The Functional Medicine Approach to Chronic Fatigue & Low Energy
Crafted by: Jonathan Chew

Introduction: Why So Many People Are Exhausted
Millions of people suffer from chronic fatigue, brain fog, and low energyβyet most conventional doctors overlook the root causes and prescribe stimulants or antidepressants instead of addressing the underlying issues.
π Did You Know?
β Chronic fatigue is often linked to gut health, adrenal dysfunction, and mitochondrial issues.
β Caffeine and sugar only mask the problem, leading to more crashes later.
β Functional Medicine restores natural energy by fixing nutrient imbalances, metabolism, and stress hormones.
π‘ In this guide, weβll explore:
β The hidden causes of chronic fatigue
β How Functional Medicine restores energy naturally
β The best foods, supplements, and lifestyle changes for sustained energy
The Root Causes of Chronic Fatigue
Fatigue is not just about lack of sleepβitβs a sign that your body is struggling with cellular energy production.
π Common Root Causes of Chronic Fatigue:
β Mitochondrial Dysfunction β The energy factories of your cells become inefficient.
β Adrenal Fatigue & Cortisol Imbalances β Chronic stress leads to burnout.
β Nutrient Deficiencies (B Vitamins, Iron, Magnesium, CoQ10) β Impairs energy metabolism.
β Blood Sugar & Insulin Resistance β Fluctuations cause energy crashes.
β Gut Dysbiosis & Leaky Gut β Reduces nutrient absorption & increases inflammation.
β Chronic Infections & Post-Viral Fatigue β Epstein-Barr virus (EBV), long COVID, Lyme disease.
β Toxin Overload & Poor Detoxification β Heavy metals, mold, and chemicals burden energy pathways.
π Example: A person with low energy despite sleeping 8+ hours may have mitochondrial dysfunction or insulin resistance.
Functional Medicineβs Energy Optimization Strategy

Instead of using stimulants (coffee, energy drinks), Functional Medicine boosts energy at a cellular level by addressing mitochondrial function, blood sugar, and adrenal health.
π How Functional Medicine Restores Energy Naturally:
β Replenishes depleted nutrients (B vitamins, magnesium, CoQ10)
β Heals adrenal fatigue & balances stress hormones
β Optimizes mitochondrial function to boost ATP (cellular energy)
β Supports gut health & detoxification to improve energy metabolism
π Example: A person with chronic brain fog & exhaustion might need CoQ10, adrenal support, and gut healing.
The Best Foods for Natural Energy
Energy comes from nutrient-dense foods that fuel mitochondria, balance blood sugar, and reduce inflammation.
π Top Functional Medicine Foods for Energy Production:
β
Protein-Rich Foods (Grass-Fed Meat, Eggs, Lentils, Wild Fish) β Provides amino acids for mitochondrial function.
β
Healthy Fats (Avocados, Nuts, Coconut Oil, Olive Oil) β Stabilizes blood sugar & supports brain function.
β
Magnesium-Rich Foods (Leafy Greens, Pumpkin Seeds, Dark Chocolate) β Enhances ATP production.
β
B Vitamin-Rich Foods (Eggs, Liver, Nutritional Yeast) β Critical for cellular energy metabolism.
β
Adaptogenic Herbs (Maca, Ashwagandha, Rhodiola, Ginseng) β Supports adrenal recovery & resilience.
π¨ Foods to Avoid for Chronic Fatigue:
β Refined Sugar & Processed Carbs β Causes energy crashes & inflammation.
β Artificial Sweeteners & Excess Caffeine β Disrupts gut health & worsens adrenal fatigue.
β Seed Oils (Canola, Soybean, Corn Oil) β Promotes oxidative stress & slows metabolism.
π Example: A person with low energy & cravings for sugar may need more protein & healthy fats for blood sugar balance.
Mitochondrial Health: The Key to Energy & Longevity

β Mitochondria are the energy factories of your cells.
β When they become damaged (due to stress, toxins, or aging), energy levels drop.
π How to Boost Mitochondrial Function for More Energy:
β
CoQ10 & PQQ β Supports mitochondrial repair & ATP production.
β
Alpha Lipoic Acid (ALA) & Acetyl-L-Carnitine β Enhances fat metabolism for energy.
β
Intermittent Fasting & Ketogenic Diet β Stimulates mitochondrial biogenesis (new mitochondria formation).
β
Cold Therapy (Ice Baths, Cryotherapy) β Improves mitochondrial efficiency & fat burning.
π Example: Studies show that CoQ10 supplementation reduces fatigue & improves mitochondrial function.
Healing the Adrenals & Cortisol for Sustainable Energy
β Chronic stress depletes the adrenal glands, leading to cortisol dysregulation, low energy, and burnout.
β Functional Medicine supports adrenal recovery through adaptogens, nutrition, and lifestyle changes.
π How to Restore Adrenal Health for More Energy:
β
Reduce Caffeine & Sugar β Prevents cortisol spikes & crashes.
β
Use Adaptogens (Ginsenoside, Holy Basil, Rhodiola) β Helps balance stress hormones.
β
Prioritize Deep Sleep (7-9 Hours Per Night) β Supports adrenal repair.
β
Magnesium & Vitamin C β Essential for adrenal hormone production.
π Example: A person with chronic stress & afternoon energy crashes may need adaptogens & cortisol-balancing nutrients.
The Gut-Fatigue Connection: Fixing Leaky Gut to Boost Energy
β A damaged gut reduces nutrient absorption, causing fatigue.
β Leaky gut & dysbiosis contribute to chronic inflammation & brain fog.
π How to Heal the Gut for More Energy:
β
Add Probiotics & Fermented Foods β Improves microbiome balance.
β
Support Digestion with Enzymes & Apple Cider Vinegar β Helps absorb energy-boosting nutrients.
β
Remove Processed Foods & Artificial Sweeteners β Avoids gut disruptors.
π Example: People with bloating & fatigue often feel better with gut-healing protocols.

Functional Medicineβs Chronic Fatigue Recovery Plan
π Step 1: Identify the Root Cause β Test for nutrient deficiencies, mitochondrial function, and adrenal health.
π Step 2: Optimize Diet & Nutrient Intake β Eat whole, nutrient-dense foods & avoid energy-draining foods.
π Step 3: Support Mitochondria & Energy Metabolism β Use CoQ10, ALA, magnesium, and L-carnitine.
π Step 4: Heal the Gut & Improve Nutrient Absorption β Add probiotics & gut-supportive foods.
π Step 5: Reduce Stress & Optimize Sleep β Manage cortisol, practice breathwork, and prioritize recovery.
π Want a personalized Functional Medicine plan to regain energy?
π Schedule a consultation today to fix chronic fatigue naturally!