Most Replayed Moment: Alzheimer's Starts 20 Years Before Symptoms! How To Protect Your Brain Now
Louisa Nicola, a neurophysiologist and founder of Neuro Athletics, discusses how specific exercise types, particularly resistance training and high-intensity aerobic activity, can protect the brain from cognitive decline and even reverse age-related heart damage. She highlights the importance of leg strength and managing blood pressure for brain health.
Deep Dive Analysis
12 Topic Outline
Resistance Training and Brain Health
APOE4 Gene and Alzheimer's Risk
Importance of Leg Strength for Brain
Myokines and Brain Growth from Heavy Lifting
Exercise's Anti-Cancer Effects
Dangers of Sedentary Lifestyle
Aerobic Training Zones and Gender Differences
Outdoor vs. Indoor Exercise for Brain
Heart Remodeling through Exercise
Blood Pressure and Brain Capillary Health
Alzheimer's Disease Progression and Management
Dietary Interventions for Brain Health
13 Key Concepts
Gray Matter
Gray matter consists of the cell bodies of neurons located on the outer portions of the brain. It is crucial for processing information, and its slowing or loss is associated with cognitive decline.
White Matter
White matter is found deep within the brain and contains myelinated neurons responsible for transmitting signals efficiently. Over time, lesions can develop in the white matter.
APOE4 Gene
This gene is a strong genetic risk factor for Alzheimer's disease. Carrying one copy raises the risk by 2-3 times, while two copies increase it by 10 times, with females facing a higher risk than males.
Myokines
These are chemicals released from muscles during contraction, which travel to the brain. They perform beneficial actions such as improving cognitive performance, aiding in the growth of new neurons in the hippocampus, and acting as anti-inflammatory agents.
BDNF (Brain-Derived Neurotrophic Factor)
BDNF is a crucial growth factor for the brain, released abundantly during both aerobic and resistance training. It plays a vital role in helping to grow new neurons in the hippocampus, a brain region important for memory.
Irisin
A specific myokine that functions as a messenger molecule, helping BDNF to express itself in the brain. This expression then promotes the growth of new neurons, particularly in the hippocampus.
Interleukin-6 (IL-6)
While often associated with inflammation, when released during exercise, this myokine acts as an anti-inflammatory cytokine in the brain. It is also responsible for downregulating tumor cell growth, contributing to exercise's anti-cancer effects.
Active Sedentary
This term describes individuals who meet their weekly exercise goals but still sit for more than 10 hours a day. Despite exercising, they face an increased risk of cardiovascular disease because prolonged sitting deactivates lipoprotein lipase, an enzyme essential for burning fat and clearing glucose.
Zone 2 Exercise
This is a moderate-intensity exercise zone, typically around 60% of maximum heart rate, where one can jog and converse but is still huffing and puffing. Energy production in this zone primarily occurs within the mitochondria.
Zone 3, 4, 5 Exercise
These are higher-intensity exercise zones where energy is produced outside the mitochondria in the cytoplasm. This process involves rapidly breaking down glucose via glycolysis, which produces lactate, a fuel source for the brain and a myokine.
Left Ventricular Hypertrophy
A condition where the left ventricle of the heart, responsible for pumping oxygenated blood to the entire body, thickens. This thickening makes the ventricle less strong and less efficient at pumping blood, which can impact blood supply to the brain.
Blood-Brain Barrier
A protective barrier in the brain composed of cells bound by tight junctions, acting as a 'bouncer' to regulate which molecules can enter. Its integrity is crucial for brain health and can be compromised by factors like high blood pressure.
Metabolic Crisis (Alzheimer's)
A state in the brain during Alzheimer's disease where brain cells lose their ability to effectively use glucose as their primary fuel source. This energy deficiency leads to the brain seeking alternative fuel, such as ketone bodies.
11 Questions Answered
Resistance training, particularly lifting heavy (around 80% of one-repetition max) 2-3 times per week, is highly effective for enhancing cognitive functions, improving processing speed, and slowing gray matter decline.
The APOE4 gene is a strong risk factor; one copy raises the risk by 2-3 times, and two copies by 10 times. Females with APOE4 face a doubled risk compared to male counterparts with the same genetic profile.
Studies on identical twins show that greater leg strength and power correlate with a bigger brain, larger gray matter volume, and preserved cognitive functions, making strong legs a crucial tool for Alzheimer's prevention.
Heavy lifting releases myokines that travel to the brain, improving cognitive performance, aiding neuron growth in the hippocampus (a memory center), and acting as anti-inflammatory agents.
Yes, just 30 minutes a day of aerobic physical activity can downregulate 13 types of cancers, including breast, colon, and prostate cancer, by releasing natural killer cells and providing anti-inflammatory effects.
Yes, sitting for more than 10 hours a day increases cardiovascular disease risk, even if you meet weekly exercise goals, because it shuts down lipoprotein lipase, an enzyme crucial for fat and glucose metabolism.
Zone 2 exercise is moderate intensity (around 60% max heart rate) where energy is produced in mitochondria. While generally good, women may get a greater return on investment from higher intensity (Zone 3-5) training first.
Yes, a structured exercise regimen of about four hours per week over two years in midlife (e.g., ages 47-55) can remodel the heart, reversing age-related effects by 20 years, but this plasticity is lost after age 65.
Elevated blood pressure can kill off tiny capillaries in the brain, including those supporting the blood-brain barrier, leading to a 'leaky brain' and cognitive impairment.
Alzheimer's is an end-stage disease with no cure or reversal. Patients typically die from complications like asphyxiation, loss of swallowing signals, or falls, rather than the disease itself.
A ketogenic diet can provide alternative fuel (ketone bodies) for the brain during metabolic crisis, and a high intake of omega-3 fatty acids is also recommended to support brain health.
15 Actionable Insights
1. Prioritize Heavy Resistance Training
Lift at around 80% of your one-repetition max 2-3 times per week to release beneficial myokines, grow new neurons in the hippocampus, and enhance processing speed and fluid intelligence.
2. Develop Strong Leg Muscles
Focus on building leg strength, as it is identified as the most important tool for Alzheimer’s prevention, correlating with larger gray matter volume and preserved cognitive functions.
3. Avoid Prolonged Sedentary Behavior
Limit sitting to less than 10 hours daily, as prolonged sitting increases cardiovascular disease risk, even if you meet weekly exercise goals, by shutting down fat-burning enzymes.
4. Counter Sedentary Lifestyle with Squats
Perform 10 air squats every hour on the hour for 8 hours to compensate for a sedentary lifestyle and help regulate glucose spikes after meals.
5. Monitor Blood Pressure Daily
Use an automatic blood pressure monitor every morning to track your readings, aiming for 120/80 mmHg to protect brain capillaries and prevent cognitive decline.
6. Aggressively Manage High Blood Pressure
If blood pressure is consistently above 130/85 mmHg, aggressively manage it through exercise, stress reduction, and potentially medication to preserve brain gray matter and cognitive functions.
7. Prioritize High-Intensity Aerobic Training (Women)
Women should prioritize Zone 3, 4, or 5 high-intensity aerobic exercise, followed by 2-3 resistance training sessions weekly, before incorporating Zone 2 training, as they get a greater return on investment from higher intensity.
8. Exercise Outdoors for Brain Benefits
Choose to exercise outside when possible to stimulate the brain with varied sights and sounds, which aids in motivation, dopamine release, and inflammation reduction.
9. Act in Midlife for Heart Remodeling
Engage in a structured exercise regimen of about four hours per week in your mid-40s to mid-50s to remodel the heart and reverse age-related defects by up to 20 years, as heart plasticity declines after 65.
10. Incorporate Daily Aerobic Activity
Engage in at least 30 minutes of aerobic physical activity daily to downregulate 13 types of cancers, including breast, colon, and prostate cancer, through natural killer cell release and anti-inflammatory effects.
11. Perform Deadlifts for Brain Protection
If limited to one exercise, choose the deadlift, as it engages almost every muscle in the body, maximizing neural drive and providing comprehensive brain benefits.
12. Consider Ketogenic Diet for Brain Health
In states of metabolic crisis or as a preventative measure for Alzheimer’s, consider a ketogenic diet to provide ketone bodies as an alternative fuel source for the brain.
13. Increase Omega-3 Fatty Acid Intake
Maintain a high intake of omega-3 fatty acids to support overall brain health, especially if concerned about cognitive decline.
14. Engage in Cognitive and Social Activities
Actively participate in conversations, socialize, and perform cognitive tasks like throwing tennis balls against a wall to preserve cognitive function.
15. Understand APOE4 Gene Risk
Get tested for the APOE4 gene to understand your genetic risk for Alzheimer’s, but remember it’s not a foregone conclusion, and lifestyle interventions can mitigate risk.
8 Key Quotes
resistance training being strength training one of the most compelling studies was probably the um the smart trial where they took a group of people with mild cognitive impairment and gave them two to three times per week of resistance training and they not only preserved their cognitive functions they enhanced their processing speed they enhanced their fluid intelligence and they had slowing of the gray matter.
Louisa Nicola
having strong legs is by far the most important tool in your toolbox for the prevention of alzheimer's disease.
Louisa Nicola
when it comes to the brain specifically you want to be lifting heavy for several reasons the first one is when we lift heavy when we literally like when we contract our muscle like this we are releasing a whole set of chemicals they're called myokines and when they're released from the muscle they go up to the brain and they do beneficial things for our cognitive performance our cognition and they help with the growth and proliferation of new neurons in the hippocampus.
Louisa Nicola
if you sit for more than 10 hours a day your risk of cardiovascular disease increases even if you meet weekly exercise goals because prolonged sitting shuts down lipoprotein lipase an enzyme essential for burning fat and cleaning glucose from the blood.
Louisa Nicola
you can change the trajectory of your life by doing 10 air squats every hour on the hour and there was a study that was done on this that showed that if you do 10 air squats every hour this can compensate for your sedentary lifestyle.
Louisa Nicola
midlife is the window of opportunity for brain health and for longevity.
Louisa Nicola
when we have elevated blood pressure we are starting to kill off those tiny little capillaries of the brain... so we want to maintain the integrity of the blood brain barrier by maintaining the capillary health.
Louisa Nicola
we don't die of alzheimer's disease specifically over time what happens is in these patients you have to remember alzheimer's disease is like end stage cancer once you get the diagnosis there is no cure there is no going back there is no reversal.
Louisa Nicola
2 Protocols
Norwegian 4x4 (VO2 Max Increase)
Louisa Nicola- Elevate heart rate to 90-95% of maximum.
- Maintain this high heart rate for 4 minutes.
- Rest completely for 4 minutes.
- Repeat the 4-minute on, 4-minute off cycle four times.
Dr. Ben Levine's Heart Remodeling Protocol
Dr. Ben Levine (described by Louisa Nicola)- One high-intensity workout per week (e.g., Norwegian 4x4, 90% max heart rate).
- One long aerobic exercise session per week (e.g., hiking, tennis, cycling) for 60 minutes.
- One moderate intensity workout per week for 30 minutes (perform the talk test: break a sweat but still be able to speak).
- One resistance training session per week.