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Over the years, I have guided countless leaders on how to support their nervous system to stay flexible enough to think clearly, respond wisely, and tolerate uncertainty without collapsing into reacti…

Over the years, I ha…

Over the years, I have guided countless leaders on how to support their nervous system to stay flexible enough to think clearly, respond wisely, and tolerate uncertainty without collapsing into reactivity. We focus on resilience, stress regulation, self-awareness, emotional intelligence, communication, mindset, burnout, and the ability to stay grounded and adaptive under pressure. We also address the biological terrain underneath all of it, specifically, the gut-brain axis. When I wrote my Harvard Health article, “Nutritional Psychiatry: Your Brain on Food,” more than a decade ago, the …

What happens to the body when we contribute Contributing to someone else’s wellbeing changes the physiology of the person doing the contributing. This is not a philosophical claim — it is a mea…

What happens to the …

What happens to the body when we contribute Contributing to someone else’s wellbeing changes the physiology of the person doing the contributing. This is not a philosophical claim — it is a measurable biological event. Research using daily diary data from the nationally representative MIDUS study found that on days when people engaged in volunteer work, the relationship between daily stressors and cortisol output was significantly attenuated compared to days when they did not volunteer. The stress response still occurred, but its hormonal expression was buffered. A parallel study confir…

In 2015, I wrote a piece for Harvard Health titled “Nutritional Psychiatry: Your Brain on Food”that introduced many readers to a then-emerging field: the science connecting what we eat to how our…

In 2015, I wrote a p…

In 2015, I wrote a piece for Harvard Health titled “Nutritional Psychiatry: Your Brain on Food”that introduced many readers to a then-emerging field: the science connecting what we eat to how our brains function and how we feel. A decade later, that piece continues to circulate — cited in academic papers, republished across health platforms, referenced in clinical conversations. The research has only deepened since then. Where I have been paying close attention is how that science applies to leaders, executives, and anyone carrying sustained cognitive and emotional load — because in m…

Your Nervous System’s Best Investment — Part 4 of 4 By Eva Selhub, MD Over the past few weeks, we have been exploring how the nervous system, as a living system in constant pursuit of balanc…

Your Nervous System�…

Your Nervous System’s Best Investment — Part 4 of 4 By Eva Selhub, MD Over the past few weeks, we have been exploring how the nervous system, as a living system in constant pursuit of balance, may perform, heal and sustain more effectively when its preferred strategy for achieving that balance is supported rather than overridden. That strategy, as the science increasingly confirms, is love — and more specifically, the physiology of love, the measurable biological state that the nervous system may reach through three distinct but interconnected pathways: social love, self love and s…

Your Nervous System’s Best Investment — Part 3 of 4 By Eva Selhub, MD Think back to a moment when you felt at your best — a time when everything came together with an ease that felt al…

Your Nervous System�…

Your Nervous System’s Best Investment — Part 3 of 4 By Eva Selhub, MD Think back to a moment when you felt at your best — a time when everything came together with an ease that felt almost effortless: your thinking was clear and fast, and you felt genuinely connected to the people around you and to something larger than the task at hand. Athletes call it being in the zone. Musicians call it being in the pocket. Leaders often describe it as the moment when the room shifts and everything clicks. Whatever you call it, you know the feeling. What did you feel? When most people ex…

Your Nervous System’s Best Investment — Part 2 of 4 By Eva Selhub, MD It is Sunday evening, but it feels like you are already in Monday. The week ahead is running through your mind — the m…

Your Nervous System�…

Your Nervous System’s Best Investment — Part 2 of 4 By Eva Selhub, MD It is Sunday evening, but it feels like you are already in Monday. The week ahead is running through your mind — the meetings, the decisions, the people who need things from you. Your body might be in the room, but your attention lies somewhere else entirely, scanning, preparing, and possibly bracing. For many high achievers, this has become so familiar it no longer registers as stress. It is simply part of the game…Until it no longer is. Until something starts to feel off or break. And for the most part, up…

By Eva Selhub, MD The nervous system invests in love as a biological strategy. The brain has one primary directive: maintain balance, or restore it as quickly as possible. Every physiological respo…

By Eva Selhub, MD …

By Eva Selhub, MD The nervous system invests in love as a biological strategy. The brain has one primary directive: maintain balance, or restore it as quickly as possible. Every physiological response the body generates — every hormone released, every immune cell deployed, every behavioral impulse activated — exists in service of that directive. Restored balance, or homeostasis, means safety to the brain. It means the organism is intact, the species will continue, all systems can return to their natural state of Growth and repair. The entire human system — metabolic, nervous, cardiova…

What Kindness Does to Your Brain | Micro-Habits That Rewire Leadership You are three hours into back-to-back meetings, the third escalation email of the day just arrived, and someone on your team …

What Kindness Does t…

What Kindness Does to Your Brain | Micro-Habits That Rewire Leadership You are three hours into back-to-back meetings, the third escalation email of the day just arrived, and someone on your team missed a deadline again. Your jaw tightens. Your breath shortens. The voice in your head says: Be firm. Hold the line. Show strength. And in that moment, kindness feels like a luxury you cannot afford.  Except your nervous system knows something your urgency does not. When you choose harshness over compassion—even in small, everyday moments—you activate your sympathetic stress response, na…

The Science of Connection in the Body Experiences of love, safety, and genuine connection create measurable changes in the body. These states influence the nervous system, hormone balance, cardiova…

The Science of Conne…

The Science of Connection in the Body Experiences of love, safety, and genuine connection create measurable changes in the body. These states influence the nervous system, hormone balance, cardiovascular function, and immune regulation. The set of shifts that occur when a person feels deeply connected can be described as a “love response”: a coordinated pattern of physiological changes that supports rest, repair, and healing. During this response, heart rate, blood pressure, and respiratory rate often decrease. The parasympathetic nervous system—the branch associated with “rest a…

Understanding Burnout as a Physiological State. Burnout is often misunderstood as a personal failure or a lack of resolve. This misunderstanding creates unnecessary shame and disconnects us from wh…

Understanding Burnou…

Understanding Burnout as a Physiological State. Burnout is often misunderstood as a personal failure or a lack of resolve. This misunderstanding creates unnecessary shame and disconnects us from what is truly happening in the body. Burnout is not a character deficit. It is a physiological state that develops when the nervous system has been operating in mobilization for extended periods without sufficient recovery. When you begin to understand burnout as a state of chronic activation, you shift from self-criticism to curiosity. The body is offering accurate information about its limits, …

The world’s top athletes have coaches. The most successful CEOs have coaches. Nobel Prize winners often credit their mentors and guides. Yet there persists a curious misconception in our achievement…

The world’s top at…

The world’s top athletes have coaches. The most successful CEOs have coaches. Nobel Prize winners often credit their mentors and guides. Yet there persists a curious misconception in our achievement-oriented culture: that needing a coach somehow signals weakness or inadequacy. This couldn’t be further from the truth. As both a physician and executive coach with nearly three decades of experience working with high performers, I’ve witnessed an extraordinary paradox, the higher someone performs, the more they actually need Coaching to sustain and elevate their success. The research …