Depression in men is under-diagnosed, partly because men are less likely to seek help, and partly because male depression often presents differently — as irritability, anger, risk-taking behaviour, or social withdrawal rather than the classic low mood and tearfulness more commonly recognised and screened for.

Testosterone’s Role in Mood Regulation

Testosterone receptors are distributed throughout the brain, with particularly high concentrations in the limbic system — the region responsible for emotional regulation. Low testosterone is associated with reduced dopamine signalling, which directly impacts motivation, reward, and positive emotion. Several meta-analyses have found a consistent association between low testosterone and increased risk of clinical depression in men.

This has practical implications: if a man’s depression is partly or primarily hormonal in origin, standard antidepressants alone may provide incomplete relief. Addressing the underlying testosterone deficiency — which connects directly with concerns covered in our guide to low testosterone after 40 — is likely to be part of the solution.

The Brain Under Oestrogen Imbalance

Elevated oestrogen in men has its own cognitive and emotional effects. Brain fog, difficulty with concentration, emotional sensitivity, and fatigue are common complaints in men with oestrogen dominance — symptoms that are frequently attributed to stress, ageing, or burnout rather than a correctable hormonal cause. The full picture of high oestrogen in men covers the mechanics behind this in detail.

Cortisol: The Stress-Hormone Chain Reaction

Chronic psychological stress activates the HPA (hypothalamic-pituitary-adrenal) axis, producing elevated cortisol. Beyond suppressing testosterone production, cortisol at chronically high levels has neurotoxic effects on the hippocampus — the brain region responsible for memory and emotional context. This creates a compounding cycle: stress causes hormonal imbalance, which worsens mood, which generates more stress.

An Integrated Approach

Mental health and hormonal health are not separate systems. For men experiencing mood difficulties, a comprehensive evaluation that includes hormone testing alongside psychological assessment gives a far more complete picture. Therapies that improve physical vitality — including treatments like focused shockwave therapy for men, which addresses a major source of male self-confidence — can meaningfully support mental health outcomes alongside direct psychological interventions.