Almost half of the population expresses anxiety about potential memory loss and decreased cognitive function, even though actual cases of dementia and cognitive decline are significantly less prevalent. These findings highlight our shared misconceptions about memory, encouraging us to delve into the complexities of brain health and recognize the ways in which we can enhance our mental acuity, regardless of age.
The Foundations of Memory
Memory functions on both conscious and subconscious levels. For instance, when acquiring a new skill like riding a bike or following a new recipe, you are actively engaged and aware of each step. However, with repetition, this knowledge shifts to a more automatic, subconscious level.
Dr. Judy Ho, PhD, a licensed clinical and forensic neuropsychologist, explains, “Our senses first capture information, which is then encoded into the brain through various modalities—visual, auditory, or semantic. After encoding, this information is distributed across various regions of the brain, including the hippocampus.”
“When we need to access this information, it is retrieved and brought back to conscious thought, often triggered by a cue, like a specific question, a familiar object or photo, or even a scent related to a past experience,” she adds.
Understanding Memory Development and Decline
Studies indicate that many individuals can recall moments from as early as two years old.
According to Dr. J. Carson Smith, a brain health and cognitive motor neuroscience professor, “In youth, signals within the brain’s networks are clear and distinct, allowing for effective multitasking. Age tends to blur these lines as we draw on different brain regions to manage similar tasks. This desegregation may signal the onset of potential cognitive decline.”
Although changes in cognition can begin in our thirties, they often become more pronounced in our sixties and beyond.
“While our memories are typically reliable, conditions like Alzheimer’s can disrupt them,” remarks Dr. Joseph Masdeu, MD, PhD, who leads the prominent Nantz National Alzheimer Center in Texas.
“As we age, our brains accumulate more information, which can slow retrieval. Furthermore, memory loss diseases tend to be more prevalent in later stages of life,” adds Masdeu.
Safeguarding Memory Foundations
Maintaining a healthy lifestyle is crucial for supporting brain health and enhancing memory retention.
Nutrition
“Adopting a wholesome diet, such as the Mediterranean or MIND dietary patterns, can be beneficial in the long run, but must be consistently followed for years,” Masdeu advises. These diets heavily focus on plant-based foods, including whole grains, fresh fruits and vegetables, and fish.
Rest
Dr. Masdeu also highlights the importance of adequate sleep. Sleep is essential as it aids in detoxifying the brain and allows it to process and store new information. “Getting seven to eight hours of restful sleep is beneficial,” he advises. “Even resting with your eyes closed can provide a break for your brain.”
Physical Activity
Regular physical activity is also vital. Smith notes that exercise fosters the re-establishment of brain connections as we grow older and enhances the brain’s capacity to encode information more efficiently.
“Even a single session of exercise, like a brisk ride on a stationary bike, can enhance learning capabilities and show numerous improvements across various functions,” states Smith. “Exercise contributes to faster and more accurate responses on tests, enhances executive functioning, and boosts memory recall. It also serves as a safeguard against cognitive decline associated with aging.”
Understanding the intricacies of memory may seem complex, but the core principles of good health are relevant: maintain a nutritious diet, indulge in restorative practices, and prioritize physical activity.
This article was originally published in the July 2024 issue of up7op magazine.
