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The Hidden Cost of Underfueling: What RED-S Does to Your Hormones

The Hidden Cost of Underfueling: What RED-S Does to Your Hormones

August 04, 2026 7 min read

A modest caloric gap doesn't just reduce workout energy — it triggers a coordinated hormonal shutdown. Here's how RED-S affects cortisol, testosterone, estrogen, thyroid, and DHEA simultaneously, and why standard bloodwork keeps missing it.

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Why You're Getting Slower (And It Might Not Be Aging)

Why You're Getting Slower (And It Might Not Be Aging)

July 31, 2026 7 min read

Declining performance despite consistent training isn't always overtraining or age — it's often RED-S. Here's what Relative Energy Deficiency in Sport actually is, who gets it, and why standard bloodwork keeps missing it.

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Hormone Lab Testing for Masters Athletes: What to Test and Why It Matters

Hormone Lab Testing for Masters Athletes: What to Test and Why It Matters

July 21, 2026 8 min read

Standard hormone panels weren't designed for athletes. Here's the complete testing framework naturopathic doctor Dr. Jason Barker uses for masters endurance athletes — what to order, why each marker matters, and how to read the pattern rather than isolated numbers.

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