The Alkaline diet is based on the premise that achieving a balanced body pH promotes optimal health.
It steers people toward alkalinic to neutral pH foods rather than acidic foods. On this diet, it’s not the pH of a food that matters – what matters is the food’s effect on the body’s pH once we eat it. For example, citrus fruits contain acids but this diet believes eating citrus makes our body more alkaline.
Specific pH classifications of individual foods vary depending on your source.