Étiquette : brain health

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From SAD to glad, how to beat the winter blues

Today I am writing about Seasonal Affection Disorder (SAD) and how to manage it. SAD (what great acronym!) is a transient depression, typically happening during winter months (there is however summer-onset SAD too) when there is less natural sunlight and shorter daylight hours. Since I have lived in London, I have always struggled with it. Now are the shorter days in the year, the weather is grey, rainy and the temperatures unpleasantly mild. It seems never ending…

SAD facts
The prevalence of SAD varies depending on geographical locations and other factors. It is estimated that up to 10% of the population suffers from SAD, and it is more prevalent in women. It is also more widespread in those who had depression in the past, suffer from mental health disorder or have a family history of SAD. Interestingly, it is more common in people born in Spring and Summer.

SAD symptoms and mechanism
SAD usually manifests as low mood, decreased pleasure and increased irritability, lethargy, tiredness, weight gain…
The physiopathology of SAD is not yet completely clear, hormonal dysregulation and low vitamin D are likely involved.

How to fight SAD?
You can combine various strategies if you suffer from SAD.

  • Light therapy: Daily early morning exposure to bright light really helps with SAD. You can buy these devices online, aim for at least 10,000lux.
  • The alternative, and for me a must, is to spend time outdoors, particularly in the morning. Walk to your bakery or coffee place, sweep the leaves, walk the dog… This naturally increases your exposure to daylight, which is effective even in the cloudiest weather.
  • Interestingly, people suffering from SAD show different dietary habits, such as more snacking and more abundant dinners. However, no nutrition intervention has been proven efficient in managing SAD yet. Radically changing your diet when you are struggling is never a good idea, but if you want to reduce snacking, increase wholegrains and fibre rich food for better satiety, and lean protein for easier digestion.
    Make sure you get enough vitamin D and limit alcohol.
  • Physical activity helps release « good mood » hormones that will help you feel better. Again, no need to be extravagant, a 15-30min yoga or weight session, a brisk walk in the neighbourhood will do the job, even more so if share it with a friend.
  • Social connections is indeed one of the easiest way to increase happiness. So for your own well being, be (selfishly) kind to others 🙂
  • You can try mindfulness and relaxation if you like this sort of things. Personally, it makes me worse.
  • Anything that helps decrease your stress levels will help, as well as having things to look forward to.
  • Last, but absolutely necessary, seek professional help if you feel that SAD has too big an impact on your life.

My dear readers, if you suffer from SAD, soon the days will get longer and the skies brighter. Close your eyes and imagine your dream place. Mine is anywhere by the ocean, on a sunny day… Much love x

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Building habits (part 4): the joyful path to lasting change

When it comes to personal development, there’s a common misconception that building habits requires an iron will and unyielding discipline. While discipline can be helpful, it’s not the sole or even the most effective method for creating lasting habits. Forcing yourself to do something is not the recipe for success.

In fact, building habits that stick often requires a healthy dose of enjoyment. When we find something enjoyable, the neurotransmitter dopamine is released in our brain. Dopamine plays a crucial role in building habits and, more broadly, in the process of habit formation.

Here’s how dopamine is involved in the habit-building process.

  1. Reward system activation: Dopamine is closely associated with the brain’s reward system. When you engage in a behaviour that your brain perceives as rewarding or pleasurable, such as eating a delicious meal, completing a task, or achieving a goal, dopamine is released. This release of dopamine creates a positive feeling and reinforces the behaviour, making you more likely to repeat it in the future.
  2. Associative learning: Dopamine helps establish associations between a specific cue or trigger and the reward associated with a behavior. When you engage in a behaviour that is followed by a dopamine release, your brain begins to link the cue or context with the positive feeling of reward. Over time, this association becomes stronger, making it more likely that you will engage in the behaviour when exposed to the same cue or context.
  3. Motivation and desire: Dopamine is involved in motivation and desire. It can increase your drive to pursue goals and engage in activities that you find rewarding. This motivation can be especially helpful when you’re trying to establish new habits, as it can make you more inclined to initiate and stick with them.
  4. Habit loop reinforcement: As a habit forms, it becomes a part of a habit loop, which consists of a cue, a routine, and a reward. Dopamine plays a central role in this loop by reinforcing the connection between the routine (habit) and the reward. The anticipation of the reward, driven by dopamine, motivates you to perform the habit consistently.
  5. Craving and anticipation: Dopamine is involved in the anticipation of rewards. This means that even before you engage in a habit, your brain may release dopamine in response to the expectation of the reward associated with that habit. This anticipation can drive you to perform the habit to experience the reward, further solidifying the habit.
  6. Habit formation: Over time, as you repeatedly engage in a habit, the release of dopamine becomes increasingly associated with that habit. This makes the habit more ingrained and automatic because your brain has learned to associate the behaviour with a positive outcome (the dopamine release).

To conclude, instead of forcing yourself into doing something that you don’t want to do, find a way to make this change enjoyable. Listen to a podcast while you run or do the dishes, brew your favourite tea while you calculate your taxes, set up a nice table for your meal…

Find the rest of the « building habits » series here.

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Building habits (part 3): essential rules

In the first article, I explained how habits rely on our brain autopilot and support our executive functions. Whatever is your goal, there are key rules when implementing your habits.

1 – Something is better than nothing

To form a new habit, you need to activate your neural networks. It means you need to stimulate them: doing something will, doing nothing won’t. Start small and build on.

2 – Consistency matters the most

When you start working on new habits, your executive brain is still activated and actions are very deliberate. As the new routine is implemented, the autopilot is activated. The more often you repeat the new action, no matter how small, the stronger and the more efficient the autopilot becomes. Eventually the autopilot takes over: the habit is formed.

This has to do with synaptic plasticity, which is as Wikipedia simply puts it « the ability of synapses to strengthen or weaken over time, in response to increases or decreases in their activity ». Repeated actions, over time, become habits. Random actions don’t.

3 – Repeated, « good enough » actions

When trying to form new habits, we sometimes set the bar too high, feel discouraged and can’t be consistent. Reduce your threshold of what is « good enough » to focus on small, achievable and sustainable actions that you can do consistently. This will activate the autopilot and embed the new habit.

In a few words, regular small steps will take you to your objective.

As I started a new job, one of my objectives is to build a routine around publishing articles here. I am aiming for one per week but need to find the right cues (time, place etc).

And you, are you trying to implement a new habit in your life?

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Building habits (part 2): key steps

In the first article I explained how habits support the executive functions of the brain. It is estimated that 40% of our actions rely on habits, this is why building habits that serve your goals is essential. Here are a few tips for that.

Tip 1: Identify the habit

The new habit or routine is the behaviour you want to start or change. This can be exercising, stop adding salt, walking more. I will take the example of my Saturday 8.30am yoga class.

Tip 2: Set reminders

One of the key aspects to forming a new habit is remembering everything you need to remember in order to follow through on your aspiration. Forgetting is easy, as our brains always take the easy way, the way of current habits 😉

In my case, I have 2 reminders for this yoga class: one to remember to book the class, and one popping on my phone 30mins before the class.

Tip 3: Start small

This means being specific, and to think of the when, where, how. My aim was not to go to yoga everyday, but to commit to this one, every Saturday. If you can’t proceed to your chosen habit (class cancelled, preferred food not available etc) , have an alternative so that your brain does not associate the reminder to nothing. My alternative to yoga is running. Anything is better than nothing.

Small actions are the seeds for the habit to grow, they activate your neuronal networks.

Tip 4: Reward yourself

We are wired to seek pleasure. Our brain releases « happiness » chemicals during reward, which help the remodelling of neuronal circuits and new habits to stick. We usually think of extrinsic rewards (money, food, objects) but intrinsic rewards work just as well: this feeling once you finish your run, the calm after yoga, learning a new skill, being more energised etc. Remember that the reward comes from the smallest action towards your goal, so the smallest step towards changing or building a habit is rewarding.

After my yoga class, I feel both relaxed and energised, I am (usually!) satisfied with the progress made, and seeing my teacher is a pleasure in itself.

Tip 5: Repetition

As you repeat an action, the new neuronal circuits reinforce and it starts to require less effort. With time, the action is transferred from executive brain, that requires a lot of mental energy, to the autopilot brain and it becomes easier and almost automatic.

And you, what habit would you like to build to achieve your goals?

My current challenge is to eat less salted butter to decrease my overall salt consumption 🙂

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Building habits (part 1) : why habits matter

Today’s post will be the first of a series about habits (and change). The objective is to give you an explanation of why we have habits, and how we can change them to make them literally work for us. Why do I write about habits here? Because a lot of our lifestyle choices (diet, exercise, alcohol consumption, smoking…) consist in habits, and if we want to make a lifestyle change last, having some basic knowledge in psychology and neuroscience can help. Let’s start by having a look at our brain.

Isaac Tobin/Dan Harris/ABC News

As human we have a uniquely large executive brain that support executive functions such as working memory, flexible thinking, impulse control, self monitoring, motivation, emotional control, willpower, planning, prioritisation and task management. These functions are future-oriented and enable us to make decisions according to our objectives.

Executive functions require a lot of mental energy, which can be drained by the demands of our busy, modern lives, leaving us feeling low.

This is where the autopilot, that sits deep within our brain, comes handy. The autopilot does not interact with motivation, it is made of habits. Habits are stimulus-response behavioural task, they are automatic. Brushing your teeth, going to the gym every Monday lunchtime, eating porridge at breakfast, adding salt to your food….

If our habits support our goals, we rely on autopilot more and have more mental energy available for our executive brain. We are more motivated, we perform better. When our habits don’t align with our objectives, our executive brain uses extra mental energy to suppress them, eventually we risk feel drained. The problem is that we cannot always replenish our mental energy enough, or reduce the demands of our executive brain.

Therefore, to cope with the demands of our busy lives, we can build habits that support our goals, while changing the habits that go in their way.

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Vitamin D and your brain

In the UK, vitamin D deficiency affects 23% of adults (21% in those over 65yo), in winter the prevalence even rises to 40% (29% in those over 65yo). Vitamin D is mainly known for its role in the regulation of calcium homeostasis and in bone integrity, but it also plays an important role in the brain and is even considered neuroprotective.

Vitamin D promotes amyloid metabolism and clearance, neuronal and synaptic growth and neurotransmission. Many studies show the association between low vitamin D status and cognitive impairment associated with ageing (dementia). More recently, a study looked at vitamin D in 4 areas of the brain, 2 associated with Alzheimer, 1 with dementia and 1 with no association to cognitive decline. They found that high concentration of vitamin D in the 4 areas were correlated with better cognitive function. In another study, MR analyses suggested a causal effect of vitamin D deficiency on dementia.

The exact mechanisms by which vitamin D acts on cerebral health are not yet elucidated, but one thing is certain: whether it is for your bones or brain, take your daily 10 microgram vitamin D supplement between October and March.