The alkaline diet is a diet fad and type of nature woo that has recently gained quite a bit of popularity. The guiding idea is that altering your blood pH through diet change to make it more alkaline is a means to health benefits. As an idea, it is as stupid and insane as they come, because i) ) changing your blood pH will quickly lead to alkaliosis and death and certainly no health benefits, but ii) it doesn’t matter since it is impossible to change your blood pH through diet anyways. There is, in short, no evidence (not even the slightest) for any of the claims made by proponents of the diet, and the dietary recommendations – which are usually related to alkaline pH values at a rate little better than random chance – are often harmful for different reasons. Facts, however, tend to be of minimal importance to promoters of the idea, who often push it as part of some MLM scheme. It is of course common to mention that diet can alter urine pH (which may reduce the impact of kidney stones), something that is unrelated to your blood or the rest of your body.
One ardent promoter of the alkaline diet, is Shelley Penney, who runs the blog Real Water Health. RWH pushes in particular alkaline water, which ostensibly contains “millions of added electrons” to make the water alkaline and improve cell hydration. The blog does contain a list of 17 “Peer Reviewed Articles on Alkaline Water”, but a quick scan shows that these are articles discussing research on acidosis; none of them mention any benefits from actually drinking alkaline water. So it goes.
Penney herself is a retired nurse with interests in “health, peace and abundance”. Apparently she skipped the chemistry classes one would have hoped nurses (or any student with a highschool diploma) should have had. Penney claims, for instance, that “because it is very alkaline, ionized water may dissolve accumulated acid waste and return the body to a balance.” (The notion of “balance” involved is presumably this one.) She also claims that “keeping our body fluid pH in an alkaline state may be the first line of defense in fighting any disease,” which is technically true since an arterial blood pH much lower than 7.35–7.45 would quickly kill you. Of course, ionized water (which has a pH around seawater in any case) will not have the slightest effect on your body fluid pH.
Diagnosis: A disgrace to her profession, currently wasting her life on pushing harmful nonsense. A sad and sordid affair.