Permanent Ketosis: When a Tool Becomes a Metabolic Prison

by Laurent Glatz – for Athletic Carnivore

Ketosis has become a badge of honor. Some measure it, chase it, protect it as if simply producing ketones proves the body is functioning better. Yet human physiology was never designed to remain fixed in a single metabolic state. It operates by oscillation: mobilization, action, recovery, repair, sleep, fasting, feeding, stress, rest.

Ketosis is a tool. A powerful tool. But a tool can become a prison when it is turned into an identity.

Ketosis Is Not Always a Sign of an Optimal Body

Producing ketones means the liver is converting fats into usable fuel, especially when insulin is low and carbohydrates are limited. In certain contexts, this is remarkable: energy stability, reduced cravings, better hunger signals, decreased glycemic noise. For insulin-resistant profiles, it can sometimes be the first true metabolic silence in years.

But the presence of ketones doesn’t tell the whole story. You can be in ketosis and sleep poorly. In ketosis and low on salt. In ketosis and undereating. In ketosis and losing performance. In ketosis and operating under cortisol. The marker does not replace the reality on the ground.

The simplistic belief says: if ketosis is good, you must stay in it. Biology answers: it depends on what the body is trying to do.

Cortisol Forces Mobilization

As soon as stress rises, the body shifts. Intense effort, mental pressure, lack of sleep, conflict, excessive coffee, poorly timed training, prolonged calorie deficit: cortisol increases. Its role is to mobilize. It stimulates hepatic glucose production, supports alertness, releases substrates, prepares for action.

In this state, the body is not in deep repair mode. It is in availability mode. Trying to enforce perfect ketosis while the nervous system demands a stress response is demanding a physiology that doesn’t exist.

A carnivore athlete can very well function mostly on fats while having moments of glucose production. This is not a failure. It is normal. Intense effort is not metabolic meditation. It is a brutal demand.

The Problem Is Not Ketosis, It’s the Dogma

In a medical context, strict ketosis can have a precise purpose, notably in neurology or certain metabolic situations. But this is not the same logic as general optimization for an active adult. Therapeutic goals may justify strict constraints. Performance and sustainable health goals require a broader perspective.

The problem with permanent ketogenic dieting is that it confuses stability with rigidity. A person may refuse any variation, fear every gram of carbohydrate, panic at the slightest drop in ketones, even as their sleep deteriorates, libido drops, training suffers, or their relationship with food becomes obsessive.

This is no longer a strategy. It’s a fixation.

Athletic Carnivore: Ketosis as a Phase, Not a Religion

In the Athletic Carnivore approach, ketosis can serve as a restart, a clarification, a stabilization. It can help break sugar dependence, calm hunger, reduce compulsions, and restore a simple baseline. A lion phase can even be a radical tool to identify tolerances and reduce dietary noise.

But the goal is not to worship a molecule. The goal is to make the body readable. Some people will remain very low carb for a long time. Others will need a more gradual carnivore approach, higher fat, or a low-carb plan adapted to their sport and nervous system.

This is exactly the kind of difference the Athletic Carnivore questionnaire seeks to detect: not just what you eat, but how your body responds, compensates, recovers, and demands.

Metabolism Is a Rhythm

The body knows how to alternate. It burns fat, produces glucose, stores glycogen, repairs, mobilizes, sleeps, hunts, recovers. The modern problem is not that we sometimes leave ketosis. The modern problem is that many never leave hyperinsulinemia, snacking, sugar, stress, and inflammation.

Once this noise is reduced, the goal is not necessarily to remain fixed. The goal is to regain flexibility, power, calm, and recovery.

The real question is not: “Am I always in ketosis?” The real question is: does my metabolism still know how to change states without collapsing?

#Ketogenic #Ketosis #Carnivore #LowCarb #Cortisol #Performance #MetabolicHealth #AthleticCarnivore