The Male Mind: Hormones, Identity and the Nervous System

At the centre of male physiology sits a regulatory network that is often overlooked until something goes wrong: the endocrine system. Endocrinologist and lead physician at Hooke London, Professor Pierre-Marc Bouloux, explains the importance of understanding hormones, “endocrinology deals with quite a lot of different organs and virtually all the tissues of the body are influenced by those hormones.” From energy regulation and metabolism to mood stability, libido and stress response, hormones are in constant flux, responding to sleep, nutrition, psychological load and illness. The difficulty is that when imbalance begins to develop, the symptoms are rarely distinct.

Fatigue, reduced motivation, low mood and cognitive fog are common presentations, yet they are often nonspecific. As Bouloux noted, “tiredness could be due to your adrenal glands not working or your thyroid not working.” This ambiguity means many men can sit in a prolonged state of suboptimal health without clear clinical triggers for investigation. Unlike conditions with obvious physical markers, hormonal decline in men can be subtle and progressive, often presenting as a gradual reduction in baseline wellbeing rather than a sudden change.

And, its important to note that endocrine changes can manifest in ways that are easily attributed to personality or stress rather than underlying physiology, Boloux explains, “the symptom that correlated most with… low testosterone levels was grumpiness.” So whilst reduced libido, lower energy, decreased muscle mass and mood variability are well recognised, some of the more overlooked indicators are behavioural rather than physical.

So what can we do to support during this time of change? In recent years, testosterone replacement therapy and hormonal “optimisation” have become more visible, often positioned within lifestyle and performance culture. However, there is an important clinical distinction between restoring physiological balance and attempting to enhance it beyond normal range. As Bouloux explained, when it comes to libido, “by the time you get to [testosterone levels of] about 12 to 13, libido will be restored… there’s no evidence that a man who has a testosterone level of 28 has more sexual activity than one who has level of 11.” The implication is that treatment should aim to return the body to equilibrium rather than push it beyond its natural set point. When testosterone is increased unnecessarily, the consequences can include acne, hair loss, cardiovascular strain and mood disturbance. The objective, therefore, is not maximisation but stability.

While hormonal factors are often central to discussions of male health, lifestyle remains one of the most significant and modifiable influences. “Lack of sleep… being obese… excessive exercise… even depression… can impact… testosterone levels” Bouloux explained. These factors reflect the conditions of modern life: chronic stress, irregular sleep, reduced physical recovery and dietary inconsistency. Although rarely considered in isolation, their cumulative effect places sustained physiological pressure on the body, influencing hormonal regulation over time.

Beyond biology, there is also the question of perception and identity. Oculoplastic surgeon and aesthetic doctor, Professor Jonathan Roos, highlighted the often under-acknowledged role of visual self-perception in men’s wellbeing. “Men are surprisingly superficial when they first meet people.” This observation is less about vanity and more about how rapidly visual information is processed in social interaction, and how internalisation of appearance can shape confidence.

Increasingly, clinics are seeing men seeking aesthetic treatment not purely for cosmetic reasons, but due to a disconnect between how they feel internally and how they perceive themselves externally. “They see something in the mirror and think that’s not who I feel like I am inside.” Over time, this misalignment can subtly influence behaviour, confidence and social engagement. There is also a bidirectional relationship between physical change and emotional state, explains Roos, “there’s a feedback loop… if you change those [facial features], you can actually change the underlying emotion.” This suggests that perception of self is not static, but responsive to external alteration, reinforcing the idea that physical and psychological states are deeply interconnected rather than separate domains.

Alongside hormonal and identity-related factors, the nervous system plays a central role in how these influences are experienced. Breathwork and performance coach, Rob Rea, described breath as a direct mechanism for modulating internal state: “breathwork… is the deliberate controlled manipulation… of your breath… to induce a state change.” Through regulation of the autonomic nervous system, breathwork influences the balance between sympathetic activation and parasympathetic recovery. Yet for many men, the dominant pattern is chronic activation, a persistent “go, go, go” state that becomes normalised over time. This sustained stress response can gradually reduce emotional awareness and limit the ability to process internal signals effectively.

In some cases, when this system is interrupted, the response can be profound. Rea describes how high-performing individuals engaging with breathwork for performance purposes can experience significant emotional release, such as crying for the first time in 10 years. Rea describes this as reconnection: “it’s good to feel everything… it’s not human not to.” The implication is that emotional suppression is not absence of feeling, but restriction of access to it.

The conversation also extends into how masculinity itself is understood. Rob explain that what is often labelled as “toxic masculinity” can be described in more nuanced terms, with emphasis on underlying emotional drivers, “where I’ve seen toxic masculinity, it usually comes from some deep insecurity.” This is further complicated by modern comparison culture, “we used to compare ourselves to our community… now we’re comparing ourselves to fantasies”, explained Rea. The shift from local, attainable reference points to idealised digital imagery has intensified pressure on self-perception and identity formation.

Rea explains that rather than focusing on suppression or avoidance of emotion, the emphasis increasingly moves towards capacity: “it’s not about… reducing anxiety… it’s about… nervous system resilience.” This reframes emotional wellbeing not as the absence of stress, but the ability to remain regulated within it.

Ultimately, the male mind cannot be understood through a single lens. Hormones, lifestyle, identity and emotional regulation are not separate systems but interconnected influences that continuously shape one another. The emerging perspective is not that men are malfunctioning, but that many are operating without sufficient visibility of the processes influencing how they feel, behave and respond.

Want to learn more? Tune into our The Male Mind conversation here…