A food with a pH below 4.6 is high in acid. This includes many citrus fruits, plums, grapes, pomegranates, and several other fruits. Tomatoes, which are technically a fruit, are also acidic. Defining ...

Apple cider vinegar is made by fermenting apple juice. It is acidic, with a pH of 4.2. Drinking too much can cause side effects, including stomach irritation, slower digestion, acid reflux, tooth ...

Merve Ceylan is a dietitian and health writer with four years of experience writing for companies in the nutrition and health industry. Apple cider vinegar is made by fermenting apple juice. It is ...