Happiness and Depression Could Be Steered By the Same Genes

Happiness and Depression Could Be Driven By the Same Genes

Genes are the secret-keepers. Within their tiny walls are so many answers to the whys and the whats of our physical and mental health. Our genetics though, are only one part of our story – and they may not have as much power to write our script as we may have once thought.

The more we learn about mental health, the more we realise the importance of the interaction between nature (genetics) and nurture (the environment). There is no single gene that ‘causes’ mental ill-health. If there was, everyone with the gene variation would go on to develop the symptoms that are associated with it. 

So if genes aren’t the full story, what’s missing?

There are genes that influence the onset of symptoms, but genes are not destiny. The key is the environment. If someone has a genetic vulnerability for mental ill-health, an adverse environment can steer this vulnerability in ways that compromise mental health. What’s fascinating, and gives us reason for optimism, is that a more positive, supportive environment can steer the same genetic vulnerability in ways that strengthen mental health. 

In a study published in the journal, Molecular Psychiatry, researchers have explained that the genes involved in mental ill-health could also nurture greater mental resilience. Someone with a genetic vulnerability to depression, for example, will do worse in a harmful environment than people without the genetic vulnerability, but in healthy, positive environments, they may do better than those without the vulnerability. 

‘If you take a gene that is linked to mental illness, and compare people who have the same genetic variant, it becomes clear that what happens to their mental health is based on their environment.’ – Professor Elaine Fox, Oxford University.

The same gene can work for us or against us. What’s that about?

Researchers suggest that the environment switches on a genetic vulnerability through its influence on our cognitive biases. These are the mental filters that we tend to look at the world through. 

‘Cognitive biases are when people consistently interpret situations through particular mental ‘filters’ – when people have a cognitive bias that emphasizes negative aspects or thoughts, they are more at risk of mental health disorders.’ – Professor Chris Beevers, University of Texas, Austin.

Someone with a negative cognitive bias will be more likely to turn their attention to threat or negative information. In situations that are neutral or ambiguous, a negative cognitive bias will interpret or explain those situations negatively.

If a friend is running late, for example, someone with a negative cognitive bias might interpret this as evidence that the friend doesn’t really want to be there. Someone with a positive cognitive bias, for example, might be more likely to explain the same situation as the friend was unexpectedly held up and that it was nothing to do with wanting to be there. 

Think of cognitive biases as looking through a stained glass window. If the glass is blue, we will see the world outside with a blue tinge. If the glass is covered in dust, we will see the world as a dusty one. If the glass is clear, this will be our view of the world and the people who come close enough to the window for us to notice. Depending on the environment, genes can change the ‘window’ through which we see the world. A positive environment will give us a positive view, a negative one will muddy it.

‘… some genes can make people more sensitive to the effects of their environment – for better or worse … If you have those genes and are in a negative environment, you are likely to develop the negative cognitive biases that lead to mental disorders. If you have those genes but are in a supportive environment, you are likely to develop positive cognitive biases that increase your mental resilience.’ – Professor Elaine Fox.

What is it about an environment that causes breakage?

More research is needed to understand the relationship between genetic vulnerabilities and environmental ‘switches’. There is a call to combine research about mental health genetics and research about cognitive biases. There is plenty of research about each separate field, but after reviewing a number of studies, researchers are convinced that the key to understanding more about our mental health, and more importantly how to manage it, lies in the merging of the two. 

What does it all mean? 

We all have our fault lines – the vulnerabilities that are part of being human. When those vulnerabilities are genetic, they will often stay hidden. Our only clue will be the symptoms they give life to, most likely when our environment gives them a push.

Our genes are our environment are deeply connected. We can’t change our genes, but we can influence our environment. This doesn’t mean that all that is needed for strong mental health is a change of environment. Even if it was that simple – which it’s not – changing the environment isn’t always possible. 

Further research is needed to understand the relationship between genes, the environment, and mental health. What we know for certain is that the environment around us matters, for better or worse. The people around us, the family we grew up in, our physiology, our work culture, the food we eat, the quality and quantity of sleep and exercise we get, the air we breathe, the pollutants and toxins we are exposed to – it all matters.

Anything you can do to make your environment better for you will be important:

  1. Toxic people will contaminate your self-esteem and the way you view the world. Whenever you can, show them the door. Now slam it shut behind them. Now check it to make sure it’s locked. Done? Good. Great. You’ve probably been wanting to that for a while. 
  2. Get plenty of exercise. This will increase vital neurochemicals and help to build the structure of the brain for the better, protecting and promoting stronger mental health. 
  3. Sleep. Your brain loves it like a favourite thing.
  4. Spend time deliberately focusing on positive things. It’s easy to get swamped by the bad, but when you can focus on something that stirs up the feel-good, it will change the structure of your brain for the better. It doesn’t have to be anything big – a text message that makes you happy, a feeling, a photo, a memory – anything that stirs something lovely in you. 20 seconds is enough to start the rewiring. Read more about that here. 

And finally …

Researchers are looking deeper into the combined influence of genetics and the environment on our mental filters. The hope is for a greater understanding of how genetics and the environment interact to affect our mental health. The more we can widen our knowledge, the more this will open up the way for effective treatment and management options, and ways to nurture mental health and mental resilience for all of us.

2 Comments

Barbara

I needed this.
Is it true that Depression usually skips a generation ?
My kid swears I bi polar I am not.
I am still here because of you !

Reply
Hey Sigmund

Barbara I’m so pleased you found this. We’re still not sure how the genetics of depression work, but it seems that there are genes that make people more likely to get depression. Not everyone who has the gene that makes them vulnerable to depression, will go on to get depression. It depends a lot on the environment – stress, the family you grew up in, the relationships around you, the food you eat, the air you breathe, the chemicals and toxins you’re exposed to and of course physical things like chronic pain will also make a difference. This means that it could easily skip a generation or a few generations. It could also be in some families but not others of the same generation. They’re getting closer to understanding it though and closer to finding a cure. I’m so pleased you’re still here. Stay. You are needed and wanted and important. Keep fighting for you.

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“Karen Young - Hey Sigmund has such a wonderful way with words especially around anxiety. This is her latest beautiful picture book that explains anxiety through the lens of the Polyvagal theory using the metaphor of a house. This shows how sometimes anxiety can be hard to notice. I think this book can help kids and teens better understand stress and anxiety. I loved it! This would be great for homes, schools and in libraries.
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Of course we love them, no matter what - but they need to feel us loving them, no matter what. Especially when they are acting in unlovable ways, or saying unlovable things. Especially then.

This is not ‘rewarding bad behaviour’. To think this assumes that they want to behave badly. They don’t. What they want is to feel calm and safe again, but in that moment they don’t have the skills to do that themselves, so they need us to help them. 

It’s leading with love. It’s showing up, even when it’s hard. The more connected they feel to us, the more capacity we will have to lead them - back to calm, into better choices, towards claiming their space in the world kindly, respectfully, and with strength. 

This is not about dropping the boundary, but about holding it lovingly, ‘I can see you’re doing it tough right now. I’m right here. No, I won’t let you [name the boundary]. I’m right here. You’re not in trouble. We’ll get through this together.’

If you’re not sure what they need, ask them (when they are calm), ‘When you get upset/ angry/ anxious, what could I do that would help you feel loved and cared for in that moment? And this doesn’t mean saying ‘yes’ to a ‘no’ situation. What can I do to make the no easier to handle? What do I do that makes it harder?’♥️
Believe them AND believe in them. 

‘Yes this is hard. I know how much you don’t want to do this. It feels big doesn’t it. And I know you can do big things, even when it feels like you can’t. How can I help?’

They won’t believe in themselves until we show them what they are capable of. For this, we’ll have to believe in their ‘can’ more than they believe in their ‘can’t’.♥️
Sometimes it feels as though how we feel directs what we do, but it also works the other way: What we do will direct how we feel. 

When we avoid, we feel more anxious, and a bigger need to avoid. But when we do brave - and it only needs to be a teeny brave step - we feel brave. The braver we do, the braver we feel, and the braver we do… This is how we build brave - with tiny, tiny uncertain steps. 

So, tell me how you feel. All feelings are okay to be there. Now tell me what you like to do if your brave felt a little bigger. What tiny step can we take towards that. Because that brave is always in you. Always. And when you take the first step, your brave will rise bigger to meet you.♥️
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#anxietyinkids #consciousparenting #parentingtips #gentleparent #parentinglife #mindfulparenting #childanxiety #heywarrior
If anxiety has had extra big teeth lately, I know how brutal this feels. I really do. Think of it as the invitation to strengthen your young ones against anxiety. It’s not the disappearance of brave, or the retreat of brave. It’s the invitation to build their brave.

This is because the strengthening against anxiety happens only with experience. When the experience is in front of you, it can feel like bloodshed. I know that. I really do. But this is when we fight for them and with them - to show them they can do this.

The need to support their avoidance can feel relentless. But as long as they are safe, we don’t need to hold them back. We’ll want to, and they’ll want us to, but we don’t need to. 

Handling the distress of anxiety IS the work. Anxiety isn’t the disruption to building brave, it’s the invitation to build brave. As their important adult who knows they are capable, strong, and brave, you are the one to help them do that.

The amygdala only learns from experience - for better or worse. So the more they avoid, the more the amygdala learns that the thing they are avoiding is ‘unsafe’, and it will continue to drive a big fight (anger, distress) or flight (avoidance) response. 

On the other hand, when they stay with the discomfort of anxiety - and they only need to stay with it for a little longer each time (tiny steps count as big steps with anxiety) - the amygdala learns that it’s okay to move forward. It’s safe enough.

This learning won’t happen quickly or easily though. In fact, it will probably get worse before it gets better. This is part of the process of strengthening them against anxiety, not a disruption to it. 

As long as they are safe, their anxiety and the discomfort of that anxiety won’t hurt them. 
What’s important making sure they don’t feel alone in their distress. We can do this with validation, which shows our emotional availability. 

They also need to feel us holding the boundary, by not supporting their avoidance. This sends the message that we trust their capacity to handle this.

‘I know this feels big, and I know you can do this. What would feel brave right now?’♥️

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