Edit Requests 

"The relationship of acid-base homeostasis and diet and disease "has been a subject of considerable speculation for at least several centuries".[2]"
 This paragraph has been paraphrased and yet only partially quoted. This bends the meaning of the original source statement. Why not use the whole sentence quoted and keep it accurate?
"The study of acid–base equilibrium and its relationship to the diet and disease has been a subject of considerable speculation for at least several centuries."
 The author should also be atributed in the text. ~~~~