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5 foods your brain will love

Just like the rest of your body, the brain requires nourishment to function at its best. Yet, many people aren’t eating in a way that supports this.

When it comes to brain health—which affects our mood, memory and cognition—our overall eating pattern matters more than consuming one specific food. However, there are some foods that are particularly rich in brain-boosting nutrients that many people aren’t eating regularly. Here are five foods that you might like to consider including, as part of a whole food way of eating:

Oily fish

Oily fish are a key source of two long-chain omega-3 fatty acids called EPA and DHA, which are protective for the brain. These are the fatty acids found in high-quality fish oil supplements, however when we eat fish (rather than just consuming fish oil) we also obtain various other nutrients that are beneficial for the brain. Some examples of oily fish include salmon, sardines, mackerel, and trout.

Berries

The brightly coloured pigments in berries have potent antioxidant and anti-inflammatory properties. This means they help to prevent damage to cells, including brain cells. The purple/blue/black pigments, called anthocyanins, are especially protective for the brain. While blueberries are most well-known for this, aiming for a variety is always a good idea. Greater variety in the plant foods we consume helps to support the gut microbiome, which is constantly communicating with the brain. Both fresh and frozen berries are great options.

Walnuts

Walnuts provide a plant source of essential omega-3 fatty acids, along with other nourishing fats, fibre and beneficial phytonutrients. Regular consumption has been associated with better cognitive function so a handful makes a great snack, or they can be sprinkled into salads or used in other recipes—check out my Brain (Bliss) Balls recipe that features walnuts here.

Eggs

Eggs truly are nutritional powerhouses. Not only do they provide a source of protein and fat which can help with sustained energy, they are one of the richest dietary sources of choline. Choline is a nutrient that can be used to make chemical messengers in the brain, and it plays an important role in supporting cognition and memory. Eggs also contain a range of other nutrients, including iron, zinc and B vitamins.

Green tea

Green tea is packed full of antioxidants and can have some beneficial effects on cognition and brain function. While it does still contain some caffeine, it also contains a substance called L-theanine. This has a calming effect, helping to buffer the effects of the caffeine so you feel alert but not wired. If you’ve been trying to cut down on your caffeine consumption, switching your coffee to green tea can be a great start.

The impact of stress on your memory

Do you find yourself regularly forgetting where you put the keys? Or do you often walk into a room only to forget what you were going in there for? When we’re experiencing stress, our memory can suffer and it might feel a bit like a cloud is hovering over your brain—you can’t quite think clearly or retrieve information from your memory as efficiently.

This is because when we’re experiencing stress, our body is geared towards survival. In response to worries or perceptions of pressure and urgency, stress hormones are released and these travel throughout the body, including to the brain, to communicate a ‘danger’ signal. To your body, all stress equals danger and so it directs more resources to the essential processes necessary for survival—and less towards the ‘nice to have, but not essential’ functions. Remember, your body always has your back and is doing its best to help you stay alive, based on the messages it is receiving. 

So what can you do?

Breathe

We can’t always change our circumstances, but we can alter how our body is responding to them through the way that we breathe. Breathing diaphragmatically is a powerful way to activate the calm arm of your nervous system. Commit to 20 long, slow breaths at a certain time (or several times) each day. Linking it to another activity or task that you do every day can help to make it a habit so you might like to do it when you are boiling the kettle, for example. You might also like to practice diaphragmatic breathing any time you notice you are feeling stressed. Be kind and patient with yourself if this way of breathing doesn’t come naturally at first—you may not have breathed in this way for a long time and so it may take some practice, just like any skill.

Increase your nourishment

It is not only psychological stress that can impact our memory and brain function. The stress of poor nutrition can also play a role, and it’s often when people are under a lot of stress that their food choices tend to be less than ideal. This is problematic because the body requires even more nutrients when we’re churning out stress hormones. Focus on including more real, whole foods in your day but be mindful that you aren’t creating more overwhelm by trying to overhaul everything at once. It can be more sustainable to start with one or two small changes and building from there. A good aim can be to add an extra serve of green leafy vegetables each day. Or, perhaps you decide to swap biscuits at morning tea to some fruit, such as some berries.

Prioritise sleep

When we’re highly stressed, our sleep quality can often suffer—and along with it, our memory and mood. Adults require 7-9 hours of sleep each night and if we’re not well rested, we cannot expect to function at our best. Try to listen to your body—is it telling you that you need more rest than usual? While it can be tempting to stay up late to get more things done (particularly if you are stressed because you perceive there isn’t enough time), prioritising your sleep can help you to be more productive in the long run. If you’re having trouble sleeping restoratively, check out my tips here.

Focus on things that are in your control

Focusing on the things that you can control, rather than those that are outside of your control, can help you to better manage your stress. Bring awareness to how you are responding to stressful situations, and whether your actions are really supporting you or not. Are they helping to buffer the stress or are they adding to it? Routine can also be quite helpful, particularly if your stress is related to situations that involve some uncertainty or overwhelm. It doesn’t have to be big—some people even find that making their bed every day after they get up provides a sense of normality and a little bit of momentum for a productive day.

When you don’t think you’re stressed but your body says otherwise

When I talk to people about stress, there are those who tell me outright they are stressed and those who tell me that they’re not.  

For those who say they’re not, there will, of course, be some who genuinely do not feel stress. There are those who connect more with the experience of “worry” than “stress”. And there are also those who may think they’re not stressed and yet their bodies are showing numerous signs that they are.

How can this be?

While stress is often psychological, it can also be nutritional and biochemical. For example, you may have a great mental resilience to cope with anything life throws your way and be eating in a way that does not provide your body with the nourishment it needs to function optimally. Nutrients are what drives all of the vital biochemical processes that create health in your body. And without enough of nutrients, you’re going to be inadvertently adding to your body’s stress load.

It is possible too, to consciously think you’re not stressed and unconsciously be driving stress hormone production. This is because we have two thought systems—I like to call them Old Brain and New Brain. The problem is, they don’t talk to each other. Old brain is rapid, emotional and intuitive (with ‘intuitive’ in this instance meaning a reactive, instantaneous processing that occurs based on prior patterns, associations and experiences we’ve unconsciously concocted about what kept us safe), while New Brain is much slower, and able to calculate and rationalise. The New Brain doesn’t automatically examine the Old Brain and understand why it does what it does. New Brain doesn’t usually even know that Old Brain has made a decision and led you to feel a certain way!

Image Credit: The Invisible Load / Stephanie Antill

And this is where a significant amount of our stress comes from today. Even if your New Brain thinks you are managing just fine, your Old Brain may be busy creating meanings from the situations you are involved with in an attempt to keep you safe—and you may not even realise it.

This is why it’s always a wonderful idea to tune into your body’s messages and learn to decipher what it is trying to communicate to you.

How does stress show up in the body?

Well, this is where it gets tricky. It can be anything from digestive disruptions to poor sleep, hormonal challenges to blood pressure problems.

Regardless of whether you ‘feel stressed’ or not, your body may be reacting as if some things are stressful and trying to send you a signal if you are experiencing:

  • Low progesterone
  • Problems with your periods which might look like heavy, clotty periods, irregular periods, PMS, or debilitating menopausal symptoms
  • Conditions related to your menstrual cycle such as polycystic ovarian syndrome
  • Sugar cravings
  • Poor short-term memory
  • Thyroid challenges
  • Regularly disturbed sleep or waking up feeling tired
  • Digestive system problems such as IBS or bloating
  • Pervading fatigue or bone-deep exhaustion
  • Mental fuzziness
  • Regular anxious thoughts/feelings
  • High blood pressure or low blood pressure
  • Inflammation

If any of these symptoms are familiar to you and, no matter what you have tried, you can’t seem to get to the bottom of them, it may be related to the constant, relentless production of stress hormones. Or an intake of nutrients that is not high enough to meet your body’s biochemical needs.

What can you do about it?

First of all, you’ll need to figure out whether there are factors such as biochemical or nutritional stress that your body is dealing with, and whether this is contributing to elevated stress levels, even if you feel ‘fine’. You may like to start by focussing on increasing your intake of whole, real foods, and minimising processed foods, as this will help you either way. If increasing your nutrient intake doesn’t alleviate the symptom/s, you may like to start exploring ways to reduce stress hormone production in your body. You can find a list of suggestions in this article here.

Can’t sleep? This hormone might be why.

As you race around across the morning sipping coffee, you’re usually not thinking about how you’re going to sleep that night. You might be thanking coffee for taking the edge off your fatigue from the poor night’s sleep you just had! Yet coffee itself might be the culprit for all that tossing and turning.

Coffee—or more specifically caffeine—is directly absorbed into your body by travelling from your gastrointestinal tract across into your blood. It can also cross the blood-brain barrier where it binds to adenosine receptors, the downstream effects of which is to signal to the adrenal glands to release adrenaline. This stress hormone is designed to prepare your body to get out of danger and it does its job incredibly well.

Adrenaline drives a host of biochemical changes to allow you to escape from danger. It puts you on red alert on the inside, making your heart and thoughts race, and gives you a jittery feeling that can make it difficult to feel calm and centred, despite your best efforts. It elevates your blood pressure and diverts blood away from your digestive system to your to your arms and legs, compromising digestion—because if you’re in danger you need a powerful blood supply in your periphery to help you get away quickly. Since you’re not actually in danger, all of these biochemical changes may make you momentarily more productive and focused (or they may tip you into a very uncomfortable place emotionally, driving anxious thoughts and feelings, without you considering caffeine as a driver for this), which may be great to help you get through your full day, yet come night, the adrenaline that’s still running through your body can take a toll on your sleep.

For many people, caffeine isn’t the only trigger for adrenaline in their day—and this is usually at the heart of the problem. Any time you feel stressed, pressured or overwhelmed, you’re sending a message to your body to produce stress hormones. Most often this comes from how you think and your perception of pressure and urgency. Usually, it’s an accumulation of instances throughout your day signalling the production of stress hormones that becomes problematic for sleep, not just one cup of coffee in the morning. Although for some people one tiny cup is enough to set off a chain reaction that significantly impacts sleep. And if you’re having more than one cup and not sleeping well—or drinking coffee later in the day? It’s highly likely to be a key contributing factor.

So what is it about adrenaline and sleep? Well, if adrenaline is the hormone that’s produced when your body is in danger, you’ll start to get the idea. If you are truly at risk, your body doesn’t want you to fall into a deep, restful sleep because if you do, you may not be able to rouse yourself quickly enough to get yourself to safety.

And so you’ll toss and turn, drift off then wake up again and then drift off into a restless sleep that isn’t all that restorative. Or perhaps you’ll lie there for hours—either at the beginning of the night or somewhere in the middle—unable to sleep thanks to a mind that won’t stop racing. Frustratingly for you, your body doesn’t know the difference between the adrenaline produced as a result of actual danger and perceived danger. If you decide to take a swim in crocodile-infested waters and see two beady eyes coming your way, you’ll want adrenaline to give you the boost you need to swim as quickly as you can away from this very real danger. Yet if you read a text from your boss asking you to come into a meeting tomorrow and you instantly get worried about what it could entail (i.e. you perceive danger), adrenaline will be coursing through your blood with nothing to do but make you feel wired.

The bottom line is, if you’re having trouble sleeping, you want to avoid producing adrenaline as often as you can throughout your day. So you may like to reduce your intake of caffeine or take a break from it entirely. You will also benefit from exploring your perceptions of pressure and urgency. Are you unnecessarily adding urgency to things that aren’t urgent? Are you putting unrealistic amounts of pressure on yourself to get more done in a day than is actually possible? Reflect on how you are adding to your body’s perception of danger with your thoughts and beliefs.

Want to know more about how you can improve your sleep? You may like this article on supportive sleep hygiene habits.

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