14/04/2026
Sodium metabisulfite.
You’ve probably seen it on labels without thinking much about it. Sodium metabisulfite is a preservative used to keep food looking fresh and lasting longer. But for some people, especially those living with COPD or other respiratory conditions, it’s worth paying closer attention.
This ingredient can release sulphur dioxide, which can irritate the airways. Some people notice more coughing, tightness, or shortness of breath after eating foods that contain it. Not everyone reacts the same way, but if your breathing feels off and you cannot explain why, it might be something to look into.
It can also affect digestion. Some people report bloating, stomach discomfort, or nausea. There is also growing discussion about how sulphites may disturb the balance of gut bacteria, which plays a role in immunity and overall health.
And another thing that often goes unnoticed is that it can reduce certain vitamins in food, especially vitamin B1. So even when you think you are eating something nutritious, the value may not be quite the same and you will find sodium metabisulfite in more places than you might expect. Dried fruits, wine, processed potatoes, sauces, and packaged foods are common sources. It is also often used in jars and canned foods like chickpeas, lentils, and other legumes to preserve colour and shelf life.
This is why reading labels matters. Look out for names like sodium metabisulfite, sulphites, sulphur dioxide, or codes like E223. The more familiar you are with what is in your food, the more control you have over how it may affect you.
Self awareness is powerful. If you start noticing patterns between what you eat and how you feel, trust it. Small changes can make a real difference over time.
Taking a moment to read a label might not seem like much, but for your lungs and your overall health, it can be an important step.
Always try to eat fresh as much as possible. The closer your food is to its natural state, the less likely it is to contain additives that may affect your breathing and overall health.
And yes… I’ve become a bit of a label-reading warrior myself.
If it’s not supporting my body, I don’t ingest it.
Let´s get Back to Breathing