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How Do You Know That a Diet Doesn't Work?

Writer's picture: Orsolya SzathmariOrsolya Szathmari

Woman smiling, holding a plate of sliced cured meat. Background shows rustic indoor setting with brick walls and archways.
Iberico Ham

Navigating the world of diets can feel like trying to find your way through a maze blindfolded. With every diet claiming to be the ultimate solution to weight loss, improved health, or both, how does one discern if a diet truly isn't working or if it's just not being done correctly? Let's explore this puzzle.


Understanding Diet Efficacy

First, let's clarify what we mean by a "diet not working." Typically, this could mean:


  • Weight Loss: The primary goal for many is weight reduction, so if the scale doesn't move despite adherence, questions arise. However, the opposite can also be true: losing too much weight and becoming pathologically underweight is also a bad sign.

  • Lack of Health Improvements: Diets often promise benefits like better blood sugar control, more energy, reduced inflammation and pain, better sleep and so on. If these parameters aren't improving, the diet might be failing in its health claims.

  • Sustainability Issues: If a diet is too restrictive or difficult to maintain, leading to yo-yo dieting and periodic overeating, it's not practically effective.


Myths About Diet Failure

There's a pervasive notion that if a diet doesn't work, it's because:


  • You're Not Doing It Right: This suggests that every diet has a "correct" way, and any deviation leads to failure. While details do matter it's not always about doing it “wrong." Sometimes people do exactly how they are supposed to do it and it still doesn’t work.

  • You Haven't Done It Long Enough: Patience is indeed crucial, as some diets require time for the body to adapt. However, there's a limit to how long one should wait for results, especially if the diet is causing more harm than good.


Signs a Diet Might Not Work for You

Here are some indicators that a diet might genuinely not be suitable for you:


  1. Stagnant Health Metrics: If, after a reasonable period (often considered 6-12 weeks for noticeable changes), there's no improvement in measurable health parameters like blood pressure, weight, symptoms, blood sugar or inflammatory markers, the diet might not be effective for you.

  2. Physical and Mental Strain: Diets should not cause undue stress, hunger, or lead to compulsive eating behaviors. If you're feeling drained, unhappy, or if the diet is affecting your mental health, it's not working in the holistic sense.

  3. No Weight Loss or Inappropriate Weight Loss: If you're not losing weight despite strict adherence, or if the weight loss is too rapid and excessive, these are signs to reconsider the diet.


When to Quit or Adapt

  • Give It Time: Allow up to 8-12 weeks for noticeable changes. In some cases you might need to wait even a bit longer than that.

  • Listen to Your Body: Constant hunger, energy slumps, or mood swings are your body's way of signaling that something isn't right.

  • Adapt, Don't Abandon: Sometimes, tweaking the diet rather than abandoning it can yield better results.

  • Seek Professional Guidance: Nutritionists or dietitians experienced with the diet you are following can offer substantial help.


Conclusion

The assertion that "you're not doing it right or long enough" can sometimes be true, but it's not a universal explanation for diet failure. Depite imany like to believe, diets are not one-size-fits-all; what works for one might not work for another due to different factors.


Recognizing when a diet isn't working involves a mix of patience, self-awareness, and sometimes professional input. It's about finding balance, not just in what you eat but in how your diet fits into your life and health goals. Remember, the best diet is one you can maintain for life, not just until you hit a temporary goal.


During the last 14 years of my career as a nutritionist, I haven't found any specific diet that always works for everyone. Therefore, in my opinion, there is always room for changes and adaptations to meet individual needs.

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