Review Article
The Alkaline Diet: Is There Evidence That an Alkaline pH Diet Benefits Health?
Table 1
Ph of selected fluids, organs, and membranes.
| Organ, fluid or membrane | pH | Function of pH |
| (1) Skin | Natural pH is between 4 and 6.5 [17] | Barrier protection from microbes | (2) Urine | 4.6 to 8.0 [18] | Limit overgrowth of microbes | (3) Gastric | 1.35 to 3.5 | Break down protein | (4) Bile | 7.6 to 8.8 | Neutralize stomach acid, aid in digestion | (5) Pancreatic fluid | 8.8 | Neutralize stomach acid, aid in digestion | (6) Vaginal fluid | <4.7 [13] | Limit overgrowth of opportunistic microbes | (7) Cerebrospinal fluid | 7.3 | Bathes the exterior of the brain | (8) Intracellular fluid | 6.0–7.2 [19] | Due to acid production in cells | (9) Serum venous | 7.35 | Tightly regulated | (10) Serum arterial | 7.4 | Tightly regulated |
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