How to Avoid Paying for Problems Invented by Blood Tests

HOW TO AVOID PAYING HUNDREDS OF EUROS FOR A PROBLEM INVENTED FOR YOU

Your body isn’t read on a sheet of paper. It’s read through your reactions.

by Laurent Glatz – for Athletic Carnivore

You walk into the office. You explain your fatigue, your cravings, your stagnant weight. The practitioner listens for five minutes, nods, then delivers the phrase meant to trigger a reaction: “Before we move forward with anything, you need a full blood panel. I’ll give you the lab address.” No questions about your sleep. No questions about your stress. No questions about how you react when you’re tired, rushed, or the fridge is empty. Nothing. Just a prescription sheet for five to eight tests, and the address of a private lab. At this point, you’re no longer a patient. You’re a prospect. And what’s about to be sold to you isn’t an understanding of your terrain. It’s a sheet of numbers interpreted to make you pay.

Here’s the first warning sign, one we learn to ignore because it’s dressed up as quality care. When a practitioner sends you to a specific lab, often a “partner” or “recommended” one, without discussing your life context, temperament, or dietary history, they’re not trying to understand you. They’re setting up a commercial transaction. The mechanism is well-oiled. You pay for the panel—between 150 and 800 euros depending on the scope. You come back with your results. And no matter what’s written, the interpretation always goes the same way: you have an imbalance. Your cortisol is “a bit low” or “a bit high.” Your insulin “could be optimized.” Your LDL cholesterol level “is concerning for your age.” Your genetic profile reveals “sensitivities” you hadn’t felt until now. Every number becomes a problem to fix. And every problem becomes a protocol to sell.

Second warning sign: the practitioner who uses the results to justify an immediate purchase of a plan. “With these levels, we can’t put you on a standard protocol. You need something personalized.” This is exactly the opposite of the scientific approach. A blood test, when relevant, serves to confirm or refute a clinical hypothesis already established by anamnesis. Not to replace anamnesis. If the practitioner didn’t try to understand your terrain before making you pay for tests, they won’t understand anything more afterward. They’ll just have numbers to interpret in a way that sells you the next step. And the real personalization, the one that matters, isn’t found in your veins. It’s found in how you function instinctively.

Third, more insidious warning sign: denying your feelings in favor of the paper. “You say you feel fine, but your morning cortisol says otherwise.” Or the reverse: “You complain of fatigue, but your tests are normal, so the problem must be elsewhere. Let’s do a broader panel.” In both cases, the message is the same: your body doesn’t know what it’s saying, but the lab sheet does. And of course, this sheet needs to be supplemented by other tests. A genetic test to “refine.” A food intolerance test to “complete.” A 24-hour saliva cortisol follow-up to “see the curve.” Each layer costs money. Each layer pushes back the real question: how do you function when under pressure? When you’re hungry? When you’re tired? When you have to decide what to eat without time to think? These answers define your terrain, not a fasting number taken on a Tuesday morning.

Fourth warning sign: total disregard for the sampling context. No one asks what time you woke up. No one asks if you’re afraid of needles—which alone can spike your cortisol and adrenaline in seconds, artificially altering your blood sugar, lipid profile, and several inflammatory markers. No one checks if you really fasted twelve hours or if you did an intense workout the day before. No one explains that your fasting insulin level also depends on the fasting duration, and that too long a fast can induce hepatic glycogenolysis that skews the result. The practitioner takes the number, compares it to a rigid grid, and makes a commercial diagnosis. Meanwhile, what really makes the difference—your way of managing stress, your relationship with food, your behavior under fatigue, your tendency toward rigidity or impulsivity—remains in the shadows. Because it can’t be measured in a tube. It’s read in a neuroprofile.

Fifth and most blatant warning sign: tied sales. Blood test at the recommended lab. Interpretation of the panel. Personalized dietary protocol sold. Supplements to “correct” the imbalances found. Follow-up appointment to redo tests in three months. You came in for fatigue. You leave with a subscription. And worst of all: you feel like you’ve done a preventive act. In reality, you paid for a physiological snapshot taken on a stressed Tuesday morning, maybe after a bad night, interpreted as if it represented your chronic metabolism. You were sold numbers. You weren’t told how you function.

The biological mechanism these practitioners exploit is simple. The human body isn’t a stable machine. Your cortisol varies by 50% within the same day. Your blood sugar fluctuates depending on your sleep, stress, recent physical activity, even ambient temperature. Taking a single blood sample and making a health portrait from it is like photographing the sea at one moment and deciding the year’s weather. It’s scientifically absurd. It’s commercially brilliant. But what this system deliberately ignores is that two people can have exactly the same results on paper and totally opposite realities. One has a morning cortisol of 500 because they sleep eight hours and have a stable rhythm. The other shows the same number because their HPA axis is exhausted and they compensate with an artificial morning spike. The paper doesn’t say the difference. Only instinctive functioning does. How you react to stress, hunger, frustration, social pressure—that’s where your true terrain is read.

This isn’t a crusade against biology. It’s a call for common sense. A blood test has its place when it’s targeted, justified, and interpreted in a solid clinical context. But when it becomes the systematic prerequisite for any care, when it’s prescribed before even knowing you, when it’s interpreted to sell you the next step, it’s no longer medicine. It’s commerce dressed as science. And the commerce that really matters, the one that moves you forward, isn’t the numbers in your veins. It’s the understanding of your own functioning.

If you recognize yourself in this mechanism—if you’ve already paid for tests that left you more confused than before, more dependent on outside opinions, less able to read your own signals—the real question isn’t to do a more complete panel. It’s to understand how you function instinctively. Because it’s this reading, and only this one, that will allow you to know if carnivore, low carb, fasting, or exercise will suit your terrain or stress it even more.

Is your body refusing to speak to you, or have you just accepted paying to be told a story from a snapshot instead of understanding how you really react?

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