While they might be chockfull of healthy nutrients like lycopene, Chutkan tells WebMD that tomatoes are also highly acidic and likely to cause heartburn in those who are prone to it.

Are tomatoes naturally acidic?

Citric acid is the most commonly found natural acid in tomatoes. Citric acid is often used in food flavoring and as a preservative due to its ability to kill bacteria. It is particularly used in soft fruit drinks to provide that sharp flavor. In addition to this, it is integral to the citric acid cycle in the body.

Is tomato high in acid?

Heartburn and Tomatoes While they might be chockfull of healthy nutrients like lycopene, Chutkan tells WebMD that tomatoes are also highly acidic and likely to cause heartburn in those who are prone to it. The acid antidote may be a sour ball, according to Daniel Mausner, MD.