Why You're Always Tired: When Fatigue Means More Than Just Needing Sleep
You went to bed on time. You got a full night's sleep. And you still woke up feeling like you hadn't slept at all.
If that's a pattern for you rather than a one-off, it's worth paying attention to. Brittany Miles, Family Nurse Practitioner at Luke's Well Co in Scottsburg, IN, hears this constantly — and she's pretty direct about it: "We're taught as women that fatigue is normal. It's not."
When Fatigue Isn't Just Fatigue
Everyone gets tired. That's not what this is about.
This is about the kind of tired that doesn't respond to a good night's sleep, a slower weekend, or an extra cup of coffee. The kind where you're functioning, but just barely — getting through the day on autopilot and still hitting a wall by mid-afternoon.
That kind of fatigue is usually your body telling you something, not just asking for more rest.
Common Root Causes
There's rarely one single answer to chronic fatigue. A few of the most common culprits Brittany sees in her practice:
Hormone imbalance: Hormones regulate far more than mood and cycles — they affect energy production at a cellular level. When they're out of balance, fatigue is often one of the first symptoms to show up.
Adrenal issues: Chronic stress keeps your body running on cortisol for too long. Eventually, that catches up with you, and exhaustion becomes the baseline instead of the exception.
Nutrient deficiency: This one comes up more than people expect. Brittany has said she sees Vitamin D deficiency in roughly 80% of the patients she tests — most below 30, many below 20. "I had one patient whose level was a six," she said. "I asked her, how are you even functioning?" Low ferritin and iron are right behind it, especially in women, and often go unchecked because a standard iron panel can look normal even when ferritin — your iron storage — is depleted.
Thyroid dysfunction: The thyroid regulates metabolism and energy, and a sluggish one will absolutely leave you dragging. The problem is how it typically gets tested — more on that below.
Gut health: Your gut affects far more than digestion. Poor gut health can interfere with nutrient absorption, drive inflammation, and quietly contribute to the kind of fatigue that doesn't have an obvious source.
Why Standard Labs Often Miss This
Here's where a lot of people get stuck: they bring up their fatigue, get bloodwork done, and hear that everything looks normal.
The issue often comes down to what's actually being tested — and how. Thyroid panels, for example, are frequently limited to a single marker. "You just check a TSH," Brittany has explained. "No — it's so much more than just a TSH. You've got to check a T3, you've got to check a T4, sometimes you've got to check your reverse T3."
Iron tells a similar story. A standard iron level can come back fine while ferritin — the marker that shows how much iron your body actually has in reserve — is quietly low. Without checking both, the real cause stays hidden.
And hormones are particularly sensitive to timing. Testing at the wrong point in a cycle can show numbers that look completely normal, even when something is genuinely off. Brittany checks hormones during the luteal phase specifically, because that's when the picture is clearest.
"Normal" isn't always wrong. It's just sometimes incomplete.
How Functional Medicine Approaches Chronic Fatigue
Functional medicine starts from a different question than most appointments allow time for: not "what symptom needs managing," but "what's actually causing this."
That means a real conversation first — your full history, your symptoms, what's already been ruled out, what hasn't been tested correctly. From there, testing gets more specific and more targeted than a standard panel, based on what your particular picture is pointing toward.
The goal isn't a quick fix. It's a plan built around what's actually driving your fatigue, with follow-up to track what's working and adjust what isn't.
What Testing Looks Like at Luke's Well Co
Depending on what your history and symptoms suggest, testing may include:
Dutch testing — a comprehensive hormone panel that also shows how your body metabolizes those hormones, plus cortisol and melatonin
Comprehensive thyroid panels — TSH, T3, T4, and reverse T3 when needed, not just one marker
Iron and ferritin — checked together, since one can look fine while the other tells a different story
GI-MAP testing — for gut health and underlying digestive issues that may be driving fatigue or blocking nutrient absorption
Vitamin D levels — checked as a matter of course, given how common deficiency is in this region
From there, your plan might include targeted supplementation, lifestyle and nutrition adjustments, or other interventions depending on what's actually found.
Frequently Asked Questions: Chronic Fatigue and Functional Medicine in Scottsburg, IN
My doctor already ran bloodwork and said I'm fine. Why would this be different? Standard panels are designed to rule out disease, not to fully evaluate energy-related markers like ferritin, full thyroid function, or hormone balance at the right time in your cycle. Functional medicine looks at a more complete picture.
Is chronic fatigue always caused by one of these issues? Not always, but they're the most common root causes Brittany sees. A thorough intake helps narrow down which ones are worth investigating for you specifically.
How is fatigue-related testing different from a regular checkup? It's more comprehensive and more targeted. Instead of a single thyroid marker or a general iron check, testing is chosen based on your full symptom picture and history.
How long before I notice a difference? It depends on what's found and how your body responds to the plan. Some things, like correcting a significant Vitamin D deficiency, can move relatively quickly. Others take more time and consistency.
What does an initial consultation involve? A comprehensive visit to review your health history, symptoms, and goals, followed by a recommendation for any testing that makes sense for your situation. Initial consultations are $300; follow-up visits are $165.
Book a Functional Medicine Consultation
If you're tired in a way that rest doesn't fix, it's worth finding out why. Brittany is currently accepting new functional medicine patients at Luke's Well Co.
Call or text us at (812) 595-7967 to get started. Or book an appointment yourself here.
Medical suitability required. Results vary. This blog is for informational purposes only and is not intended as medical advice. Results vary. Medical suitability required.
