Nearly Half of Dementia Could Be Prevented. Why Isn’t It Happening? (with Dr. Tommy Wood)

What if dementia isn’t just something that happens to us, but something shaped over time by how we live?In this episode, Andrew Karesa sits down with Dr. Tommy Wood, neuroscientist, physician, and author of The Stimulated Mind, to explore one of the most challenging ideas in brain health: that a significant portion of dementia may be preventable, and that everyday choices play a meaningful role across the lifespan.Dr. Wood’s work spans newborn brain injury, long-term cognitive health, and elite performance with Formula 1 drivers. At the center of it is a simple question: what helps the brain stay resilient, adaptable, and capable over time?Together, Andrew and Tommy explore the concept of “headroom,” the brain’s ability to build capacity so that decline has less impact when it comes. They revisit the common belief that dementia is simply part of aging and look at why focusing on a single cause, like amyloid, has limited our understanding of cognitive decline.The conversation moves into what actually matters in daily life. From physical activity and social connection to cognitive challenge and recovery, Tommy explains which behaviors are most influential and where people often focus on the wrong things.They also consider what this means for families already living with dementia. What still makes a difference after a diagnosis? What is worth prioritizing when time and energy are limited? And how can we talk about prevention in a way that supports, rather than burdens, caregivers?The episode also explores populations with very low rates of dementia and what their lifestyles reveal about the gap between what we know and how we live. Along the way, Tommy offers perspective on brain training, optimization, and the tendency to overcomplicate what is often more straightforward.In this episode:• What “45% of dementia may be preventable” actually means• The idea of “headroom” and how the brain builds resilience• Why focusing only on amyloid falls short• Which behaviors have the greatest impact on brain health• The role of social connection in protecting the brain• What people misunderstand about brain training and stimulation• The gap between knowledge and action• What still matters after a dementia diagnosis• What caregivers can let go of• How to prioritize when you cannot do everythingWhether you are thinking about your own future, supporting someone you love, or trying to make sense of conflicting advice around brain health, this conversation offers a clearer understanding of what matters and where to focus your energy.Learn more at:⁠⁠⁠⁠⁠⁠https://www.bluebellvillage.ca⁠⁠⁠⁠⁠⁠⁠https://www.drtommywood.com⁠https://www.drtommywood.com/stimulated-mindhttps://www.amazon.com/Stimulated-Mind-Future-Proof-Brain-Dementia/dp/0593797817Disclaimer: The information shared in this podcast is for general informational purposes only and is not intended as medical advice. It should not be used to diagnose, treat, or prevent any medical condition. Always consult your physician or another qualified healthcare provider regarding any questions you may have about a medical condition or treatment. The views and opinions expressed by guests are their own and do not necessarily reflect those of Andrew Karesa, blueBell Village Ltd., or any of its employees, contractors, or team members.