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5 Reasons Why Most Diets Fail

Updated: Nov 26


Hands holding a pink donut and red apple over a scale. Text: "5 Reasons Why Most Diets Fail." Logo: "Krembiel Natural Health, LLC."
Balancing Choices: Understanding the Challenges of Dieting and Why Many Plans Don't Succeed.

Why Most Diets Fail: Understanding the Real Causes


Have you ever wondered why most diets fail?

Perhaps you’ve tried every diet out there, only to be disappointed repeatedly. You work so hard, you’re so hungry, and you spend hours in the gym, all for just a few lost pounds. Or, maybe you’ve even gained pounds. It just doesn’t seem fair, but you’re definitely not alone.


Here are five reasons why most diets fail:


Reason #1 – Bio-Individuality: One Diet Cannot Fit All


It’s true that dieting works for some people. Many times, those people are the authors of books that tell you how you can lose weight, too. But, guess what? Your body is DIFFERENT. What worked for one person won’t necessarily work for you. This is called bio-individuality, and it’s one of five main reasons why most diets fail.


Bio-individuality is the combination of your metabolism, blood type, body structure, genetic heritage, personality, emotions and thought patterns that makes you unique. You are the only you that ever has and ever will live. How cool is that?


Most diets don’t account for all these variables. Some people function well on a vegan diet, while others might begin wasting away in the first week. Some people feel great eating whole grains, while others bloat up like a balloon. Why? Bio-individuality.


Reason #2 – Starvation Mode: When Eating Less Backfires


A second reason why most diets fail is called starvation mode. Many diets require a decrease in calories, an increase in physical activity or both. In order to live and function, we need calories (energy) from food. The optimal number of calories depends on a person’s bio-individuality. When we’re physically active, we expend more energy, and thus need more calories. But if the ratio between calories and physical activity shifts too far in one direction or the other, problems occur.


  • Too many calories - physical activity = weight gain

  • Too few calories + physical activity = starvation


Starvation mode isn’t simply feeling hungry. In fact, you may not feel hungry at all when your body is in a state of starvation. For a while, the weight may come off really fast, but eventually, your brain will tell your body, “Famine alert! Hold on to every bit of fat you can! We may never eat again!”


If you’re in starvation mode too long, you can experience some serious imbalances. And when you end your diet, all the weight will come back quickly, often bringing a few extra pounds with it.


Reason #3 – Nutritional Deficiencies: Not Enough of the Right Fuel


Starvation mode is related to a third reason why most diets fail: nutritional deficiencies. We eat food not just for the calories, but also for the nutrients within the food: protein, carbohydrates, fat, vitamins, minerals and phytonutrients. This is why food quality is so important. If you’re eating 2,000 calories per day, but those calories are coming only from soda and candy bars, you’ll get sick pretty quickly because soda and candy bars don’t contain sufficient nutrients.

Woman with a sad expression holds a fork with broccoli, surrounded by a plate of colorful vegetables and a measuring tape on the table.
Struggling with a balanced diet: A woman reflects on her food choices, highlighting the challenge of overcoming nutritional deficiencies.

Without a variety of foods, you won’t get the wide variety of nutrients you need for optimum health. Additionally, many people have digestive problems that inhibit absorption, thereby creating deficiencies. Nutrient deficiencies can turn into serious illnesses if dietary changes aren’t made.


Diseases caused by malnutrition, including scurvy, rickets, beriberi and pellagra, are mostly eradicated in first-world countries. But they can occur under the right conditions. Left untreated, they can be fatal.


 Reason #4 – Food Sensitivities: Hidden Inflammation That Stalls Progress

Food sensitivities are another reason why most diets fail. Along with artificial and processed food, food sensitivities create inflammation in the body, which can cause water retention and weight gain. Without knowing what food sensitivities you might have, the foods you eat could be keeping you away from your goal. Eliminating certain foods for a short period of time can help you determine whether you have any food sensitivities.


Reason #5 – Metabolic Imbalances: The Behind-the-Scenes Hormone Disruptors


The fifth reason why most diets fail is because they don’t solve metabolic imbalances, including insulin resistance, leptin resistance, low thyroid function, adrenal fatigue, yeast overgrowth, polycystic ovarian syndrome and more. These conditions might not show up in a blood test or have obvious symptoms, but they can derail your progress and make it nearly impossible to reach your goals.


Why the SHAPE Program Works When Diets Don’t



Two side-by-side photos show a man. Left: smiling at an event, wearing a suit and red tie. Right: holding a baby, in casual attire. Dates: 06/24/25, 08/24/25.
Greg C. Before & After Transformation

The SHAPE Program was created to address all of these issues. It’s not a diet. It’s a wellness program designed to help you reach your goals. Here’s how it addresses the 5 reasons why most diets fail:


  1. Bio-individuality. Because the SHAPE Program is only available through credentialed wellness practitioners, the program can be tailored specially for you. As a SHAPE practitioners I examine your health history so I can immediately address any potential challenges. With a baseline urinalysis and individualized guidance, you can hit the ground running in the right direction.


  2. Starvation. With follow-up urinalyses, I can detect starvation right at the start and make necessary changes to get your body the nutrition it needs. Instead of “Famine Alert!” your brain can say to your body, “All’s well here! Let that excess fat melt away.” This means that you can successfully get rid of excess weight and keep it off!


  3. Nutrient Deficiencies. The SHAPE Program includes a variety of whole, nutrient-dense foods. Your nutrient needs will be met because you’ll be eating a healthy balance of protein, fat and carbohydrates, all of which are full of vitamins, minerals and phytonutrients. If digestive issues or symptoms of deficiency do appear, I can help you add the right foods and supplements to solve the issue.


  4. Food Sensitivities. The Nutrition Protocol in Phase I of the SHAPE Program is very simple. This aids the cleansing process and helps you learn more about yourself and your body. You may not have known that your favorite food was causing a problem. By eliminating it, you’ll learn how good you can feel. As you reintroduce foods later in the program, you’ll learn what works for you and what doesn’t.


  5. Metabolic Imbalances. Being practitioner-guided is a key difference with the SHAPE Program. In your initial exam and health history, I can make connections and detect underlying issues behind your health problems or inability to lose weight. When these imbalances are detected, they can be treated, and you can finally move forward.


The SHAPE Program succeeds because it addresses the reasons why most diets fail.

Ready to stop dieting and start healing?


Two side-by-side photos labeled "before" and "after," featuring a woman smiling outdoors. Dates are 10/6/18 and 6/6/19 on a floral background.
Gwen Krehbiel, Founder of Krehbiel Natural Health and CNHP. She has a passion to help you ReClaim you SHAPE and health.

If you’re tired of quick fixes that don’t last and suspect there’s more going on beneath the surface—hormones, inflammation, metabolism—you’re exactly who I designed the SHAPE Program and my Unlock Your Hormonal Harmony: A Premium 4-Month SHAPE ReClaimed Journey for.


Your first step is a Self-Sabotage Breakthrough Session—a 60-minute consultation where we unpack why past diets have failed you, identify hidden imbalances, and outline a clear, personalized plan forward.


👉 Click HERE to schedule your Self-Sabotage Breakthrough Session and finally move beyond dieting into true, root-cause healing.









Medical disclaimer: This information is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Never disregard professional medical advice or delay seeking medical treatment. Medical conditions require medical care.



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