There is ongoing debate about the impact of diet on body pH and cancer. The alkaline diet, which emphasizes foods that supposedly increase alkalinity in the body, has gained popularity. Proponents claim that such a diet can prevent or treat cancer by altering the body's pH. However, scientific evidence supporting these claims is limited. The body's regulatory systems maintain blood pH within a narrow range regardless of diet, and there is no conclusive proof that dietary-induced pH changes can directly affect cancer progression.