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cucciaman OP t1_itw76tz wrote

Reply to comment by PeanutSalsa in We're a group of people with gut health issues, microbiome researchers, and physicians here to answer your questions on the gut microbiome and digestive health (IBS, IBD, and more). Ask us anything! by cucciaman

>Why is monosodium glutamate (MSG) such a trigger of headaches for people?

Hey /u/PeanutSalsa,

MSG, a common food ingredient is a trigger of headaches for some people because it contains an excitatory neurotransmitter (glutamate). This means that it can cause nerves to fire more easily, which can lead to headaches. This effect will vary from person to person.

-RK

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