Low Testosterone: Signs, Causes & What to Do

Low T Is Not Just a Male Problem

While testosterone is often thought of as a "male hormone," it is critical for both men and women. Women produce testosterone in their ovaries and adrenal glands, and low levels can cause fatigue, low libido, muscle loss, and mood changes — symptoms often misattributed to aging, stress, or perimenopause.

Common Symptoms

Low testosterone symptoms overlap significantly with other conditions, which is why lab testing is essential for accurate diagnosis.

• ✓Persistent fatigue and low energy — even with adequate sleep
• ✓Low libido or sexual dysfunction
• ✓Brain fog, difficulty concentrating, poor memory
• ✓Loss of muscle mass, increased body fat (especially abdominal)
• ✓Mood changes — irritability, anxiety, depression
• ✓Poor sleep quality or insomnia
• ✓Joint pain and decreased recovery from exercise
• ✓Hair thinning (both scalp and body hair in men)

Common Causes

Testosterone decline is multifactorial. While age-related decline is normal (about 1% per year after 30), many lifestyle and environmental factors accelerate the decline.

• ✓Chronic stress — cortisol directly suppresses testosterone production
• ✓Poor sleep — testosterone is primarily produced during deep sleep
• ✓Obesity — fat tissue converts testosterone to estrogen via aromatase
• ✓Endocrine disruptors — plastics, pesticides, personal care products
• ✓Medications — opioids, statins, SSRIs can lower testosterone
• ✓Nutrient deficiencies — zinc, vitamin D, magnesium are essential for T production
• ✓Excessive alcohol consumption
• ✓Overtraining without adequate recovery

Essential Lab Testing

A single total testosterone level is not enough. A comprehensive hormone panel gives the full picture of what is happening and why.

• ✓Total Testosterone — the headline number, but not the full story
• ✓Free Testosterone — the bioavailable form that actually binds to receptors
• ✓SHBG (Sex Hormone Binding Globulin) — high SHBG binds testosterone, reducing free T
• ✓Estradiol (sensitive assay) — elevated estrogen from aromatization worsens symptoms
• ✓LH and FSH — determines if the problem is primary (testicular) or secondary (pituitary)
• ✓DHEA-S — adrenal androgen precursor
• ✓Prolactin — elevated levels suppress testosterone
• ✓Thyroid panel — hypothyroidism mimics and worsens low T symptoms

Treatment Options

Treatment ranges from lifestyle optimization to hormone replacement, depending on severity and root cause. Many men with borderline-low testosterone can significantly raise levels through lifestyle changes alone. For those with clinically low levels, TRT is often life-changing.

• ✓Lifestyle first: sleep optimization, stress management, resistance training, weight loss
• ✓Supplements: zinc, vitamin D, magnesium, ashwagandha, boron
• ✓Peptide therapy: CJC-1295/Ipamorelin can naturally boost GH and support testosterone
• ✓Clomiphene citrate: stimulates natural production (preserves fertility)
• ✓TRT: testosterone cypionate/enanthate injection, cream, or pellets

When to See a Provider

If you have multiple symptoms of low testosterone, get tested. Do not let a provider tell you your levels are "normal" if they are in the bottom 20% of the reference range and you have symptoms. Optimal is different from normal. A provider specializing in hormone optimization will interpret your labs through a functional lens and create a protocol tailored to your situation.