Can we "optimize" our brains?
People have always sought ways to become smarter—often through learning new things and education, or through easier and faster methods, such as various foods, supplements, substances, or techniques aimed at enhancing cognitive performance.
Considering the constant drive for productivity in modern culture, it’s no surprise that topics like brain optimization, neuroplasticity, and cognitive enhancement are frequently discussed in the public sphere.
What does brain optimization mean?
Contrary to the widespread myth that we only use 10% of our brain, our brain is active all the time, even when we’re resting. Brain optimization generally refers to improving cognitive functions—memory, concentration, learning ability, decision-making, and emotional regulation.
This can be achieved by building habits that support brain health and its plasticity—the ability to adapt and develop throughout life.
How can we keep our brains healthy?
We’ve all heard that it’s good to stay active, eat well, and get enough sleep to be productive and maintain good physical and mental health. But what does this really mean, and why is it important? What else should we do to keep our minds sharp?
Physical activity
Using our muscles regularly benefits the mind as well. When we engage in physical activity or exercise, the brain receives increased oxygen and nutrients, which in turn improves memory, attention, and the speed at which we process information. People who exercise regularly have a larger hippocampus—a brain area crucial for memory and learning. Additionally, aerobic exercise stimulates the production of brain-derived neurotrophic factor (BDNF), a protein that supports the growth and survival of neurons and their connections. In this way, physical exercise also helps reduce the risk of neurodegenerative diseases. Just one workout a day can lower the risk of cognitive decline by up to 30%.
Nutrition
The brain is an organ with high energy demands—about 20% of the body’s energy. That’s why a balanced diet is crucial for its functions. Research shows that people who follow a Mediterranean diet (rich in plant foods, whole grains, fish, and healthy fats like olive oil) are less likely to develop Alzheimer’s disease compared to those who don’t eat this way.
Omega-3 fatty acids (found in fish, flaxseed, and walnuts), antioxidants, and polyphenols (found in fruits and vegetables) support brain health and function. For example, regular consumption of blueberries can improve memory by up to 20% and reaction time on tasks testing cognitive flexibility and attention by 30%.
Of course, there are many other foodswhich are important for maintaining cognitive processes, making it essential to eat a varied and balanced diet.
Learning new things
Our brain develops and adapts throughout life. Activities such as learning new skills, playing a musical instrument, or studying foreign languages stimulate the formation of new connections between neurons and can even help the brain generate new neurons. In this way, the brain builds a functional reserve that provides protection against future loss of nerve cells.
Sleep
Adequate sleep plays a key role in cognitive functions—it’s like the foundation upon which everything else rests. The good news is that the total amount of sleep matters more than the specific timing. During sleep, the brain clears out toxins accumulated throughout the day, including beta-amyloid plaques, which are linked to the development of Alzheimer’s disease. Sleep also supports memory consolidation and improves learning and decision-making abilities. And we all know that when we consistently don’t get enough sleep, we’re less focused, have slower reactions, and are often irritable and emotionally reactive.
Taking care of your mental health
Stress and anxiety can harm brain function. Chronic stress raises cortisol levels, which can damage the hippocampus and lead to memory and learning problems. Relaxation practices and stress management techniques help improve concentration and emotional balance. Last but not least, social interaction and relationships with loved ones support brain activity and reduce the risk of cognitive decline.
Social network
Regular interaction with family and friends, participation in social groups, and engaging in meaningful conversations support cognitive health. People with an active social life enjoy better memory and a lower risk of dementia.
Impact of stress on your cognitive abilities
Short-term stress
Stress doesn’t necessarily harm the brain. Short-term (acute) stress can even be beneficial, as it improves focus. The body releases cortisol and adrenaline, which help us mobilize and cope with the challenge we’re facing.
Chronic stress
Unlike short-term stress, chronic stress can harm the brain. Continuous high levels of cortisol damage the hippocampus—the area responsible for memory and learning. This leads to concentration problems and slower decision-making. Additionally, long-lasting stress is associated with an increased risk of anxiety, depression, and cognitive decline.
How can we maintain our cognitive abilities as we age?
Start early
Brain care should start as early as possible because cognitive abilities depend on the habits we build throughout our lives. The better we take care of ourselves when we’re young, the better we preserve our cognitive functions in later years. So don’t wait to put into practice the tips mentioned at the beginning of this article—they all contribute to good brain health.
Control over cardiovascular factors
A healthy heart means a healthy brain. High blood pressure, diabetes, and high cholesterol damage blood vessels and reduce oxygen flow to the brain. Balanced nutrition, regular exercise, and stress management lower this risk and help maintain brain function over the long term.
Sauna and cognitive health
According to studies conducted on people aged 42 to 60, those who use a sauna 4–7 times a week have a 60% lower risk of dementia compared to those who use it only once a week. This effect is believed to result from improved circulation throughout the body.
Optimization or balance?
While it’s tempting to look for “quick fixes” to boost mental performance, long-term brain health depends on a balance of physical activity, proper nutrition, intellectual challenges, and emotional well-being. True brain optimization isn’t about finding a magic pill—it’s about building sustainable habits that support its plasticity and overall health.
All of these strategies not only protect the brain but also improve long-term quality of life. The brain doesn’t function in isolation—it’s an integral part of the body and depends on our overall physical and mental health.
What’s good for the body is also good for the mind. At Growth Space, we believe that sustainable growth and emotional well-being require a holistic approach. That’s why we created our new package of consultations with a psychologist, nutritionist, and fitness coachto help you balance your mind, body, and nutrition. Learn more here.