Low libido: when the brain is the issue
Dr. Jonathan Pierce, PhD: Clinical Psychologist & Neuroscience Specialist
Oct 19, 2025 · 15 min read
Low libido in men is rarely just a testosterone issue. Here is how the brain, hormones, mood, and everyday habits interact to shape sex drive, and what actually helps when it stays low. “Desire starts in the brain. Testosterone is the fuel, but chemicals like dopamine and norepinephrine decide how much you care about sex ...