Eterna: The Healthspan Room

Dr. Renée Allen on hormones, peptides, and longevity medicine — evidence-based guidance to restore your vitality and extend your healthspan at every stage.

The Healthspan Room Blog Posts

Why Summer Stalls Your Metabolism — And What Your Hormones Have to Do With It

Why Summer Stalls Your Metabolism — And What Your Hormones Have to Do With It

Why Summer Stalls Your Metabolism — And What Your Hormones Have to Do With ItDr. Renée Allen
Published on: 08/06/2026

You're eating the same foods and training just as hard. But your metabolism feels like it stopped cooperating the moment summer arrived. Here's what's actually happening — and why it's hormonal.

metabolismmetabolic healthsummercortisolinsulin resistanceGLP-1weight managementhormone optimization
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Why Your Skin Ages Faster in Summer (And How to Protect Your Results)

Why Your Skin Ages Faster in Summer (And How to Protect Your Results)

Why Your Skin Ages Faster in Summer (And How to Protect Your Results)Dr. Renée Allen
Published on: 05/06/2026

Summer heat, cortisol, UV exposure, and sleep disruption accelerate collagen degradation. Learn the difference between chronological aging and stress-accelerated depletion — and how hormonal optimization protects your skin.

skin agingcollagenestradiolcortisolsummer skinpeptide therapyhormones
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Why Your Metabolism Slows Down in Summer (Even When You're More Active)

Why Your Metabolism Slows Down in Summer (Even When You're More Active)

Why Your Metabolism Slows Down in Summer (Even When You're More Active)Dr. Renée Allen
Published on: 03/06/2026

Summer heat, poor sleep, and stress drain your body's ability to burn fat efficiently over time. Learn why summer plateaus happen even when you're doing everything right.

metabolismweight lossGLP-1summercortisolinsulin resistancemetabolic health
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