It’s also worth being clear about what this research does and doesn’t show. This was a cross-sectional study, meaning it captured a single snapshot in time. We can’t say whether low vitamin D causes H. pylori infection, whether the infection depletes vitamin D, or whether something else is driving both. Most importantly, vitamin D is not a treatment for H. pylori. Standard treatment involves antibiotics combined with acid-suppressing medication, and supplementation is not a substitute for that.
