Free Strategy Session with Dr. Cindy
In this episode, Dr. Cindy welcomes back Carol McCarthy, certified brain health coach and functional genomics specialist at Caring for the Body, PLLC Center for Functional Medicine, to tackle one of the most emotionally charged conversations in brain health: what it means to carry the APOE4 allele, commonly called the Alzheimer's gene. With compassion and clinical clarity, they walk through what this gene actually does in the body, why having it is not a diagnosis, and why so many people who carry it never develop Alzheimer's disease at all.
Dr. Cindy and Carol explain that APOE is not, first and foremost, an Alzheimer's gene. Its primary job is transporting cholesterol and fats throughout the brain, supporting neuronal repair, clearing debris, and maintaining the brain's internal environment. The APOE4 variant simply does this job a little less efficiently, and when combined with a modern lifestyle full of chronic stress, poor sleep, ultra-processed foods, and environmental toxins, that reduced efficiency can accumulate over decades into meaningful risk. Carol shares her memorable garbage truck analogy to bring this science to life, and both she and Dr. Cindy emphasize that the very lifestyle factors driving that risk are largely within our control.
The episode closes with a rapid-fire Q&A covering the questions APOE4 carriers ask most: coffee, alcohol, creatine, fish oil, saturated fat, fasting, sauna, hormone therapy for women, strength training versus cardio, sleep apnea, and whether there is a supplement stack worth following. Dr. Cindy answers each one with her characteristic mix of nuance and practicality, always returning to the same core message: the goal is not a perfect protocol, it is a personalized, sustainable approach to building the healthiest brain possible.
You'll learn:
You are invited to join the Re-Think Aging Community to access resources for your journey
Resources Mentioned In This Episode:
Dr. Dale Bredesen and the Pacific Neuroscience Institute
Free Strategy Session with Dr. Cindy
Subscribe now for new episodes on the first and third Mondays of each month, and receive inspiration to help you live with more clarity, peace, and purpose, from the inside out.
Connect with Carol McCarthy:
Connect with Dr. Cindy:
Produced by: Social Chameleon
Medical Disclaimer: The Re-Think Aging Podcast features diverse expert perspectives. Statements made by guests represent their own views and do not necessarily reflect those of Cynthia Libert, M.D., or Caring for the Body, PLLC – Center for Functional Medicine.
Content shared on this podcast is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Listening to this podcast does not establish a doctor-patient relationship. Always consult your qualified healthcare professional regarding personal health decisions.
","author_name":"Cynthia Libert"}