pɹəpˈoʊnənts ʌvðə dˈaɪət bᵻlˈiːv ðæt sˈɜːʔn̩ fˈuːdz kæn ɐfˈɛkt ðɪ æsˈɪdᵻɾi pˈiː ˈeɪtʃ ʌvðə bˈɑːdi ænd ðætðə tʃˈeɪndʒ ɪn pˈiː ˈeɪtʃ kæn ðˈɛɹfoːɹ biː jˈuːzd tə tɹˈiːt ɔːɹ pɹɪvˈɛnt dɪzˈiːz.
Proponents of the diet believe that certain foods can affect the acidity (pH) of the body and that the change in pH can therefore be used to treat or prevent disease.