The rise in asthma cases, especially in urban areas, has led to research on preventive measures, driven by the hygiene theory which suggests early exposure to infections may protect against allergic diseases.
The study evaluated the effects of three specific probiotics (Lacticaseibacillus rhamnosus, Lacticaseibacillus paracasei, and Bifidobacterium animalis ssp. lactis) on asthma using mice, testing different concentrations over 26 days prior to allergen exposure.
Results showed that none of the probiotics effectively reduced asthma-related symptoms like airway inflammation and bronchial hyperresponsiveness, indicating that the effectiveness of probiotics varies by strain and dosage, prompting the need for further research.