What Causes Persistent Fatigue?
There’s no single cause of fatigue, but many overlapping systems in the body can contribute when they’re not functioning well. Common root causes include:
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Thyroid dysfunction (hypothyroidism, subclinical hypothyroidism)
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Adrenal imbalance or cortisol dysregulation
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Nutrient deficiencies (iron, B12, vitamin D, magnesium)
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Sex hormone imbalance (low testosterone, estrogen shifts, perimenopause)
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Chronic inflammation or autoimmunity
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Poor sleep quality or circadian rhythm disruption
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Blood sugar dysregulation
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Gut health issues or food sensitivities
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Emotional stress, anxiety, or undiagnosed depression
Identifying the true cause requires looking beyond surface-level symptoms and exploring how your systems interact.
Fatigue vs. Burnout vs. Exhaustion
Many people confuse fatigue with feeling stressed, overworked, or just “busy.” While lifestyle plays a role, persistent fatigue often reflects a physiological breakdown in energy regulation. You may sleep 8 hours and still wake up tired, crash mid-afternoon, or feel too wiped out for basic activities—signs that something deeper may be going on.
How We Approach Fatigue at Aligned Modern Health
We don’t treat fatigue as a diagnosis—we treat it as a signal. Our approach starts with advanced diagnostic testing that can uncover root imbalances in thyroid, adrenal, and metabolic function. We also examine nutrient status, inflammatory markers, hormone levels, and gut health—all of which play key roles in energy production.
From there, your care plan may include:
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Targeted nutritional and lifestyle changes
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Supplement or herbal protocols
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Hormone support (if indicated)
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Stress recovery strategies and sleep optimization
Our goal is to bring your energy back in a sustainable, long-term way—not just offer a quick fix.
Common Signs of Underlying Fatigue-Related Conditions
Persistent fatigue may occur alongside other symptoms, including:
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Brain fog or difficulty concentrating
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Cold hands and feet
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Hair thinning or dry skin
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Mood changes or irritability
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Poor exercise recovery
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Cravings for caffeine, sugar, or salt
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Lightheadedness or low blood pressure
These can help point to whether your fatigue is hormonal, nutritional, or adrenal in nature.
When Fatigue Isn’t Normal: Age-Specific Clues
Fatigue can look different at every stage of life—but persistent, unexplained tiredness is never something to ignore. Here’s what’s typical by age group—and when it may signal a deeper issue:
Teens (13–19):
A certain level of tiredness is common due to growth, hormonal changes, and irregular sleep patterns. However, if a teen:
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Struggles to wake up despite 8–10 hours of sleep
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Naps daily but still feels exhausted
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Has declining academic or athletic performance
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Experiences mood swings or low motivation
…it could point to nutrient deficiencies, underactive thyroid, sleep disorders, or even early signs of burnout.
Young Adults (20s–30s):
Busy schedules, stress, and inconsistent routines are common in this age group—but persistent fatigue is not. Red flags include:
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Needing caffeine to function daily
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Feeling “wired but tired” at night
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Poor workout recovery
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Brain fog or declining focus at work
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Hormonal acne or irregular periods alongside fatigue
These could be signs of adrenal fatigue, poor blood sugar regulation, or post-viral syndromes.
Adults (40s–60s):
If you’re getting consistent sleep but still feel run down, something deeper may be happening. Common contributors include:
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Perimenopause or testosterone decline
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Chronic stress and elevated cortisol
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Low thyroid function (even if labs look “normal”)
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Gut health dysfunction and poor nutrient absorption
Fatigue may present alongside weight gain, mood shifts, or lower resilience to stress.
Older Adults (65+):
Slowing down is expected—but persistent fatigue should never be dismissed as simply “getting older.” Causes may include:
If fatigue interferes with daily tasks, social engagement, or cognitive clarity, it’s worth investigating.
You Deserve to Feel Energized
If you’ve been told “everything looks normal” but still feel run down every day, it’s time for a deeper look. Persistent fatigue is not just in your head—it’s your body asking for help. With the right insight and a personalized approach, real recovery is possible.