How stress affects your brain is something every busy professional should understand. A neurologist explains how cortisol shrinks it and how to reverse the damage.Understanding how stress affects your brain may be the most important thing a busy professional ever learns. In this video, Harvard- and Johns Hopkins-trained neurologist Dr. Majid Fotuhi explains why chronic stress physically changes the brain and, more importantly, how those changes can be reversed.He opens with the story of a 49-year-old hedge fund manager at the top of his career who started forgetting clients' names, feeling foggy in afternoon meetings, and worrying he was developing Alzheimer's disease. The real driver turned out to be something far more fixable.Dr. Fotuhi explains the mechanism: sustained stress keeps the hormone cortisol elevated, and over time that is linked to shrinkage in the frontal lobes and hippocampus, the regions responsible for decision-making, focus, memory, and emotional regulation. A sedentary lifestyle, irregular sleep, and a poor diet compound the effect.The good news is that this atrophy can be reversed through what he calls the five pillars of brain health: exercise, sleep, a Mediterranean-style diet, stress regulation, and ongoing mental challenge. He explains why each one matters and how to start by fixing your single weakest pillar over the next two weeks.Chapters:- 00:00 - Intro00:19 - Executive’s Brain Health Story01:35 - How Stress Shrinks Your Brain02:33 - 5 Pillars of Brain Health02:59 - Exercise03:24 - Sleep04:19 - Diet04:54 - Stress & Cognitive Health05:20 - Your 2-Week Action Plan06:33 - The Results06:58 - Protect Your Brain & Leadership07:54 - Final Thoughts✅ Chronic stress keeps cortisol elevated, which is linked to a shrinking brain✅ The frontal lobes and hippocampus control decisions, memory, and mood✅ Brain fog, memory lapses, and short temper are reversible warning signs✅ The 5 pillars — exercise, sleep, diet, stress control, mental challenge — rebuild the brain✅ Start by fixing your single weakest pillar over two weeks👉 Subscribe for practical, science-based brain health advice from a neurologist: https://www.youtube.com/@DrFotuhi💬 Which pillar is your weakest right now?Tell us in the comments.🧠 Take the free Invincible Brain Assessment: https://invincible.drfotuhi.com#ExecutiveHealth #BrainFog #brainhealth