A recent conversation with a friend about acid reflux brought up a 2004 email from my father. Below content from his email is the framework in which I think about the food I eat. While the average pH value of yogurt is about 4, which is somewhat acidic, a drinkable yogurt from Trader Joe’s always settles my stomach.

“Strong alkaline food: Grape, tea, Seaweed.

Medium alkaline food: Yellow bean, tomato, pumpkin, strawberry, lemon,
spinach, banana, & egg white.

Weak alkaline food: Red bean, apple, onion, tofu, green color
vegetable.

Strong acidic food: Egg (yellow portion), cheese, persimmon.

Medium acidic food: Bacon, pork, beef, margarine, bread, wheat,
chicken & fish.

Weak acidic food: Rice, peanut, beer, clam, oil fries.

85% of cancer patients have acidic body fluid (pH< 7.4). Best acidic foods: alkaline foods ratio is 1:3”