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7 Hidden Fatigue Causes (That Have Nothing to Do with Sleep)

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You’re not lazy, you’re running on empty. If you’re tired all the time, even after “resting,” it’s time to look beyond sleep and coffee.

Most chronic fatigue is driven by imbalances in hormones, nutrients, and cellular function. Here are the top fatigue causes we see in practice at Ask Dr Olz:

1. Hormonal Imbalance

Testosterone, thyroid, cortisol—all directly impact energy. Imbalances lead to poor energy regulation and mood swings.

2. Blood Sugar Crashes

Fluctuations from poor diet, insulin resistance, or skipping meals can cause dramatic energy dips and brain fog.

3. Mitochondrial Dysfunction

Your mitochondria—the tiny engines inside your cells—must function optimally to generate energy. If they’re sluggish, you’re sluggish.

4. Nutrient Deficiencies

Low levels of iron, vitamin D, B12, magnesium, or CoQ10 are hidden but powerful fatigue causes.

5. Chronic Inflammation

Whether from gut issues, toxins, or stress, inflammation forces your body to divert energy from daily function to “damage control.”

6. Poor Detox Pathways

If your liver is overburdened or sluggish, hormone and toxin build-up can leave you heavy, cloudy, and tired.

7. Disrupted Sleep Quality

Even if you’re in bed for 8 hours, hormone imbalances, stress, and poor recovery can rob you of deep sleep.

Restore Energy with Functional Nutrient Support

To recover from fatigue, you need to treat the root—not just mask symptoms. At Ask Dr Olz, we use clinically-proven functional nutrients to rebuild energy at the cellular and hormonal level.

Start with this core fatigue-fighting stack:

Testralin

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Supports testosterone balance and hormone detox—critical for male energy and stamina.

Zinc Glycinate

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Optimizes testosterone, immune function, and cellular repair.

Vitamin D3

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Essential for hormone regulation, mood, and mitochondrial energy.

CoQ10

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Powers mitochondrial function, cellular energy, and cardiovascular health.

MitoVive

A high-potency mitochondrial support powder with L-carnitine, taurine, magnesium, and antioxidants—ideal for deep energy recovery, muscle function, and daily stamina.

Glycogenics

A B-complex blend that supports healthy energy metabolism, reduces fatigue, and improves mental performance under stress.

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Other Helpful Supplements for Fatigue:

  • Mag Glycinate – improves sleep and reduces stress
  • Ultra Potent-C® 1000 – antioxidant protection and immune energy
  • OmegaGenics® EPA-DHA – lowers inflammation and supports brain function

All available at Ask Dr Olz’s supplement store

Your Body Is Tired for a Reason—Let’s Fix It

You weren’t designed to live on low battery. Let’s get to the root of your fatigue and rebuild your vitality from the inside out.


👉 Or book a virtual consult with Dr. Olz for a full functional medicine energy plan.

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Picture of Dr. Olwethu Sotondoshe
Dr. Olwethu Sotondoshe

My mission is to empower individuals to achieve optimal health through holistic and integrative care. We are committed to providing personalized telehealth consultations and premium wellness products that support and enhance your well-being.

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