Cognitive Decline Expert: The Disease That Starts in Your 30s but Kills You in Your 70s
Louisa, a clinician and academic, discusses Alzheimer's disease prevention, emphasizing lifestyle factors, exercise, and specific supplements like creatine and omega-3s. She highlights the disproportionate impact on women and actionable steps to build cognitive reserve and maintain brain health.
Deep Dive Analysis
14 Topic Outline
Creatine's Brain Benefits and Dosage Recommendations
Alzheimer's Disease: Preventability, Risk Factors, and Women
Building Cognitive Reserve Through Lifestyle and Exercise
Impact of Short-Form Content and Sedentary Lifestyles on Brain
Resistance Training for Brain Health and Cancer Prevention
Cardiovascular Health, VO2 Max, and Heart Remodeling
Understanding and Protecting the Blood-Brain Barrier
Ketogenic Diet and Hormone Replacement Therapy for Women
Sleep Deprivation's Impact and Optimization Strategies
Key Supplements for Brain Health and Longevity
The 'Willpower Muscle' and Doing Hard Things
AI's Impact on Cognition and Brain Function
Louisa Nicola's Mission and Personal Motivation
The Role of Faith in Science and Life
6 Key Concepts
Cognitive Reserve
This refers to the brain's capacity to withstand stress, damage, and pathology. It is built through activities like exercise, reading, handwriting, and engaging in novel experiences, allowing individuals to maintain cognitive function even with significant brain changes.
Myokines
These are signaling molecules released from muscles during physical activity, especially heavy resistance training. They travel to the brain, crossing the blood-brain barrier, where they promote the growth of new neurons, reduce inflammation, and can even downregulate tumor cell growth.
Left Ventricular Hypertrophy
This is a condition where the left ventricle of the heart thickens, making it less efficient at pumping oxygenated blood to the body, including the brain. It is an age-related effect that can be reversed through specific high-intensity exercise protocols.
Leaky Brain
Similar to 'leaky gut,' this describes the degradation of the blood-brain barrier, where tight junctions between cells spread apart. This allows harmful molecules to passively diffuse into the brain, which is detrimental to brain health and seen in conditions like mild cognitive impairment.
Glymphatic System
This is the brain's waste clearance system, primarily active during deep sleep. It involves glial cells shrinking to allow cerebrospinal fluid to wash out metabolic waste products, such as amyloid beta, which is a hallmark protein of Alzheimer's disease.
Anterior Mid-Singulate Cortex (AMCC)
Often referred to as the 'willpower muscle,' this brain region grows when individuals engage in challenging tasks and push through discomfort. Its size and activity level are strong predictors of an individual's resilience and ability to overcome major life setbacks.
8 Questions Answered
Being a woman is a direct risk factor for Alzheimer's, not just living longer. This is largely due to the menopausal shift, which causes a 30% reduction in brain glucose metabolism as estrogen levels decline.
Resistance training (strength training) is considered the most compelling, especially when lifting at around 80% of your one-repetition maximum. It increases brain size, enhances processing speed and fluid intelligence, and helps grow new neurons in the hippocampus.
Sitting for more than 10 hours a day increases the risk of cardiovascular disease, even if weekly exercise goals are met. This is because prolonged sitting shuts down lipoprotein lipase, an enzyme crucial for burning fat and clearing glucose from the blood.
Deep sleep activates the glymphatic system, which acts like a washing machine for the brain, clearing out amyloid beta, a protein associated with Alzheimer's pathology. Just one night of sleep deprivation can raise amyloid beta risk by 4%.
Yes, women in perimenopause facing a 30% reduction in brain glucose metabolism may benefit from a ketogenic diet. Ketones provide an alternative, often more effectively utilized, fuel source for the brain during this metabolic crisis.
The 'willpower muscle' is the Anterior Mid-Singulate Cortex (AMCC), which gets larger when individuals engage in hard, challenging tasks. Conversely, it atrophies in those who live sedentary lives or avoid challenges, indicating its role in resilience and the will to live.
The APOE4 gene is a strong genetic risk factor for Alzheimer's, but it's not a foregone conclusion. A female with one copy of the APOE4 gene has double the risk of her male counterpart, raising her risk by about sixfold, while two copies increase it by 15-fold.
Instead of relying solely on creatinine levels, which can be high in active individuals or those with more muscle mass, ask your doctor to test for cystatin C. This is a more accurate marker of kidney function.
19 Actionable Insights
1. Supplement with Creatine Daily
Take 15-30 grams of NSF-certified CreaPure creatine daily, split into multiple doses, to protect your brain from stress, concussion, and stroke, enhance cognitive function, and potentially reduce cancer risk. This is especially beneficial if sleep-deprived or over 50, and you can monitor kidney function with a cystatin C test.
2. Prioritize Heavy Resistance Training
Engage in heavy resistance training (around 80% of your one-rep max) 2-3 times per week to build cognitive reserve, increase brain size, and promote new neuron growth in the hippocampus. Lifting heavy releases beneficial myokines and BDNF, significantly improving cognitive performance and protecting against Alzheimer’s.
3. Strengthen Your Legs for Brain Health
Make exercises that build leg strength, such as deadlifts or barbell squats, a priority. Strong legs are identified as the most important tool for Alzheimer’s prevention, contributing to a bigger brain and preserved cognitive function.
4. Implement High-Intensity Aerobic Training
Incorporate high-intensity (Zone 5) aerobic training, such as the Norwegian 4x4 protocol (4 minutes at 90-95% max heart rate, 4 minutes rest, repeated 4 times) once or twice a week. This protocol improves VO2 max, remodels the heart, and offers significant brain health benefits, particularly for women and those in midlife.
5. Prioritize Consistent Deep Sleep
Aim for 7.5 hours of consistent, deep sleep nightly to activate the glymphatic system, which effectively washes out amyloid beta from the brain. Avoid chronic sleep deprivation, as even one night increases amyloid beta risk by 4-5%, and consider banking sleep in advance to mitigate anticipated deprivation.
6. Optimize Sleep Environment & Routine
Improve sleep quality by taking GABA or Ashwagandha for a racing mind, backloading carbs with starchy vegetables, and establishing an 8 PM ‘warm-down’ routine free from emails, hard conversations, or intense media. Optimize your sleep environment by lowering core body temperature (feet outside covers, AC, glycine) and using red light bulbs to promote melatonin release.
7. Combat Sedentary Lifestyle
Counteract the negative effects of prolonged sitting (over 10 hours daily) by performing 10 air squats every hour for eight hours. This simple routine can significantly compensate for a sedentary lifestyle and help regulate blood glucose levels.
8. Embrace Hard Things to Grow Willpower
Actively seek out and engage in challenging activities, especially those you dislike, to grow your anterior mid-singulate cortex (AMCC) – often called the ‘willpower muscle.’ This practice builds mental resilience and cognitive reserve, preparing your brain to overcome future adversities.
9. Supplement with Quality Omega-3s
Supplement with high-quality, NSF-certified omega-3 fatty acids, storing them in the fridge to prevent oxidation. Omega-3s are vital for brain cell membrane fluidity, possess potent anti-inflammatory effects, and are particularly beneficial for individuals with mild cognitive impairment or the APOE4 gene.
10. Monitor Blood Pressure Daily
Measure your blood pressure every morning using an automatic monitor to maintain good brain health and prevent capillary damage. Aggressively manage hypertension (systolic over 135) through exercise, stress management, and potentially medication to preserve brain gray matter and cognitive function.
11. Maintain High Vitamin D Levels
Ensure your vitamin D levels are high (around 60 nanograms per deciliter) to significantly lower your risk of Alzheimer’s disease and dementia. Vitamin D receptors are abundantly found in brain areas crucial for memory.
12. Ketogenic Diet for Perimenopausal Women
Women in perimenopause should consider adopting a ketogenic diet to provide an alternative fuel source (ketones) for the brain. Estrogen decline during this phase leads to a 30% reduction in brain glucose metabolism, causing an energetic crisis.
13. Discuss Hormone Replacement Therapy
Consult your physician about Hormone Replacement Therapy (HRT), especially if you are in perimenopause or menopause. HRT can reduce Alzheimer’s risk by up to 30% by alleviating hot flashes and night sweats (improving sleep), and supporting muscle protein synthesis and bone density.
14. Perform Brain-Activating Drills
Dedicate five minutes daily to brain-activating drills, such as throwing a tennis ball against a wall while alternating hands and wearing an eye patch, or doing so while standing on one leg. These exercises improve executive functions, processing speed, reaction time, and hand-eye coordination, building cognitive reserve.
15. Engage in Novelty and Learning
Actively build cognitive reserve by seeking novelty, learning new things, and engaging in activities like handwriting and reading. This practice creates new neural connections, making the brain richer and more stable against age-related decline.
16. Test for Alzheimer’s Blood Markers
Inquire with your doctor about blood tests for Alzheimer’s hallmarks like p-tau-217 and amyloid beta. These tests can now predict mild cognitive impairment and Alzheimer’s with high accuracy, offering an opportunity for early detection.
17. Get APOE4 Gene Tested
Consider getting tested for the APOE4 gene with a simple blood test through your doctor. While it’s a strong risk factor for Alzheimer’s disease, a positive result is not a foregone conclusion for developing the disease.
18. Test Lipoprotein Little A (Lp(a))
Ask your doctor to test your Lipoprotein little a (Lp(a)) levels. Elevated levels indicate a hereditary increased risk for heart-related events and cardiovascular disease.
19. Test Biological Age Annually
Consider testing your biological age annually. This practice, performed by the expert, can provide insights into your overall health and aging process.
8 Key Quotes
I don't care who you are, you should definitely be having this.
Louisa Nicola
Dementia and Alzheimer's disease are not part of the natural brain aging process.
Louisa Nicola
Being sedentary is a disease.
Louisa Nicola
Dementia is the number one killer of women in the UK. The number one. It's the number one cause of death in Australia for both men and women.
Louisa Nicola
I don't know who I am anymore.
Augusta DT (quoted by Louisa Nicola)
Growth only occurs during resistance.
Steven Bartlett
I'm not hopeful for anybody saving us or coming in and giving us an easy way forward.
Louisa Nicola
It's just the most heartbreaking thing to lose someone while they're still alive.
Steven Bartlett
4 Protocols
Compensating for Sedentary Lifestyle
Louisa Nicola- Perform 10 air squats every hour on the hour for 8 hours a day.
Norwegian 4x4 for VO2 Max Improvement
Louisa Nicola- Elevate your heart rate to 90-95% of your maximum heart rate for 4 minutes.
- Rest completely for 4 minutes.
- Repeat this cycle 4 times.
- Perform this protocol once a week to maintain or improve VO2 max.
Optimizing Sleep for Brain Health
Louisa Nicola- Start preparing for sleep around 8 PM by getting off screens and avoiding hard conversations or stimulating content.
- Dim lights and consider replacing bedroom light bulbs with red light bulbs to reduce blue light exposure.
- Supplement with GABA (gamma amino bruteric acid) if you have trouble falling asleep due to a racing mind.
- Consider backloading carbohydrates (e.g., starchy vegetables like sweet potatoes) in your evening meal.
- Ensure your core body temperature drops at least two degrees for optimal sleep; use a temperature-controlled mattress, sleep with feet outside sheets, or cool the room with AC.
- Supplement with Glycine to help lower core body temperature and potentially improve longevity.
Brain Performance and Cognitive Reserve Drill
Louisa Nicola- Stand a few feet from a wall with a tennis ball.
- Throw the ball overhand with your right arm and catch it with your right arm, repeating for a minute.
- Next, throw with your right arm and catch with your left arm, alternating hands, for a minute.
- Repeat the alternating throw and catch with an eye patch covering one eye.
- For an advanced challenge, repeat the alternating throw and catch with an eye patch while standing on one leg.