With the arrival of spring, many things change: schedules, diet, activity levels, and even sleep quality.

What many people don't know is that these changes can also directly influence the gut microbiota, the ecosystem of bacteria that lives in our gut and participates in key processes such as digestion, metabolism, energy, and even immune response.

This year, there's an additional factor. A particularly intense spring is expected in terms of pollen levels, which could translate into more symptoms or greater intensity for those who already experience them.

But beyond the environment, there's a key question: why do some people react more than others?

The answer isn't just external. It's also in how your immune system responds. And there, the gut microbiota plays a fundamental role.

The microbiota: the system connecting digestion, energy, and immunity

The gut microbiota doesn't just participate in food digestion. It's a central system that regulates multiple bodily functions.

Among others, it influences:

• metabolism regulation
• energy production
• communication with the nervous system
• immune system response

In fact, a large part of the immune system is located in the gut.

This means that the state of your microbiota can directly influence how your body reacts to pollen, dust, or other external stimuli.

Why you might notice more symptoms in spring

During the change of season, many factors change simultaneously:

• sleep schedules
• light exposure
• diet
• activity level
• stress

All of this can alter the balance of the microbiota.

When this ecosystem becomes imbalanced, you may experience:

• heavier digestions
• bloating or gas
• sugar cravings
• energy slumps

But something less obvious can also occur: increased immune system reactivity.

Microbiota and allergies: what's really happening

Allergies are not just a reaction to pollen. They are an exaggerated response of the immune system.

In recent years, the increase in allergies has been linked to:

• lifestyle changes
• reduced microbial exposure
• microbiota imbalances

When the microbiota loses balance, the immune system can become more sensitive and reactive.

That's why more and more research points to the gut as a key piece in understanding the allergic response.

What the evidence says about microbiota and allergic symptoms

One of the most studied approaches is the use of synbiotics, combinations of probiotics and prebiotics designed to modulate the microbiota.

In a clinical study on people with dust mite allergy, it was observed that:

• 57% reduced their allergen sensitivity
• symptoms such as congestion, sneezing, or itching improved
• digestive well-being improved
• quality of life increased

Furthermore, the presence of strains in the gut was detected after supplementation, suggesting a direct impact on the intestinal ecosystem.

This reinforces an important idea: the state of the microbiota can influence how the body responds during times of higher environmental load.

Microbiota, energy, and cravings in spring

During this time, it's also common to notice changes in energy.

This is partly due to glucose regulation. When there are peaks and dips:

• fatigue increases
• cravings appear
• concentration decreases

The microbiota directly participates in this process, influencing energy metabolism and appetite signaling.

How to care for your microbiota in spring

Maintaining a balanced microbiota doesn't require extreme changes, but it does require consistency.

Diet

• vegetables and fruits
• legumes and fiber
• fermented foods

Habits

• maintain regular schedules
• walk after meals

Lifestyle

• prioritize rest
• manage stress

The gut also adapts to the change of season

Spring is a time of transition.

And the gut, as a regulatory center, also adapts.

Therefore, the focus should not only be on managing symptoms, but on understanding and caring for the system that regulates them.