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Unlocking Peak Mental Performance Through Personalised Nutrition

Are you noticing afternoon fatigue or finding it challenging to concentrate on important tasks? Although there are many factors behind these hurdles, the secret to overcoming them may not lie solely in time management but also on your dinner plate. In this article, we delve into the captivating science that interlinks nutrition with cognitive performance and demonstrate how a customised nutritional approach can be your catalyst to peak mental performance.

The Challenge Faced by Professionals

In today's fast-paced environment, professionals often find themselves having jam-packed schedules that leave little room for mindful eating. Quick and convenient meals become the norm, and in extreme cases, meals are skipped entirely. One of my executive clients once said that she didn't drink her recommended 2 litres of water a day because she didn’t have time to visit the bathroom between meetings. These scenarios aren't just unsustainable; they're health risks, especially for those with pre-existing conditions like a family history of cardiovascular disease or metabolic disorders. Personalised nutrition enters the picture here. It goes beyond mere calorie counts; it's about aligning one’s dietary habits with their unique lifestyle, work demands, and health constraints.

The Science Behind Nutrition and Cognitive Function

As indicated by Martínez García et al., certain vitamins and minerals play a vital role in maintaining and even improving our cognitive functions (1). Vitamins such as B1, B6, B12, B9 (folic acid), and D, along with choline, iron, and iodine, exhibit neuroprotective effects and contribute to improved intellectual performance.

Moreover, antioxidants like vitamins C, E, A, as well as zinc and selenium, act as defence mechanisms against oxidative stress, a key factor associated with cognitive issues. The type and quality of dietary fats we consume also have repercussions. High saturated fat intake is linked with cognitive deterioration, while polyunsaturated fatty acids (like docosahexaenoic acid) offer beneficial effects in their prevention. The Mediterranean diet, characterised by a balanced omega-6 to omega-3 fatty acids ratio (5:1), is often touted for its cognitive benefits.

Tailored Solutions for Optimal Cognitive Function

While diets like the Mediterranean, DASH (Dietary Approaches to Stop Hypertension), Ketogenic and MIND (Mediterranean-DASH Diet Intervention for Neurodegenerative Delay) have proven benefits, a one-size-fits-all approach is seldom effective (2). A recent systematic review even found that adherence to the MIND diet was associated with improved cognitive function in adults, outperforming other plant-rich diets. There is a lot of evidence linking the ketogenic diet, switching our fuel from glucose to ketones and improved mental health. In clinical practice I’ve observed that the ketogenic diet is not for everyone. Therefore, looking at it through a personalised perspective, adjusting one's diet based on their unique physiology and balancing their glucose levels overall can be much more sustainable and achievable for these individuals.

Actionable Steps to Achieving Peak Mental Performance:

  1. Schedule a Nutrition Consultation - Before making any drastic changes, consult a qualified Nutritional Therapist to assess your current nutritional status and requirements.

  2. Hydration is key. Make a conscious effort to drink at least 2 litres of water a day. Keep a refillable water bottle at your workspace as a constant reminder. To reach the accurate amount of water, multiply your body weight in kg by 30-35 to get the millilitres.

  3. Mind Your Macros. Be aware of your macronutrient intake—proteins, fats, and carbohydrates—and ensure it aligns with your cognitive and physical demands.

  4. Prioritise Micronutrients - incorporate foods rich in vitamins B, D, and antioxidants into your daily meals. Foods like leafy greens, berries, and oily fish are excellent choices.

  5. Limit Saturated Fats - cut back on saturated fats found in fast food and processed products. Opt for healthier fat sources like avocados, nuts, and olive oil.

  6. Test and Tailor - If possible, undertake blood tests to identify any vitamin or mineral deficiencies. Tailor your diet accordingly under the guidance of your Nutritional Therapist.

  7. Stay Active - regular exercise complements a balanced diet and has been shown to improve cognitive function. Aim for at least 150 minutes of moderate exercise per week.

  8. Track and Adjust - keep a food and mood diary to monitor how different foods affect your cognitive performance. Share this data with your Nutritional Therapist for fine-tuning your diet.

  9. Commit to Lifelong Learning - stay updated on the latest research related to nutrition and cognitive performance. This will empower you to make informed decisions and adjustments to your diet over time.

Achieving peak mental performance isn't just a matter of sheer willpower or optimal time management; it's a symbiotic relationship between your lifestyle choices and the nutrients you consume. Throughout this article, we've navigated the complex but fascinating science linking nutrition and cognitive function. We've also spotlighted why personalisation is the keystone of effective nutrition, transcending the limitations of one-size-fits-all dietary approaches.

Your brain is one of your most valuable assets, especially in a demanding professional environment. In taking charge of your nutrition, you're not just investing in a set of meals or a new regimen; you're investing in a sharper, more focused, and resilient version of yourself.

Taking the first step can often be the hardest, but the journey towards peak cognitive function is a lifelong commitment that pays immense dividends. Whether it's incorporating more micronutrients into your diet, reducing saturated fats, or tailoring your nutrition based on unique physiological needs, the opportunities for improvement are boundless.

In a world teeming with deadlines, distractions, and constant digital noise, there has never been a more opportune moment to focus inward and commit to elevating your mental performance through personalised nutrition. We hope that the actionable steps provided offer you a clear pathway towards achieving this. Remember, you're not alone on this journey. Nutritional therapists and healthcare providers are valuable allies, offering evidence-based, individualised guidance to ensure you're fuelled for success in every facet of life.

So why wait? Let your next meal be the first step in unlocking your peak mental performance. Follow this link if you would like to book a free discovery call with me:


  1. Martínez García RM, Jiménez Ortega AI, López Sobaler AM, Ortega RM. Estrategias nutricionales que mejoran la función cognitiva. Nutr Hosp. 2018;35(Spec No6):16-19.

  2. Kheirouri, S. and Alizadeh, M., 2022. MIND diet and cognitive performance in older adults: a systematic review. Critical Reviews in Food Science and Nutrition, 62(29), pp.8059-8077.

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