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EndurHealth · Science

Evidence over marketing.

Physician-reviewed articles on hormone optimization, longevity medicine, and the lab work that makes individualized treatment possible. Research citations on every claim.

All TopicsTestosteroneMenopauseEDWeight LossPeptidesHair LossLongevityThyroidSleep
Featured
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Testosterone

What Your Testosterone Numbers Actually Mean

Total T is just the start. Free testosterone, SHBG, and LH tell the real story — and most labs miss what matters.

7 min read·Dr. Maya Chen, MD · Endocrinology
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All articles

9 articles
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Menopause

Why Standard Care Misses Perimenopause

The transition can begin 10 years before your last period. Conventional "wait until menopause" advice leaves women without options for a decade.

8 min readRead →
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ED

Why ED Is Often a Cardiovascular Warning

Erectile dysfunction precedes a cardiovascular event by an average of 3–5 years in many men. Treating the symptom without checking the system is a missed opportunity.

6 min readRead →
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Weight Loss

GLP-1s, Beyond the Hype: What the Data Actually Shows

Semaglutide and tirzepatide are real interventions with real outcomes — and real considerations. Here is what the major trials demonstrate.

8 min readRead →
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Peptides

Peptide Therapy: Evidence vs. Marketing

BPC-157, CJC-1295, ipamorelin. The marketing is loud — the human evidence is more nuanced. Here is what we actually know.

7 min readRead →
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Hair Loss

DHT and Hair Loss: What Actually Works

Finasteride, minoxidil, dutasteride, oral combinations. The evidence is clearer than the marketing suggests — and timing matters more than products.

6 min readRead →
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Longevity

Why Biological Age Differs From Chronological Age

Two 50-year-olds can have a decade between their biological clocks. Here is what biological age testing actually measures — and what to do with the number.

7 min readRead →
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Thyroid

Why TSH Alone Misses 30% of Thyroid Cases

The standard thyroid test most doctors order tells you about pituitary signaling — not what your tissues are actually getting. A full panel costs little more and reveals far more.

6 min readRead →
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Sleep

The Hormone-Sleep Connection No One Talks About

Cortisol, progesterone, testosterone, and thyroid hormones all shape sleep architecture. Generic sleep advice misses the upstream causes.

7 min readRead →

Reading is a start. Lab work is the next step.

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