回复：人体的酸碱度相对恒定 (basic biology)

想用改变食谱来影响体内的pH，恐怕是太低估了身体的调节作用了，是不切实际的.

I am not sure about this: I found out many people have trouble for ceratin type of foods, somehow, after you have these food, the body has very bad reaction.

Foe example, meat,ice cream, whenever I eat these stuffs, my body reaction is very negative, and skin also got problem. I also had big problem with tomato, juice, and more.. After eatting these food, I easly got irritated, tired, anger and impatience. Based on your saying, my 身体的调节作用 should help me to recover, but it did not. My body does not 调节at all.

I did not know the reason before, my family do not have problem with these foods.
After I change my eating habbit a few years ago (gradually), I feel much better, I do not have the body reaction any more. Although, if I eat above listd food , I still have the same reaction, although the reaction is slighter. I can only guess my body has changed, and get some balance better