? Because this faster mode, though wasteful of fuel, provides the quick burst of energy needed to mount a rapid immune and inflammatory response. For an acute threat, that makes sense — but this inefficient mode produces high levels of byproducts, particularly lactate and other metabolites.

Why it keeps you hurting

Those metabolites are not just waste. They act as signaling molecules that keep the central nervous system in a pro-pain state. The glia in emergency mode are, in effect, chemically broadcasting a message to stay alert, stay sensitized, and keep hurting. The switch is supposed to be temporary. But in chronic pain, the glia can get stuck in this activated, Warburg-like state and fail to stand down. As long as they remain switched on, they keep producing the signaling metabolites that maintain central sensitization — the state where the central nervous system itself becomes amplified and pain is generated and sustained centrally, somewhat independent of the original site.

"In your head" reframed — and why that matters

The science of glial activation is one of the most important developments in modern pain research, with extensive evidence that activated microglia and astrocytes drive and maintain central sensitization. The metabolic reprogramming of these cells toward aerobic glycolysis is well documented, and the role of metabolites like lactate as signaling molecules is increasingly understood. So if you have been told dismissively that your pain is “in your head,” there is a profound irony: centralized pain genuinely does involve real, physical, metabolic changes in the cells of your nervous system. That does not mean it is imaginary. It means there is a mechanism — and a path.

How the Padda Institute approaches centralized pain

The aim is to calm glial activation and the central sensitization it drives. The way in is to reduce the inputs that keep the glia switched on: lowering the systemic inflammation, the metabolic dysfunction, and the peripheral pain signals that activate and reactivate these cells, using the full toolkit of this series. This means addressing the energy and inflammatory environment of the nervous system itself. As the drivers of glial activation are reduced, the glia have the opportunity to power down out of their pro-pain emergency mode, the central sensitization can begin to unwind, and pain that had become self-sustaining can loosen its grip. This is a practice-based approach to a real, biological process; individual results vary.

Frequently asked questions

What does it mean when pain becomes "centralized"?

Centralized pain means the central nervous system itself has become amplified and is generating and sustaining pain somewhat independently of the original injury site. According to the mechanism described in this video, activated glial cells stuck in a pro-pain metabolic state help keep the nervous system sensitized. It is a real, physical process, not something imaginary.

Is centralized pain permanent?

Not necessarily. The glial activation that maintains central sensitization is meant to be temporary, and the approach described here works to reduce the inputs that keep glia switched on so they can power down and the sensitization can begin to unwind. This is a practice-based approach to a documented biological process. Individual results vary.

Can medication or supplements calm glial activation on their own?

The approach described focuses on reducing the systemic inflammation, metabolic dysfunction, and peripheral pain signals that keep glia activated, rather than on any single drug. Do not start, stop, or change any medication without consulting your physician. Individual results vary.

Where are you located and how do I book?

Padda Institute Center for Interventional Pain Management, 4477 Woodson Road, Suite 100, St. Louis, MO 63134. Book at painmd.tv/appointment/ or call (314) 481-5000.

Key takeaways

• Glial cells (microglia and astrocytes) can shift into a Warburg-like energy mode that drives pain.
• This mechanism is well documented; activated glia are known to maintain central sensitization.
• The switch is meant to be temporary, so calming the inputs that keep glia active is the goal.
• If your pain feels centralized, there is a mechanism and a path — start at painmd.tv/appointment/.

Medically reviewed by Gurpreet Singh Padda, MD — Board Certified in Anesthesiology, Pain Medicine, Interventional Pain Management, Addiction Medicine, and Obesity Medicine. Last reviewed July 2026.

This article is educational and is not a substitute for evaluation, diagnosis, or treatment by a physician. Individual results vary. Do not start, stop, or change any medication without consulting your physician.

Gurpreet Singh Padda , MD, MBA, MHP