The plant-powered brain: Health experts share a comprehensive guide

For decades the conversation around brain health has been dominated by a single image a piece of salmon or a bottle of fish oil For vegetarians vegans or those participating in Veganuary this has often felt like an exclusion from essential cognitive nutritionHowever as we enter a new era of nutritional science the focus is shifting Experts argue that the brain can thrive on plantbased sourcesmdashif you know the kitchen chemistry required to unlock themThis Veganuary we look at strategically using walnuts chia seeds and flaxseeds to help you feed your brain effectively while adhering to a plantbased lifestyleThe cognitive engine Why your brain craves omega3sThe human brain is nearly 60 per cent fat making the quality of your dietary fat intake a direct reflection of your cognitive performance As Dr Preeti Mohanty dietician at Apollo Clinic explains ldquoFor years omega3s have been closely associated with fish leaving many vegetarians wondering where that leaves them The good news is that plantbased foods like walnuts chia seeds and flaxseeds do offer Omega3s They are not just a single nutrient but a family of fats that serve as the building blocks for brain cellsrdquoBelow she details reasons why omega 3 is important for brain healthMood and motivationIn terms of mood regulation Omega3s have a positive effect on the neurotransmitters that affect the mood and motivation such as serotonin and dopamine Adequate Omega3 intake appears to be associated with less anxiety a better mood and less mental fatigue These improvements lead to better concentration more effective stress management and clearer thinking during mentally challenging situations including exam periods and busy workdaysThe antiinflammatory shieldIn addition to providing a number of important functions Omega3s provide an additional benefit through their antiinflammatory effects Chronic lowgrade inflammation in the brain has been linked to cognitive decline and mood problems By decreasing inflammation and oxidative stress in the brain Omega3 fatty acids support longterm brain health and may help to slow the decline of cognitive function due to ageThe conversion challenge Understanding ALA EPA and DHAWalnuts chia seeds and flaxseeds contain high amounts of ALA Alpha Linolenic Acid which is an Omega 3 fatty acid that comes from plants ldquoHowever when it comes to brain function Omega 3 fatty acids exist mainly in the form of EPA Eicosapentaenoic Acid and DHA Docosahexaenoic Acid ALA can be converted to both EPA and DHA by our bodies however this conversion process is not the most effectiverdquo explains Dr MohantyThe primary hurdle for vegetarians is that plant sources contain ALA AlphaLinolenic Acid whereas the brain primarily uses EPA and DHA Mohanty notes that the body must convert ALA into these active forms but the process is inefficient On average1 ALA to EPA 5 per cent to 10 per cent conversion2 ALA to DHA Less than 1 per cent to 5 per cent conversionFactors influencing conversionNot everyone converts these fats at the same rate Factors includebull Gender Women of childbearing age often convert ALA more efficiently due to the influence of estrogenbull Age and genetics As we age our enzymatic efficiency may decreasebull Dietary habits What you eat alongside your seeds determines how much of that lsquobrain fuelrsquo actually makes it to its destinationUnlocking the nutrients Preparation is everythingldquoYou cannot simply eat a handful of seeds and expect results The physical structure of these foods determines their bioavailabilityrdquo explains Dr Mohanty She outlines the best way to consume essential seedsThe flaxseed ruleThe grinding of flaxseeds drastically increases the number of nutrients absorbed by the body Because of the hardness of the outer shell of a flaxseed it typically does not break down until after passing time through the entire digestive tract Therefore the body is not capable of absorbing all of the Omega3 from a whole flaxseed To access the ALA and lignans inside you must use freshly ground flaxseed It is important to remember that ground flaxseed is highly sensitive to light and heat For maximum storage efficacy ground flaxseeds should be stored in an airtight container in the refrigerator to avoid the possibility of their oxidationThe chia seed strategyWhen chia seeds are soaked or mixed with liquid they form a gellike substance that aids the body in digesting them Although soaking chia seeds in liquid before consuming them may improve the absorption of the nutrients contained within slightly for the majority of people soaking them is more than adequate in order to achieve maximum absorption of nutrientsKitchen chemistry Managing heat and oxidationOne of the most common mistakes in plantbased nutrition is killing the fats before they reach the plate ldquoOmega3s are polyunsaturated making them the most chemically fragile fats in your pantryrdquo says Dr Tehseen Siddiqui chief dietitian at Saifee HospitalThe heat shield conceptShe elaborates on the lsquobread and muffin rulersquo While Omega3s are fragile they can survive baking at 180 degree Celsius f they are encased in a moist dough The water content acts as a heat shield protecting the nutrientsNo fryingIt is not advisable to use flax or walnut oil for highheat fryingNo dark toastingIf you toast walnuts until they are dark brown the oils have likely oxidised turning a healthy fat into a proinflammatory oneOptimisation strategies The synergy secretFor you to benefit from your seeds fully you need to take them along with foods that aid in their absorption or conversion ldquoTo overcome the low conversion rate of ALA you must use synergistic foodsmdashingredients that work together to enhance absorptionrdquo says Dr Siddiqui She details four ways to extract the most nutritional benefit from your dietAntioxidant powerhouseCombine your walnuts with blueberries and dark chocolate to get their polyphenols to preserve the Omega3 fatty acids from becoming oxidised in your body and reaching your brain cells intactA touch of fatWhile seeds contain their natural fat having them after adding a touch of monounsaturated fat from an avocado is helpful for absorptionThe turmeric connectionSome research has now shown that complementing your bodyrsquos ability with curcumin which can be found in turmeric can help your body turn ALA from plants into DHA which happens to be your brainrsquos favourite form of Omega3sThe role of micronutrientsConversion requires specific cofactors a diet rich in zinc magnesium vitamin B6 and iron found in whole grains and pulses provides the enzymes necessary for fatty acid metabolismThe blockers What to remove from your dietOptimising your Omega3 levels requires more than just highquality intake it requires the removal of biological blockers ldquoEven the best plantbased diet can be undermined by common dietary staples that compete for the same enzymatic pathways effectively neutralising your effortsrdquo says Richa Anand chief dietitian Dr L H Hiranandani Hospital in PowaiThe Omega6 competitionRefined vegetable oilsmdashsuch as sunflower soybean and corn oilmdashare dense in Omega6 fatty acids Because Omega6 and Omega3 share the same enzymatic machinery for processing a high intake of these oils creates a biological bottleneck This effectively crowds out Omega3s preventing your body from converting them into usable brain fuel Swap refined vegetable oils for extra virgin olive oil mustard oil or rice bran oil to clear the pathway for brainhealthy fatsThe inflammation trapHighly processed foods loaded with trans fats and added sugars trigger systemic inflammation This inflammatory state acts as a direct antagonist to Omega3s neutralising their neuroprotective benefits Essentially a highsugar diet mops up the potential gains from your walnut and chia seed intake before they can reach your brainRefined sugarsExcess sugar triggers systemic inflammation which acts as a direct biological antagonist to Omega3s This creates a physiological zerosum game where the neuroprotective benefits of your healthy fats are effectively neutralized by the inflammatory damage of refined sugarsThe daily prescription how much is enoughConsistency is the golden rule You dont need lsquobucketloadsrsquo of seeds you need a daily habit Anand suggests the following daily targets1 7 to 10 halves of walnuts that are raw or lightly baked2 1 to 2 tablespoons of chia seeds that have been soaked in liquid3 1 to 2 tablespoons of freshly ground flaxseeds