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Unraveling the MSG-Headache Controversy: an Updated Literature Review
Edmond Ahdoot1, Fred Cohen2,3
1Department of Neurology, Icahn School of Medicine at Mount Sinai, Mount Sinai Hospital, New York, NY, USA.
Purpose Of Review:
To review the evidence and role of monosodium glutamate (MSG) as a headache and migraine trigger.
Recent Findings:
MSG is a common food additive, has widely been linked as a trigger of headache, as well as other symptoms. However, the evidence for MSG as a causative agent for headache is debated. Various clinical trials over the past several decades have reported conflicting results, with studies suggesting that MSG does and does not increase the incidence of headache. However, the dosages of MSG exposure are often inconsistent across studies, with many studies administering a dose significantly higher than the average consumption.. Additionally, there are misconceptions about which foods and cuisines have MSG in them. MSG could be a potential trigger for migraine and headaches. It is unclear exactly how MSG plays into the migraine pathophysiology. It's crucial to accurately determine if MSG is present in one's diet to evaluate its potential impact on headaches.
Insights
Monosodium glutamate (MSG) is debated as a headache and migraine trigger. While some studies link MSG to headaches, conflicting results and inconsistent dosages in research complicate conclusions about its role.
Area of Science:
- Neurology
- Gastroenterology
- Food Science
Background:
- Monosodium glutamate (MSG) is a widely used food additive.
- MSG has been anecdotally linked to various symptoms, including headaches and migraines.
- The scientific evidence supporting MSG as a direct headache trigger remains controversial and debated.
Purpose of the Study:
- To critically review existing scientific literature on the role of MSG as a headache and migraine trigger.
- To evaluate the evidence for and against MSG's causative role in headache and migraine.
- To clarify the current understanding of MSG's potential impact on neurological symptoms.
Main Methods:
- Systematic review of clinical trials and scientific studies investigating MSG and headaches.
- Analysis of evidence from past decades, noting conflicting results and methodological inconsistencies.
- Examination of dosage variations in studies and comparison to average dietary MSG consumption.
Main Results:
- Conflicting results exist across numerous studies regarding MSG's effect on headache incidence.
- Many studies used MSG dosages significantly higher than typical dietary intake, potentially skewing results.
- Misconceptions persist regarding the presence of MSG in various foods and cuisines.
- MSG is identified as a potential trigger for migraines and headaches, though the exact pathophysiological mechanism remains unclear.
Conclusions:
- The evidence for MSG as a definitive headache and migraine trigger is inconclusive and debated.
- Inconsistent study methodologies, particularly dosage, contribute to the conflicting findings.
- Accurate dietary assessment of MSG intake is crucial for evaluating its potential role in individual headache experiences.
