Patient Question

I'm always tired.

Fatigue that doesn't improve with rest is information. Energy is produced by your metabolism and delivered by your heart, lungs, and muscles — so when it runs low, there is usually a measurable link in that chain. The aim is to find it rather than push through it.

Energy is a physiologic process

Every cell makes energy from the fuel you eat and the oxygen you breathe. Problems anywhere in that system — how efficiently you burn fuel, how well oxygen reaches your muscles, how much muscle you have — show up as fatigue long before they show up on routine labs.

Measurable contributors we look for

Low cardiorespiratory fitness — when your capacity to use oxygen drops, ordinary days feel harder. Exercise testing measures this precisely.
Insulin resistance and blood-sugar swings — unstable energy supply produces afternoon crashes. See am I insulin resistant?
Low muscle mass — muscle is metabolically active tissue; losing it lowers your reserve. Sarcopenia is common and treatable.
Sleep, thyroid, iron, and nutrition — each has a specific, testable signature.

“Your labs are normal” isn't always an answer

Standard panels are designed to catch disease, not to explain why you feel depleted. A metabolic evaluation looks one layer deeper — at how your body actually produces and uses energy.

The NorthStar approach

How NorthStar approaches fatigue

We treat fatigue as a measurable output of your metabolism and fitness, not a vague complaint. We assess cardiorespiratory capacity, body composition, and metabolic markers, then identify which one is limiting your energy most — and build the plan around that.

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Common questions

Frequently asked

My bloodwork was normal — what else could it be?

Routine labs screen for disease but rarely measure fitness, muscle mass, or how efficiently you produce energy. Those often explain fatigue that standard panels miss.

Can fitness testing really explain tiredness?

Yes. Cardiopulmonary exercise testing measures how well your body delivers and uses oxygen — a direct driver of everyday energy and stamina.

Is fatigue from low muscle reversible?

Usually. Muscle responds to the right resistance and nutrition stimulus at almost any age, which is why we measure it before assuming it's just aging.

Understand what is limiting you.

Not all services are available yet. Telehealth appointments are anticipated to begin in late November 2026 for select patients. Please contact our office for additional information regarding eligibility and availability. In-person appointments and diagnostic testing are planned to begin in January 2027 at our Edina clinic.

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