Testosterone

Testosterone is the primary male sex hormone, and its established medical use is to treat clinically diagnosed deficiencies (hypogonadism) to restore normal physiological function. Building on this role, its use is expanding into healthspan optimization to counteract the natural, age-related decline in hormone levels. In this context, the goal is not to treat a specific disease but to restore more youthful levels to preserve muscle mass and bone density, improve body composition, and support overall vitality.

Verdict

A powerful tool for male healthspan, but requires careful medical management.

Protocol

• Intramuscular Injection (e.g., Cypionate): 50-100mg weekly or bi-weekly.
• Topical Gel (1-1.62%): Applied daily to shoulders or abdomen.
• Dosage is titrated to achieve optimal physiological serum levels and symptom resolution.

Flags

• Requires ongoing medical supervision and regular blood testing (CBC, CMP, PSA, hormone panel).
• Can increase hematocrit (polycythemia), raising the risk of blood clots and stroke.
• Suppresses the body's natural testosterone and sperm production, causing infertility.
• May accelerate growth of pre-existing prostate cancer; regular PSA screening is necessary.
• Potential for adverse cardiovascular events is a subject of ongoing debate and research.
• Improper management can lead to high estrogen, causing side effects like gynecomastia and mood swings.
• Delivery method affects stable serum levels: injections can cause peaks and troughs, whereas daily topical gels provide more stable levels.