So what has Serotonin got to do with Binge Eating, and what exactly is it anyway?
Well actually, this gives us another good example of how WHAT we eat can be closely linked to how we FEEL – the ‘food and mood’ connection!
And when we learn about this (as well as the impact of blood sugars, endorphins and stress hormones) we can gain a good understanding of what is going on in our bodies, how it can affect our feelings, and more importantly, what we can DO about it to help improve things and feel better!
Serotonin is an important ‘neurotransmitter’, a natural biochemical produced in our brains, and it helps regulate our mood – enabling us to feel stable and to control impulsive behaviour. (Many modern antidepressants work in different ways to help maintain our levels of this biochemical).
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Having ENOUGH in our system helps us to:
NOT having enough of this brain chemical might lead us to:
Many people with binge eating problems might identify with the second list, and did you see that last one? – food cravings for carbohydrates! How does that happen?
Well, to simplify a rather complicated process, two main things are necessary for the production of serotonin - Tryptophan and carbohydrates.
Tryptophan is an amino acid and we get it from the protein that we eat. Carbohydrates are then necessary for the Tryptophan to be able to move across into the brain where it can be used to produce serotonin.
So if we are feeling low and stressed and we eat some sweet or high carbohydrate food, this may then have the knock-on effect of increasing the serotonin in our brains (as well as having other effects such as on our endorphin and blood sugar levels) giving us a feeling of relief and well being (like a natural anti-depressant!).
And so, when we next feel bad again, we will repeat the same behaviour – well why wouldn’t we – we are actually self-medicating with food!
The trouble is, the effect will be short lived, especially if we are naturally low in the chemical and are eating poorly. And if we keep repeating the behaviour as in binge eating or compulsive over eating, then we can become sort of ‘de-sensitised’ to the effect - our brains can actually shut down some of the serotonin receptors which means that we need more of it - and therefore more carbohydrates - to get the same effect (a bit like needing a higher and higher dose of a pain killer because your body has gotten used to it).
This effect is called ‘down-regulating’ of the receptor sites, and the same effect is seen with the endorphin system.
So how can we help to make sure we do have enough serotonin in our system?
Well of course, please speak to your doctor if you are feeling depressed, as there may be other causes and you may benefit from some support with an anti-depressant medication or professional counselling.
Otherwise, there are three main factors to bear in mind: