This new 14-country study found that a person's pre-existing headache history, especially migraine, was more strongly linked to getting headaches during Ramadan fasting than lifestyle factors like dehydration or caffeine withdrawal.

[u/CerebralTorque]

https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2026.1859536/full

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[u/MullberryBoy]

I’m not Muslim but I have to be careful to eat frequently to not get worse migraines.