Lactate is your friend—not your foe. In fact, lactate infusion has been shown to improve cognitive and brain function in patients with traumatic brain injury. Yet, many clinicians still view elevated lactate with alarm, focusing on bringing the number down rather than understanding what it truly represents.
I am Paul Marik from the USA, and I gave three lectures during this conference:
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One on the Surviving Sepsis Campaign,
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Another on the use of vasopressors, and
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The third on lactate physiology and interpretation.
Here’s the core message from that last talk: You should not be targeting your therapy just to reduce lactate levels. Instead, target the patient—treat the underlying problem. Give antibiotics, initiate supportive care, manage fluids and vasopressors appropriately. And as the patient improves, the lactate will naturally come down.
The goal of my presentation wasn’t to give all the answers—you can’t do that in 15 minutes. My real aim was to provoke thought, to challenge assumptions, and to make people reconsider what they think they know.
If I’ve succeeded in raising awareness—if someone goes home questioning the lactate dogma, reading more, and exploring the topic for themselves—then I’ve done my job.
Now, people often ask: If lactate is protective, why is it so strongly correlated with mortality? And the answer is simple—correlation is not causation. Lactate is a marker of disease severity. The sicker you are, the more lactate your body produces. But it’s not the lactate that’s killing the patient—it’s the severity of the underlying disease.
If you were to block lactate production in these critically ill patients, you’d likely see them deteriorate even faster. Because lactate is part of the adaptive response, not the problem itself.
Let me give you a comparison:
“Trump is stupid. Trump is American. That doesn’t mean all Americans are stupid.” It’s an association, not a cause-and-effect relationship. The same applies to lactate and mortality.
So yes—I’m challenging conventional wisdom. Many clinicians are trained to believe that “A” is correct, and never even consider “B.” These beliefs become dogma, almost religion, and when someone questions them, it creates discomfort.
But that discomfort is good. It means we’re thinking. I’m not claiming to have all the answers—but I hope I’ve encouraged others to ask better questions, to challenge the status quo, and to see things from a different angle.