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What is Andropause? The Male Hormone Decline

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Andropause is the gradual, age-related decline in Testosterone that affects most men starting around the age of 40.

Unlike female menopause, it doesn’t happen on a fixed timeline or end in a single milestone.

If you’ve noticed changes in energy, mood, or libido as you’ve gotten older, you may be wondering whether Testosterone decline is the reason.

This article covers what andropause is, why it happens, how common it is, and how it’s diagnosed and managed.

What Is Andropause?

Andropause, sometimes called male menopause or age-related Testosterone decline, describes the slow drop in Testosterone that happens as men age.

The clinical term is late-onset hypogonadism. Research describes it as a gradual reduction in Testosterone production by the testes rather than a sudden hormonal shift.

How Common Is Andropause?

Andropause becomes more common as men move through their 40s, 50s, and 60s, though the degree of decline varies widely between individuals.

Not every man will develop symptoms significant enough to seek treatment, but the underlying hormonal decline itself is a normal part of aging for most men.

What Causes Andropause?

Testosterone is produced primarily by the testes, in cells called Leydig cells. Production naturally slows with age.

Testosterone declines by about 1 to 2 percent per year starting around age 40, which means low T symptoms tend to build gradually rather than appear all at once.

Sex Hormone-Binding Globulin (SHBG) also typically rises with age, which can reduce the amount of Testosterone that’s available for the body to use. SHBG binds tightly to Testosterone and renders it biologically inactive.

Other factors, including body weight, sleep quality, and certain health conditions, can accelerate this decline or make symptoms more noticeable.

How Is Andropause Different from Menopause?

Women experience menopause as a defined event, marked by the end of menstruation and a sharp drop in hormones. Once a woman enters menopause, her ovaries largely stop producing Estrogen and Progesterone.

This is a more extreme hormonal change than the gradual decrease men experience during andropause. That’s why andropause can go unrecognized for years: because men’s levels decline so gradually that patients may get used to their symptoms or assume they’re part of aging.

Symptoms are also often attributed to stress, nutritional deficiencies, or lifestyle rather than a hormonal deficiency.

What Are the Symptoms of Andropause?

Men with declining Testosterone commonly experience a range of physical and emotional changes.

  • Lower energy and increased fatigue throughout the day.
  • Reduced libido and erectile dysfunction.
  • Loss of muscle mass and increased body fat, especially around the midsection.
  • Mood changes, including irritability and a lower sense of motivation.
  • Difficulty concentrating or a general sense of mental sluggishness.

These symptoms often overlap with other conditions, which is why Defy Medical providers confirm the diagnosis with comprehensive lab testing rather than symptoms alone.

How Is Andropause Diagnosed?

Diagnosis starts with bloodwork.

Defy Medical providers evaluate Free and Total Testosterone levels to understand how Testosterone is functioning in the body. We also evaluate:

  • Sex Hormone-Binding Globulin (SHBG), which determines how much Testosterone is bound versus available for the body to use.
  • Luteinizing Hormone (LH), which signals the release of Testosterone.
  • DHEA-Sulfate, a precursor hormone that also declines with age and contributes to overall hormonal balance.
  • Prostate Specific Antigen (PSA), a baseline safety marker checked before starting treatment.
  • Thyroid Stimulating Hormone (TSH), which screens for thyroid issues that can mimic low T symptoms.
  • Estradiol, Sensitive, which measures Estrogen using a precise assay built for the lower ranges typical in men.
  • Complete Blood Count (CBC), which checks red blood cell counts and overall blood health.
  • Complete Metabolic Panel (CMP-14), which evaluates kidney and liver function, electrolytes, and blood sugar.
  • Lipid Panel, which measures cholesterol and triglycerides tied to cardiovascular risk.
  • Insulin-like Growth Factor 1 (IGF-1), a marker used to assess growth hormone activity and metabolic health.

Our providers look at the full picture before building a treatment plan.

Does Every Man Need Treatment for Andropause?

A low lab value doesn’t automatically mean treatment is necessary.

That’s why our providers take symptoms and patient goals into account alongside comprehensive lab testing. Some men experience severe andropause symptoms and seek to address them, while others experience fewer noticeable issues.

Defy Medical believes hormone care should be guided by the patient’s needs and response to treatment.

What Happens If Andropause Goes Untreated?

Untreated Testosterone decline doesn’t resolve on its own, and it can gradually affect quality of life. Symptoms typically persist and worsen over time.

Prolonged low Testosterone has been associated with reduced bone density, increased body fat, ongoing sexual dysfunction, increased risk of type 2 diabetes, and greater cardiovascular risk factors.

Can Lifestyle Changes Alone Reverse Andropause?

Lifestyle habits like strength training, quality sleep, and maintaining a healthy body weight can support healthy Testosterone levels, but they don’t reverse age-related production decline. 

For men with clinically low Testosterone and corresponding symptoms, lifestyle changes tend to work best alongside Testosterone Replacement Therapy (TRT).  

Testosterone Replacement Therapy with Defy Medical

Defy Medical has spent years helping men address the symptoms of declining Testosterone with individualized, lab-guided care.

Patients begin with a consultation and comprehensive labs, and our providers build a protocol tailored to the patient’s goals, with ongoing monitoring to track progress.

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