Sneezing. A blocked or runny nose. Itchy, watery eyes. Constantly reaching for a tissue?
If hay fever has you feeling like this every spring, you probably think of your nose and sinuses as the problem.
But there’s another part of your body worth paying attention to – your gut.
Your gut and immune system are closely connected, and your gut microbiome plays an important role in your overall health. Your gut also communicates with your respiratory system through what’s known as the gut-airway axis.
So, what does your gut actually have to do with hay fever?
Your gut is more than a digestive system
Your gut is home to trillions of microorganisms, including bacteria, fungi and other microbes that make up your gut microbiome.
These microorganisms do much more than help with digestion. They interact with your gut lining, produce important compounds and communicate with your immune system.
A healthy and diverse gut microbiome helps support a healthy gut environment, which is important for digestion, nutrient absorption and normal immune function.
This is one reason why your gut can have an impact far beyond your digestive system.
Meet the gut-airway connection
Your gut and respiratory system might seem completely separate, but they are closely connected.
The gut-airway axis describes the communication between the microorganisms and immune activity in your digestive tract and those in your respiratory system.
Your gut microbiome produces compounds such as short-chain fatty acids that can influence immune activity throughout the body. The gut and respiratory tract are also both mucosal surfaces, meaning they share important aspects of their immune environment.
This connection is particularly interesting when it comes to allergic conditions such as hay fever.
What does this have to do with hay fever?
Hay fever, also known as allergic rhinitis, occurs when your immune system reacts to normally harmless substances such as pollen.
When you inhale pollen, your body can recognise it as a threat and trigger an allergic response. This involves the release of histamine and other inflammatory chemicals, leading to familiar symptoms such as sneezing, congestion, a runny or itchy nose and watery eyes.
But the way your body responds to allergens isn’t determined by pollen alone.
Your overall health, including your gut microbiome, is part of the bigger picture.
Your gut microbiome matters
A healthy gut microbiome thrives on variety.
Fibre-rich plant foods such as vegetables, fruits, legumes, wholegrains, nuts and seeds provide food for beneficial gut microorganisms. Eating a wide variety of plant foods helps support microbial diversity and the production of beneficial compounds.
Your gut microbiome is also influenced by many other factors, including stress, sleep, exercise, diet, alcohol and medications.
What about probiotics?
Probiotics are another way of supporting the gut microbiome. They are live microorganisms that provide health benefits for your overall health and wellbeing.
But not all probiotics are the same.
Different strains have different properties and can interact with the body in different ways. Research into allergic rhinitis has found that certain probiotics can improve allergy-related symptoms and quality of life, although results vary between different strains and individuals.
The right probiotic needs to be considered alongside your individual gut health, digestive symptoms, diet, lifestyle and overall health. For some people, probiotics can be a useful part of a broader treatment plan to support the gut microbiome and manage allergic symptoms.
Getting answers with a GI-MAP Test
If you’re experiencing allergies, finding out what is actually happening inside your gut can be the missing piece of the puzzle.
At MNHC, we use a GI-MAP stool test to take a detailed look at the gut environment, including beneficial bacteria, other microorganisms and important digestive and inflammatory markers.
This gives our naturopaths a much clearer picture of your individual gut health. Rather than simply guessing which foods, supplements or probiotics you need, the results can help identify areas that need attention and guide a targeted plan to support your gut microbiome.
And this is where looking at the gut can become particularly useful for people with allergies.
If you’re experiencing hay fever alongside bloating, constipation, diarrhoea, reflux or other digestive symptoms, investigating your gut can uncover another important part of the picture. Supporting your gut health can then become part of a broader approach to supporting your body’s response to allergens.
So, can improving your gut health help your allergies?
Yes – your gut is an important part of the bigger allergy picture.
Hay fever is triggered by allergens but the severity of your symptoms is influenced by how your body responds to those allergens. With the gut microbiome playing such an important role in communication between the gut, immune system and respiratory tract – gut health is crucial to investigate and support when looking at allergic conditions.
Sometimes, finding clearer answers to your allergies starts by looking somewhere you may not have expected – your gut.
What this means
Pollen might be triggering your hay fever, but there is more to allergies than the trigger itself.
We know your gut microbiome, digestive health, immune system and respiratory system are all connected. Therefore supporting your gut health can be a vital part of supporting your body’s response to allergens.
If you’re struggling with allergies, finding out more about what’s happening inside your gut can give you crucial information – and potentially uncover areas that have been overlooked.
Our naturopaths take a personalised approach to allergies, looking at the individual rather than simply treating the symptom. Where appropriate, testing such as a GI-MAP test can help us get a much clearer picture of your gut health and develop a more targeted treatment plan overall.