Onions

Heartburn is frequently brought on by onions, especially when they are raw. Onions, like the other foods on this list, often give GERD patients heartburn symptoms. Onions may exacerbate or cause heartburn, although it's not entirely known how.

In one 1990s study, people with heartburn consumed a plain hamburger on one day and an identical hamburger with onions on the following day. When compared to the no-onion burger, consuming the onion burger considerably aggravated heartburn symptoms. Future research is required to decide if onions should be avoided or consumed in moderation by all people who experience heartburn. Additionally, onions contain a lot of FODMAPs (fermentable oligosaccharides, disaccharides, monosaccharides, and polyols), a group of nondigestible carbohydrates that might upset some people's stomachs. People who are sensitive to FODMAPs may experience heartburn from them.