Improve Your Brain Health to Prevent Cognitive Decline

As the world emerges from what was for many a prolonged period of inactivity and stress, it’s not just our bodies that have become soft - our brains are inevitably affected too. Just as Dr. James Levine coined the term “sitting is the new smoking” to describe the increase in heart disease and diabetes that accompanies too much inactivity, 2018 research from the University of California has found that sedentary behavior is also linked to thinning in regions of the brain that are critical to memory formation.

Our Brain is Arguably our Most Valuable Organ

A healthy brain is crucial when it comes to our overall health, wellbeing and lifestyle. It is the command center for the nervous system and underlies our ability to communicate, remember, solve problems, make decisions and live a long and full life. A healthy brain helps us with cognition and emotional regulation in the present, in addition to assisting in staving off functional decline as we age.

However, Brain Health is in Decline

An estimated 6.2 million Americans age 65 and older are living with Alzheimer's dementia in 2021. By 2050, the Alzheimer’s Association estimates that number may grow to 12.7 million unless something changes drastically. And while research is still evolving, evidence is strong that people can reduce their risk of cognitive decline by making key lifestyle changes.

We know that exercise helps to improve our physical health, so what does it take to keep our brain healthy, give it a strengthening workout and boost our cognitive skills?

4 Tips for a Healthier Brain

1 - Reduce your Stress

While momentary stress doesn’t present a problem to brain health, continued stress that is endured for long periods of time does. Long-term stress interferes with cognition, memory, attention and contributes to conditions such as anxiety and depression. This is caused by the overstimulation of the amygdala, which regulates our fight or flight response - a normal response to stressful events that is designed to be temporary.

Research has shown us that long term, chronic stress has a shrinking effect on the prefrontal cortex, the area of the brain responsible for memory and learning. It has also established a connection between long-term stress and cognitive decline as we age, including contributing to the likelihood of developing Alzhiemer’s disease and dementia - that is on top of the known ill effects of chronic stress on sleep patterns, inflammation and heart health.

Adapt With Stress-Reduction Strategies

Needless to say, while we can’t always control what happens to us, learning stress reduction strategies will help us live happier and better lives, while contributing to our brain health and cognitive function into old age. Here are some key practices:

Mindfulness

Meditation

Qigong

Tai Chi

Yoga

Guided Imagery

Progressive Muscle Relaxation

Journaling

Acupressure

Regular physical activity

Connecting with supportive people

Speaking with a therapist / finding professional help

Doing something you love

Spending time in nature

2 - Eat the Right Foods

Ninety percent of the body’s serotonin is made by the bacteria in the gut. Serotonin is the main hormone that ensures our moods are balanced and we experience feelings of well-being, calmness and happiness. Having low levels of serotonin contributes to developing chronic conditions such as anxiety and depression, which can have long-term effects on our brain health. Thus, it’s imperative to keep our serotonin production optimal. This can be achieved by maintaining our microbiome, aka improving our gut health and digestion.

Best Practices for a Healthier Microbiome:

Avoiding packaged and processed foods

Avoiding foods high in refined sugar

Avoiding foods fried in vegetable and canola oil and using a healthier alternative such as olive oil

Avoid alcohol

Drinking plenty of water

Eating a diet rich in an assortment of different colored fruits and vegetables.

Reducing red meat intake

Eating enough fibre, including whole grains and legumes

Increasing consumption of fermented foods such as kefir, kimchi, sauerkraut, Kombucha, and yogurt

Supplements that Support the Brain

While the diet should be able to support optimal brain health, the truth is that many of us do not consume enough of some nutrients, or are not able to absorb as much as we should from our food. The following supplements have been researched for their supportive effects on the brain. Always talk to your healthcare practitioner before taking any nutritional supplement.

Anti-inflammatory herbs such as turmeric (aka curcumin) help to reduce inflammation in the brain

Amino acids such as GABA, which helps calm the brain, reduce mental stress and facilitate good sleep patterns

A good quality probiotic can help support the gut as it manufactures serotonin

Oils high in omega-3 fatty acids such as fish oil, flaxseed oil or hemp oil help provide the building blocks for healthy brain cells

B vitamins and folic acid help in the production of neurotransmitters

Vitamin D is particularly important during the dark winter months. One study found that people with low levels of Vitamin D have twice the risk of developing Alzheimer’s

3 - Sleep Well and Get Plenty of it

Good sleep hygiene is crucial to maintaining good brain health. On average, you need a minimum of seven hours of uninterrupted, quality sleep per night on a regular basis. If you fail to meet these requirements, over time your brain’s ability to think clearly, regulate your emotions, manage stress and balance your hormonal function can be impaired.

Fostering Healthy Sleep Habits

Here are our recommendations for healthy practices that promote great sleep - so that you wake up feeling refreshed every morning:

Creating a relaxing bedtime ritual and committing to it (i.e. meditation or a hot shower)

Going to bed at the same time every night

Keeping your bedroom dark, quiet, cool and comfortable

Limiting screen time before bed / no screen time for at least an hour before your bedtime ritual

Waking up at the same time every day, including on weekends

Avoiding caffeine after 12:00 pm

Avoiding naps

Avoiding late-night meals

4 - Stay Mentally Active

Treat your brain like any other muscle, use it to not lose it. Often life becomes habitual and this affects our cognition. It’s important to regularly challenge your brain and keep it stimulated daily to help prevent cognitive decline and reduce the risk of dementia later in life.

Brain-Stimulating Habits

Here are some activities to consider integrating into your daily practice. Ideally choose more than one and switch up your practice often:

Play strategy games

Do crossword puzzles, word games or Sudoku

Learn a new skill such as a musical instrument or craft

Learn a new language

Read a book

Socialize and have stimulating conversations or friendly debates with a social group

References

Bernstein, Rebecca. The Mind and Mental Health: How Stress Affects the Brain. Touro University Worldwide. 2016

Bremner JD. Traumatic stress: effects on the brain. Dialogues Clin Neurosci. 2006;8(4):445-461. doi:10.31887/DCNS.2006.8.4/jbremner

Cirelli C, Tononi G. The Sleeping Brain. Cerebrum. 2017;2017:cer-07-17. Published 2017 May 1.

Clapp M, Aurora N, Herrera L, Bhatia M, Wilen E, Wakefield S. Gut microbiota's effect on mental health: The gut-brain axis. Clin Pract. 2017;7(4):987. Published 2017 Sep 15. doi:10.4081/cp.2017.987

Evrensel A, Ceylan ME. The Gut-Brain Axis: The Missing Link in Depression. Clin Psychopharmacol Neurosci. 2015;13(3):239-244. doi:10.9758/cpn.2015.13.3.239

Scott, S.B., Graham-Engeland, J.E., Engeland, C.G. et al. The Effects of Stress on Cognitive Aging, Physiology and Emotion (ESCAPE) Project. BMC Psychiatry 15, 146 (2015). https://doi.org/10.1186/s12888-015-0497-7

Understanding the stress response. Harvard Health Publishing. 2020 https://www.health.harvard.edu/staying-healthy/understanding-the-stress-response

Worley SL. The Extraordinary Importance of Sleep: The Detrimental Effects of Inadequate Sleep on Health and Public Safety Drive an Explosion of Sleep Research. P T. 2018;43(12):758-763.