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Age-Related Hormone Decline

Also known as: Hormonal Aging · Endocrine Senescence

Age-related hormone decline is the gradual, predictable downshift of testosterone, estradiol, growth hormone signaling, DHEA, and thyroid axis sensitivity that begins in midlife. It is a physiological pattern — not a single disease — and is the substrate underneath many adult quality-of-life changes.

Medically reviewed
Dr. Laura Purdy · MD, MBA
Clinical Director, oMeds
Last reviewed
Overview

What you need to know

From roughly the mid-30s onward, multiple endocrine axes decline at predictable rates: testosterone (~1%/yr in men), DHEA, growth hormone pulsatility, ovarian estradiol production (women), and thyroid sensitivity. The result is a slow drift in body composition, recovery, libido, mood, and cognitive resilience. The optimization-medicine framing is preventative: track baseline biomarkers earlier, recalibrate against a defined cadence, and intervene where symptoms and biomarkers converge — not based on age alone.

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