You can't throw the proverbial rock without hitting yet another obnoxious ad of some sort for alkaline water, with claims to cure all that ails ya', from genital warts to fear of flying.
It's said to restore pH balance by "reducing acidity levels in the blood" and "reducing water cluster size, which allows water to penetrate cells more easily," along with the fan-favorite, "eliminates mucus build-up on colon walls, thus improving the body's ability to absorb important nutrients."
The claims go on and on, each a bit more outrageous than the last.
As the name implies, alkaline water is water that's had its alkalinity increased above that of typical water. But beyond the goofy pseudo-science claims, is it just a scam like so many others? Surprisingly, the answer is no. Before you think the Brink-man has lost his mind, let me explain.
Is Your Blood Chemistry PHucked Up?
Most sellers and proponents of alkaline water claim their water increases the PH of the blood (make the blood "less acidic" is the usual claim), but as anyone who's taken Human Biology 101 knows, blood PH is very tightly regulated. Even a small change in blood PH up or down is bad mojo and likely to land you in the ER.
At that point, the skeptic will understandably ignore any further claims of benefit and assume it's a scam. That, however, may be a case of throwing the baby out with the bathwater. (Hopefully the following doesn't end up in some alkaline-water marketing page somewhere.)
The body maintains blood and tissue PH by using the buffering agents it obtains from the diet, as well as what's stored in various tissues such as bone and muscles.
Modern Western diets, however, are high in acidic foods such as animal proteins and cereal grains and often lack adequate buffering agents like fruits and vegetables, which tends to increase the acidic load on the body and create low level, diet-induced, metabolic acidosis. This in turn contributes to the decline in muscle and bone mass found in aging adults.
The acid/alkaline issue doesn't just pertain to health and anti-aging issues, though. Athletes also tend to eat more protein than normal non-exercising folks, which also can lead to low-level chronic metabolic acidosis over time.
This can directly impact performance, and studies going back decades have found that the use of a buffering agent like sodium bicarbonate (baking soda) improves short, high intensity exercise that relies primarily on the ATP/PCR system, such as the number of reps athletes could perform during resistance training.
Too bad it and other buffering agents have been all but ignored by too many in the cross training (e.g. CrossFit) and physique athlete communities, but their use, although effective, doesn't replace fruits and vegetables - you know, a "balanced diet."
The take-home message is that old folks and athletes should get their protein from a variety of sources, as well as increase their consumption of fruits and vegetables while reducing their intake of cereal grain-based foods.
What Do the Studies Say?
While there haven't been many studies on alkaline water, one involving 100 people found that alkaline water led to a statistically significant difference in whole blood viscosity compared to regular water post-workout in an exercise-induced dehydration state.
Simply put, viscosity is considered a measurement of how efficiently blood flows through the vessels, and the study suggests that alkaline water may lead to more rapid hydration post workout. Another small, preliminary study with alkaline water found three to six months of use might benefit those with diabetes, elevated blood pressure, and high cholesterol. As they say, more research is needed.
Don't Do Baking Soda Enemas. Please
While most people have heard of metabolic acidosis, one can experience metabolic alkalosis, so ingesting highly purified high-PH sources such as alkaline water, baking soda, etc., vs. getting them via balanced nutrition, can potentially be problematic.
In Western societies, chronic sub-clinical metabolic acidosis is by far the more common issue, but you could conceivably find yourself in metabolic alkalosis, which includes symptoms such as nausea, muscle twitching, confusion, and tingling in the extremities or face.
Again, those who eat a balanced diet and use some bicarb a few days a week or drink a few bottles of alkaline water are likely good to go, but there's always gonna be that idiot who drinks three gallons a day of alkaline water in addition to giving themselves a sodium bicarbonate enema.
So It Doesn't Completely Suck. Now What?
The reality is, alkaline water may indeed have potential benefits, but a focus on eating more foods that supply the needed buffering agents (fruits and vegetables), or using super-cheap bicarbonates, are healthier and less expensive methods of achieving it.
However, if people want to down a bottle of overpriced alkaline water once in a while, I won't make fun of them. Okay, maybe a little...
- Frassetto L, et al. Potassium bicarbonate reduces urinary nitrogen excretion in postmenopausal women. J Clin Endocrinol Metab. 1997 Jan;82(1):254-9.
- Frassetto L, et al., Diet, evolution and aging-the pathophysiologic effects of the post-agricultural inversion of the potassium-to-sodium and base-to-chloride ratios in the human diet. Eur J Nutr. 2001 Oct;40(5):200-13.
- The effect of chronic progressive-dose sodium bicarbonate ingestion on CrossFit-like performance: A double-blind, randomized cross-over trial. PLoS One. 2018; 13(5).
- Magro M1, et al. Alkaline Water and Longevity: A Murine Study. Evid Based Complement Alternat Med. 2016;2016:3084126.
- Weidman J, et al. Effect of electrolyzed high-pH alkaline water on blood viscosity in healthy adults. J Int Soc Sports Nutr. 2016 Nov 28;13:45.
- Wang Yu-lian. Preliminary observation on changes of blood pressure, blood sugar and blood lipids after using alkaline ionized drinking water. Shanghai Journal of Preventive Medicine. 2001-12.
- Del Coso J, et al. Restoration of blood pH between repeated bouts of high-intensity exercise: effects of various active-recovery protocols. Eur J Appl Physiol. 2010. February;108(3):523-32.
- Siegler JC, Marshall PW, Bishop D, Shaw G, Green S. Mechanistic insights into the efficacy of sodium bicarbonate supplementation to improve athletic performance. Sports Med Open. 2016. December;2(1):41.
- Abramowitz MK, Hostetter TH, Melamed ML. Lower serum bicarbonate and a higher anion gap are associated with lower cardiorespiratory fitness in young adults. Kidney Int. 2012. May; 81(10):1033-42.
- Lancha Junior AH, Painelli Vde S, Saunders B, Artioli GG. Nutritional strategies to modulate intracellular and extracellular buffering capacity during high-intensity exercise. Sports Med. 2015. November;45 (Suppl 1):S71-81.
- Regulation of pH in human skeletal muscle: adaptations to physical activity. Acta Physiol (Oxf). 2008. May;193(1):17-24.
- Carr BM, Webster MJ, Boyd JC, Hudson GM, Scheett TP. Sodium bicarbonate supplementation improves hypertrophy-type resistance exercise performance. Eur J Appl Physiol. 2013. March;113(3):743-52.
- Driller MW, Gregory JR, Williams AD, Fell JW. The effects of chronic sodium bicarbonate ingestion and interval training in highly trained rowers. Int J Sport Nutr Exerc Metab. 2013. February;23(1):40-7.
- Percival ME, Martin BJ, Gillen JB, Skelly LE, MacInnis MJ, Green AE, et al. Sodium bicarbonate ingestion augments the increase in PGC-1α mRNA expression during recovery from intense interval exercise in human skeletal muscle. J Appl Physiol (1985). 2015. December 1;119(11):1303-12.
- Hollidge-Horvat MG, Parolin ML, Wong D, Jones NL, Heigenhauser GJ. Effect of induced metabolic alkalosis on human skeletal muscle metabolism during exercise. Am J Physiol Endocrinol Metab. 2000. February;278(2):E316-29.
- Tobias G, Benatti FB, de Salles Painelli V, Roschel H, Gualano B, Sale C, et al. Additive effects of beta-alanine and sodium bicarbonate on upper-body intermittent performance. Amino Acids. 2013. August;45(2):309-17.
- Price M, Moss P, Rance S. Effects of sodium bicarbonate ingestion on prolonged intermittent exercise. Med Sci Sports Exerc. 2003. August;35(8):1303-8.
- Krustrup P, Ermidis G, Mohr M. Sodium bicarbonate intake improves high-intensity intermittent exercise performance in trained young men. J Int Soc Sports Nutr. 2015. June 4;12:25.
- Duncan MJ, Weldon A, Price MJ. The effect of sodium bicarbonate ingestion on back squat and bench press exercise to failure. J Strength Cond Res. 2014. May;28(5):1358-66.
- Peart DJ, Siegler JC, Vince RV. Practical recommendations for coaches and athletes: a meta-analysis of sodium bicarbonate use for athletic performance. J Strength Cond Res. 2012. July;26(7):1975-83.
- Saunders B, Sale C, Harris RC, Sunderland C. Sodium bicarbonate and high-intensity-cycling capacity: variability in responses. Int J Sports Physiol Perform. 2014. July;9(4):627-32.
- Mueller SM, Gehrig SM, Frese S, Wagner CA, Boutellier U, Toigo M. Multiday acute sodium bicarbonate intake improves endurance capacity and reduces acidosis in men. J Int Soc Sports Nutr. 2013. March 26;10(1):16.
- Sale C, Saunders B, Hudson S, Wise JA, Harris RC, Sunderland CD. Effect of β-alanine plus sodium bicarbonate on high-intensity cycling capacity. Med Sci Sports Exerc. 2011. October;43(10):1972-8.
- Miller P, Robinson AL, Sparks SA, Bridge CA, Bentley DJ, McNaughton LR. The effects of novel ingestion of sodium bicarbonate on repeated sprint ability. J Strength Cond Res. 2016. February;30(2):561-8.