Start with the symptom.

Most people don't show up wanting "TRT" or "HRT." They show up exhausted, foggy, gaining weight they didn't gain at 30. Pick the symptom, we'll show you the actual cause and the lab and protocol path.

All symptoms
Men
Women
Metabolic
Sleep / Recovery
Energy

Low energy / chronic fatigue

It's almost never just "stress." Low T, low thyroid, insulin resistance, low ferritin, low B12, and the lab panel that catches all of them.

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Sexual health

Low libido

The first thing to drop when something's off hormonally. The labs that distinguish low T, low estradiol, high SHBG, prolactin, and thyroid.

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Cognition

Brain fog

Thyroid, perimenopause, insulin resistance, low estradiol, low T, B12 / methylation. Each has a different fix.

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Body composition

Weight gain after 40

The metabolism doesn't break, the hormonal context shifts. The 4 most common drivers and the protocols that move them.

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Women · Perimenopause

Hot flashes

Almost always declining estradiol. The labs to confirm and the transdermal protocol most clinics still get wrong.

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Women · Sleep

Night sweats

Nightly waking soaked? It's perimenopause until proven otherwise. Why progesterone alone often resolves it.

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Sleep

Poor sleep / can't stay asleep

Sleep is downstream of cortisol, progesterone, GH, and blood sugar. The pattern of waking tells you which one.

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Men · Sexual health

Erectile dysfunction

Vascular vs. hormonal vs. neurological. Why the right workup is labs first, not a PDE5 prescription.

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Body composition

Belly fat that won't budge

Visceral fat is metabolic, not caloric. Insulin resistance, cortisol, low T, low estradiol all drive it. Each has a fix.

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Mood

Mood changes / irritability / anxiety

Often the first signal of perimenopause, low T, thyroid, or chronic cortisol. The labs to rule each out.

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Joint & tendon

Joint pain / stiffness

Joint pain in your 40s and 50s isn't just "wear and tear." Estradiol decline and IGF-1 decline both drive it. So does inflammation.

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Recovery

Slow recovery from training

If your training quality is dropping with the same volume, recovery hormones are usually why. GH axis, T, and sleep architecture.

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Temperature

Always feeling cold

Feeling cold in a warm room can be thyroid, iron, anemia, or B12, or simply body composition. Labs tell treatable causes from normal physiology.

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Circulation

Cold hands and feet

Usually benign Raynaud's or being lean, sometimes thyroid, iron, circulation, or nerves. A panel separates benign from serious.

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Hair & skin

Hair thinning or shedding

Iron, thyroid, vitamin D, zinc, or a hormone shift, and why biotin is rarely the answer. Test for the real cause before supplements.

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Energy

The afternoon energy crash

Part normal circadian dip, part sleep debt, blood sugar, iron, or thyroid. Labs find what is stacked on top of the normal dip.

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Drive

Low motivation and lost drive

Most often mood, sleep, or burnout, which labs cannot treat. Testing rules out thyroid, iron, and B12 first. Not a substitute for mental-health care.

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Women's health

Irregular periods

PCOS, thyroid, prolactin, perimenopause, or low energy availability. Your hormone pattern tells which one. A panel reads them together.

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Immunity

Getting sick all the time

Most immune labs come back normal. Testing catches the fixable few, low vitamin D, iron, or blood sugar, and rules out the rare serious one.

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Heart

Heart palpitations

Bloods find the triggers, thyroid, iron, electrolytes, blood sugar. The rhythm itself needs an ECG. Palpitations with chest pain or fainting are urgent.

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Balance

Dizziness and lightheadedness

The lightheaded kind can be anemia, dehydration, blood pressure, blood sugar, or thyroid. Spinning vertigo is the inner ear, not a blood test.

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Muscles

Recurring muscle cramps

The magnesium and dehydration stories are weaker than you think. Testing rules out the causes that actually matter, thyroid, calcium, potassium, kidney.

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Hair & skin

Persistent dry skin

Most dry skin is environmental, not a lab problem. Testing is for the minority with a thyroid, blood-sugar, kidney, or nutritional signal.

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Nerves

Tingling and numbness

Gradual pins-and-needles can be diabetes, B12, B6, or thyroid. Sudden one-sided numbness is a stroke emergency, call for help.

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Stop guessing. Start with labs.

Symptoms point you toward the right questions. A blood panel gives the answers, so you and a physician can work from real numbers instead of a hunch.

See blood panels → Explore the Apex Panel
Weight-loss medication disclaimer

OPTML offers compounded semaglutide and tirzepatide, prescribed and overseen by U.S.-licensed physicians. Compounded drug products are not approved or evaluated for safety, effectiveness, or quality by the FDA. OPTML is not associated with, endorsed by, or affiliated with the manufacturers of FDA-approved branded weight-loss medications, and does not sell or supply those branded products. Anyone interested in an FDA-approved branded medication should consult a licensed healthcare provider or pharmacist. Individual results vary; no specific result is promised, and weight management requires ongoing medical guidance.

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