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Alcohol
Ethanol in beer, wine, and spirits. It irritates the gut, disturbs sleep, and blocks histamine breakdown.
Who reacts
Everyone, in a dose-dependent way.
Typical onset
0 minutes to 24 hours after you eat it
Linked symptoms
Poor sleepStrong evidence
Heartburn or refluxStrong evidence
HeadacheStrong evidence
FlushingStrong evidence
DiarrheaModerate evidence
Low moodModerate evidence
Anxiety or jittersModerate evidence
Where you find it
High:Red wine · White wine · Spirits (vodka, whisky)
Medium:Beer