If you've been wondering how to improve your memory, you're not alone. Forgetting names, losing track of where you put something, or struggling to recall information as quickly as you once did can be frustrating.
Memory is complex, and many different factors can influence how clearly and efficiently the brain works.
But one area of research is drawing particular interest: the relationship between the way the brain accesses energy and cognitive function.
A question researchers are exploring: could understanding how the brain uses energy help us better understand changes in memory and mental sharpness?
Memory Depends on a Remarkably Active Brain
Your brain is constantly working — processing information, forming memories, recalling names and experiences, and helping you make thousands of decisions throughout the day.
All of that activity requires a continuous supply of energy.
This is one reason researchers have become increasingly interested in glucose metabolism, insulin signalling and their relationship with cognitive health.
But what happens when brain cells become less efficient at accessing and using the energy available to them?
The Brain–Energy Connection
Researchers have investigated associations between impaired insulin signalling, changes in brain glucose metabolism and cognitive decline.
This emerging area of research has helped generate discussion around what is sometimes described as brain insulin resistance.
In simple terms, scientists are interested not only in how much glucose is available, but also in how effectively brain cells can use that energy.
The key idea: maintaining memory may involve more than simply "exercising" the brain. Researchers are also investigating the metabolic processes that help brain cells function normally.
So, How Can You Improve Memory?
There is no single cause of memory changes — and there is no single approach that applies to everyone.
Sleep, physical activity, cardiovascular health, nutrition, stress, metabolic health and other factors can all play a role in supporting healthy cognitive function.
But researchers are also looking deeper into what happens inside the brain itself, particularly the relationship between energy metabolism, insulin signalling and cognitive performance.
This has opened up an interesting area of research into nutritional compounds and metabolic pathways associated with brain health.
A Different Way to Think About Memory
Instead of looking only at the symptoms of forgetfulness, researchers are investigating the biological processes that may influence how efficiently the brain functions as we age.
A special presentation explores this brain-energy connection in greater detail and examines why researchers have become interested in certain naturally occurring compounds in this area.
Could the way your brain accesses energy be an overlooked piece of the memory puzzle?
Discover the proposed connection between brain energy, insulin signalling and memory.
How Can You Support Better Memory as You Age?
Memory isn't controlled by just one part of your lifestyle. Researchers continue to investigate how sleep, physical activity, cardiovascular health, metabolic health, nutrition and mental stimulation may influence the way the brain functions over time.
That means improving and protecting memory may involve looking at the bigger picture of brain health rather than focusing on a single factor.
What researchers are learning: the brain depends on a constant supply of energy, healthy blood flow and complex metabolic processes to support learning, thinking and memory.
Why Brain Energy Has Attracted Researchers' Attention
The brain requires a continuous supply of energy to perform everyday tasks — from recalling a person's name to forming a new memory or concentrating on a conversation.
This is one reason scientists have investigated the relationship between glucose metabolism, insulin signalling and cognitive function.
Research has examined whether changes in the way the brain processes glucose may be associated with changes in cognitive health.
This area is still being studied, and scientists continue to investigate exactly how these metabolic processes relate to memory and age-related cognitive decline.
5 Factors That Can Influence Brain & Memory Health
Regular movement supports cardiovascular health and blood flow, both of which are important for maintaining overall brain health.
Sleep plays an important role in learning, concentration and the formation and consolidation of memories.
Blood glucose, insulin signalling and cardiovascular health are increasingly studied in relation to long-term cognitive health.
A balanced dietary pattern can support cardiovascular and metabolic health, which are closely connected with overall brain health.
Learning new skills, reading, solving problems and staying socially engaged can help keep the brain active throughout life.
Is Forgetfulness Always a Sign of Alzheimer's?
No. Occasional forgetfulness can happen for many reasons, including stress, poor sleep, medications, mood, illness and other health factors.
However, persistent or worsening memory problems should not simply be ignored or assumed to be a normal part of ageing.
If memory changes begin interfering with everyday activities — such as managing appointments, handling familiar tasks or remembering important information — speaking with a qualified healthcare professional is appropriate.
What About Alzheimer's Disease?
Alzheimer's disease is a complex neurodegenerative condition, and researchers continue to investigate the biological processes involved in its development and progression.
One area being studied is the relationship between metabolic health and the brain, including glucose metabolism and insulin signalling.
This doesn't mean insulin resistance is proven to be the single cause of Alzheimer's. Rather, it represents one of several areas researchers are investigating to better understand cognitive decline.
Important: there is currently no single lifestyle change, food or supplement proven to prevent or cure Alzheimer's disease. Research into brain metabolism and cognitive health is ongoing.
Simple Ways to Support Your Brain Health
Current brain-health guidance generally focuses on maintaining good overall health throughout life.
That includes staying physically active, eating a balanced diet, getting adequate sleep, maintaining social connections, keeping mentally active and managing cardiovascular and metabolic risk factors such as high blood pressure, cholesterol and diabetes.
These habits aren't a guaranteed way to prevent memory problems, but they form an important part of maintaining overall brain health as you age.
The bigger question researchers are now exploring is: what else can the way our brain produces and uses energy teach us about memory?
Remember: memory changes can have many different causes. If you or someone you know is experiencing persistent or worsening memory problems, seek advice from an appropriately qualified healthcare professional.