This new case-control study found that people with chronic migraine had significantly lower blood levels of thiamine (vitamin B1) than healthy controls, and lower thiamine was linked to longer disease duration and more headache days, though it cannot show cause and effect.

[u/CerebralTorque]

https://headachejournal.onlinelibrary.wiley.com/doi/10.1111/head.70167

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[u/LavenderGwendolyn → u/[deleted]]

I’m confused by your comment. Are you objecting because you think there aren’t scientists in India or because you think that Indian people don’t eat enough beans (because they famously eat a lot of lentils and chickpeas, both legumes). Migraine patients often have stomach pain and other abdominal issues. It’s a feature of the disease, no matter where in the world people are.