How to support cognitive performance, focus and memory

Learn how sleep, nutrition and lifestyle shape focus, memory and learning. Blackmores' guide to supporting cognitive performance and brain health for Aussie adults.

Cognitive performance is the umbrella term for the mental functions that underpin daily life: attention, memory, learning and the ability to process information. These functions draw on shared brain networks, and they respond to how you sleep, eat, move and manage stress. With work demands rising and information loads growing across most industries, understanding what shapes cognitive function has become useful knowledge for working age adults.

This article looks at how the brain attends, remembers and learns, the factors that shape mental performance in modern lifestyles, and the practical, science aligned steps that may help support brain function over time.

Why focus, memory and mental clarity are impacted in modern lifestyles

The brain manages a much heavier information load now than it did a generation ago. Multitasking, frequent notifications and prolonged screen time all draw on the same limited attentional resources. The ADP Research Institute's People at Work survey of nearly 1,400 Australian workers found that 70% experience workplace stress at least once a week, with 46% reporting that mental health concerns affect their work performance.

Stress and cognitive load are linked through measurable physiological pathways. Sustained psychological stress elevates cortisol, which over time can affect brain regions involved in memory and executive function, including the hippocampus and prefrontal cortex. The brain accounts for around 2% of body weight yet uses roughly 20% of the body's energy, which makes it sensitive to fluctuations in sleep, nutrition and circulation.

Population data also points to gradual age-related changes in cognitive performance. A 2024 prospective cohort review published in JAMA Network Open followed older adults over time and found that physical activity was associated with maintenance of episodic memory and verbal fluency. Cognitive function changes gradually with age, and lifestyle factors play a meaningful role in that trajectory.

Understanding cognitive function: focus, recall, learning and processing

Cognitive function is not a single capability. It is a set of related processes, each handled by overlapping brain regions and networks.

Attention and focus

Attention is the gateway to everything else. Before information can be remembered or used, it has to be selected and held in working memory. Sustained attention allows you to follow a long meeting, selective attention lets you tune out background noise, and divided attention is what most people call multitasking, although the brain handles it through rapid task switching rather than true parallel processing.

Memory and recall

Memory works in three stages: encoding (taking information in), consolidation (stabilising it during sleep) and retrieval (bringing it back later). Episodic memory holds personal experiences, semantic memory stores facts and meanings, and procedural memory governs skills and habits. Each draws on different brain systems and ages at different rates.

Learning and information processing

Learning involves forming new neural connections and updating existing ones. Processing speed, the rate at which the brain takes in and acts on information, is among the cognitive domains most sensitive to sleep, nutrition and ageing. Faster, more accurate processing tends to feel like clarity. Slower processing tends to feel like fatigue.

Common causes of brain fog, low focus and mental fatigue

Several modifiable factors shape day to day cognitive performance. Recognising them is the first step toward habits that support brain function.

Sleep quality and quantity

A 2024 crossover study published in Sleep Health found that adults who reduced their sleep by 1.5 hours a night for six weeks showed reduced attentional performance compared with those maintaining adequate sleep. Sleep is when the brain consolidates memories and clears metabolic waste through the glymphatic system.

Nutrition gaps

The brain is metabolically demanding. Gaps in B vitamins, omega-3 fatty acids, iron and vitamin D may all influence how efficiently brain cells produce energy and communicate with each other. The Heart Foundation recommends consuming 250 to 500 mg of EPA and DHA daily, roughly equivalent to two to three serves of fish a week. Despite this, an analysis from the National Nutrition and Physical Activity Survey, published in Nutrients, found that only about 20% of the population meets the recommended intake for omega-3 long-chain polyunsaturated fatty acids.

Sedentary patterns and ageing

A 2025 systematic review published in Frontiers in Aging Neuroscience, found that greater sedentary behaviour was associated with poorer cognition and brain health outcomes in older adults, though the strength of associations varied by how sedentary time was measured. Ageing brings gradual cognitive change, and lifestyle factors influence the rate and shape of that change.

Nutritional support for brain health and cognitive performance

Diet plays a meaningful role in how the brain functions. Several nutrients have been studied closely for their contribution to cognitive performance, with the strongest evidence in adults whose dietary intake is below recommended levels.

Omega-3 fatty acids (DHA and EPA)

Around 60% of the brain by dry weight is fat, and DHA is the most abundant long chain omega-3 in brain tissue. DHA contributes to the structure of brain cell membranes, while EPA is involved in regulating inflammatory pathways.

A 2025 meta-analysis published in Scientific Reports examined 58 randomised controlled trials and reported that 2000mg/day omega-3 supplementation was associated with measurable improvements across attention, perceptual speed, language and primary memory. A 2024 dose response meta-analysis in BMC Medicine found that beneficial effects on executive function were most apparent at intakes above 500 mg per day, with effects building gradually over the first 12 months of consistent supplementation.

B vitamins (B6, B9 and B12)

B vitamins are involved in energy metabolism, neurotransmitter synthesis and the regulation of homocysteine, an amino acid linked to cognitive ageing. A 2025 systematic review published in Nutrition Reviews examined 17 randomised controlled trials covering 5,275 participants aged 60 and over. The review reported a small to moderate improvement in global cognitive function with sustained B6, B9 or B12 supplementation, although the certainty of evidence was rated very low and individual responses varied.

Bacopa monnieri (brahmi)

Bacopa monnieri is a herb with a long history in Ayurvedic medicine, and several human trials have studied its role in supporting memory recall. A meta-analysis published in the Journal of Ethnopharmacology reported that standardised bacopa extracts taken for 12 weeks were associated with improvements in choice reaction time, a measure of attention speed.

Citicoline (CDP-choline)

Citicoline is a naturally occurring compound that the body converts into phosphatidylcholine, a key component of brain cell membranes. A 2021 trial published in The Journal of Nutrition found that 500 mg of citicoline daily for 12 weeks was associated with improvements in episodic memory in healthy adults aged 50 to 85 with age associated memory impairment.

Food sources first

Whole foods remain the most accessible source of brain supportive nutrients. Oily fish such as salmon, sardines and mackerel provide DHA and EPA. Leafy greens, eggs, legumes and wholegrains supply B vitamins, while nuts, seeds and olive oil contribute healthy fats. Hydration matters too, since even mild dehydration can affect concentration and processing speed.

Supporting memory, learning and information processing over time

Sustained cognitive performance is built less by single interventions and more by the cumulative effect of daily habits. Three pillars carry most of the weight.

The first is sleep. Adults generally need seven to nine hours nightly, and the deeper stages of sleep are when memory consolidation happens. Consistent bed and wake times help align the body's circadian rhythm with cognitive demands during the day.

The second is regular physical activity. The 2024 JAMA Network Open review found physical activity associated with maintenance of episodic memory and verbal fluency in older adults. Aerobic activity such as brisk walking, cycling or swimming increases blood flow to the brain and may support the formation of new neural connections.

The third is mental engagement. Reading, learning new skills, social interaction and challenging tasks all keep neural networks active. Variety and novelty are what drive new connections, more than the specific activity chosen.

For nutritional support targeted at memory recall, Blackmores Ginkgo Brahmi combines bacopa monnieri (brahmi) and ginkgo biloba in a formula designed to support memory, learning and information processing. As with any nutrient based approach, consistent daily use over weeks rather than days is what aligns with how clinical trials have been conducted.

Cognitive health and ageing: maintaining brain function long term

Cognitive function changes gradually across the lifespan. Processing speed and working memory tend to decline first, while vocabulary and accumulated knowledge often remain stable or improve with age.

Long term cognitive health is supported by the same factors that support cardiovascular health. Blood pressure regulation, blood sugar control and avoidance of smoking all show consistent associations with cognitive maintenance in longitudinal cohort studies. The 2024 JAMA Network Open review reinforced physical activity as one of the better studied lifestyle factors in this context.

Targeted nutritional support may also play a complementary role. Blackmores Cognition Ultra is formulated with citicoline, the compound studied in the Journal of Nutrition trial referenced earlier. Higher concentration omega-3 options such as Blackmores Omega Triple provide DHA and EPA in a single daily capsule, which can suit people who do not eat fish two to three times per week.

How to build a daily routine that supports mental performance

A practical brain supportive routine does not require overhauling life. Small, sustained changes compound over weeks and months.

Morning anchors set the tone. Daylight exposure within the first hour of waking helps regulate the circadian rhythm. Hydration before caffeine reduces the morning energy dip. A protein containing breakfast supports steady blood sugar.

Throughout the day, brief movement breaks every 60 to 90 minutes help maintain attention. Working on one task at a time tends to be more cognitively efficient than rapid task switching. Short, deliberate pauses between tasks reduce the carryover of one task's residual focus into the next.

Evening wind down protects sleep quality. Reducing screen exposure in the hour before bed, keeping the bedroom cool and dark, and avoiding caffeine after midday all support deeper sleep stages.

Nutritional support fits within this routine. Taking fat soluble supplements such as fish oil with a meal containing some dietary fat improves absorption. Consistency matters more than the time of day. A daily routine, sustained over weeks and months, is what aligns with how nutrients are studied in clinical trials.

When to speak to a healthcare professional

Persistent changes in memory, attention or mental clarity that interfere with daily activities warrant a conversation with a GP or healthcare professional. Underlying causes can include sleep disorders, thyroid imbalances, nutrient deficiencies, mood changes and medication side effects, all of which may be addressable once identified.

Anyone considering a new supplement, particularly while taking prescription medication or managing a health condition, should also speak with their pharmacist or doctor first.

Key takeaways

Cognitive performance is the product of multiple, interacting systems. Attention, memory, learning and processing speed all respond to sleep, nutrition, physical activity and stress management. Several nutrients, including omega-3 fatty acids, B vitamins, bacopa monnieri and citicoline, have been studied for their role in supporting brain function, with the strongest effects observed in those whose baseline intake is suboptimal.

Long term mental performance is built through consistent daily habits rather than quick fixes. Adequate sleep, regular movement, nutrient rich food and meaningful mental engagement all contribute to how the brain ages. Supplements may offer additional support where dietary intake is limited, and they tend to work best when taken consistently over weeks to months rather than days.

Always read the label and follow the directions for use.

Disclaimer: This article provides general information only and is not intended to diagnose, treat, cure, or prevent any disease. The information presented is not a substitute for professional medical advice. If you have concerns about your health, please consult your GP or healthcare provider for a personalised assessment and recommendations. Supplements should not replace a balanced diet.