Here Are the Top 10 Most Acidic Foods to Avoid

9. Garlic and onion

For those who already have acid reflux, it is not recommended to eat garlic. Moreover, it can cause heartburn and an upset stomach too. Onions (especially raw) are also on the list of dangerous products. If you already have heartburn and you like eating burgers, it’s better to exclude the onions from your toppings.

• pH of garlic — 5.8
• pH of red onion — 5.30 — 5.8