Top revision tips from Miss Tucker
1. The right kind of fat
Firstly, brains need fats! But no ordinary fats, it needs superstar fatty acids Omega 3 and 6. These essential fatty acids are linked to preventing a decline in mental skills and memory loss, and must come from what we eat and drink. Eating nuts, seeds, oily fish or drinking fish oil supplements (like cod liver oil) are all seen to be crucial to the creation and maintenance of brain cells. Those who consume more of these fats in their diet have sharper minds and do better at mental skills tests.
Salmon is an excellent source of these essential fats. Fresh, canned or frozen salmon is fabulous in fish cake patties. Good vegetarian alternatives includes pumpkin seeds and walnuts, or frozen soya beans are a good cheap source too and are great in a stir fry.
While Omegas are good fats for brains, eating other high fat foods containing artificial trans or partially hydrogenated fats do not just compromise brain health; they can impair memory, and lower brain volume. Thankfully most of these bad fats have been removed from supermarket and the big fast food brands but they are still common place in cheaper backstreet independent takeaways and imported American supermarket sweets and snacks (like the Reese, Hershey’s, and Flipz). Give the body junk food, and the brain is certainly going to suffer.
There’s a huge amount of chemical processing in the brain which can make it highly susceptible to something called ‘oxidative’ damage but there are things called ‘antioxidants’ that are thought to protect against the harmful effects. Fortunately there is a wide variety of good antioxidants to be found in fruits and vegetables that enables brains to work well for longer periods of time. Different coloured fruit and vegetables provide the body with different types of antioxidants, with purple and blue particularly linked to a reduction in mental decline and other benefits. Blueberries for example have an antioxidant capacity significantly higher than vitamins C or E, and studies have shown improved memory with a diet including blueberries and strawberries (plus the seeds from berries are also another great source of Omega-3). In general, when it comes to berries the more intense the colour, the more nutrition in the berry. So, why not try adding some fresh berries to yogurt or a bowl of oats in the morning?
The brain needs a steady supply of other micronutrients, and without powerful vitamins B6 and B12 our brains are susceptible to brain disease and mental decline. Also, small amounts of the minerals iron, copper, zinc and sodium are fundamental to brain health and cognitive development. All dairy foods are packed with protein and the B vitamins needed for the growth of brain tissue and neurotransmitters; milk and yogurt are a great source. Lean beef is one of the best absorbed sources of iron, and also contains zinc, which helps with memory. For vegetarians, beans are a good choice of iron (plus they contain yet more omega-3 fatty acids). For zinc, the mineral vital for enhancing memory and thinking skills, pumpkin seeds are richer than many other seeds.
To enable the brain to efficiently perform it needs lots of the right type of fuel, most of which comes from carbohydrates, but specific carbohydrates effect how the brain responds. What we call ‘high glycemic’ food like white breads cause a rapid release of glucose into the blood followed by a big dip as blood sugar shoots down – and with it, your attention span. On the other hand, oats, wholemeal bread, and ‘brown’ rice and pasta have far slower glucose release enabling a steadier level of attentiveness. Low-fat popcorn, switching bread to wholemeal and oats make for cheap, easy options. Oats also are good sources of vitamin E and B, as well as potassium and zinc – which make our bodies and brains function at full capacity. You could also try dry oats in a fruit smoothie to thicken it.
Choline, neither vitamin nor mineral, is another micronutrient that is essential in tiny amounts for brain development and memory function, and concentration. You’ll find it in beans, broccoli, lean beef, yogurt and eggs (especially the yolk). Eggs are great brain food also being vitamin B rich, but stick with poached or boiled; or why not have scrambled eggs on wholemeal toast?
For sustained brain power opting for a varied balanced diet of nutrient rich foods in three separate meals a day is critical. So is drinking the equivalent of between 6-8 glasses of water a day (between 1.9 and 2.25 litres) to avoid suffering dehydration, tiredness, and lack of concentration and short-term memory. Our brains are 73% water! Avoid caffeinated drinks as they can leave you irritable, sleepless, and anxious, and they have diuretic properties that can leads to further dehydration. Instead try un-caffeinated relaxing herbal chamomile tea, which has been shown to improve cognitive function.
7. Sleep and exercise
Don’t forget that as well as a healthy diet, aiming for eight hours sleep and exercising helps to keep brains sharp. Research suggests that regular exercise improves cognitive function, slows down the mental aging process and helps us process information more effectively.