Frequently Asked Questions

What is alkaline water?

A type of water that undergoes an ionization process that separates the alkaline and acidic fractions by increasing the pH and raising it to more than seven units.

The pH of water is determined by the minerals that are in suspension, and can be defined as the measure of acidity of a medium.

Seven (7) is the pH equilibrium point. Below this level it is considered an acidic medium, and above 7 a basic or alkaline medium.

It should be remembered that the natural water of the planet is found at acidity levels between 6.5 and 9 pH units. Levels higher than 9 are usually toxic.

It is important to clarify that if the degree of alkalinization of the water is low it does not have to cause any problem to the human being. However, excessively alkaline water can cause stomach damage.

According to the Healthline blog, one of the negative side effects of drinking alkaline water includes reducing the stomach's natural acidity.

How is alkaline water obtained?

Alkaline water can be obtained in different ways. One of them is to buy it bottled in self-service or health food stores.

However, in 2019 the Procuraduría Federal del Consumidor conducted a quality study of 22 brands of alkaline water, in which it concluded that 19 of those 22 products offered unproven benefits to the consumer on their labels.

It can also be obtained through water purifiers, whose filter system retains sediments and bacteria, providing water with high levels of minerals such as sodium, calcium, magnesium and potassium.

Another way to obtain it is at home. One option is to alkalinize the water by boiling it for a period of 5 minutes. This will increase its pH to 8.4, which is already considered alkaline water. It can also be obtained by adding half a tablespoon of baking soda to a glass of water. The pH will increase to 7.9.

In both cases, it is important to use distilled water, because tap water or bottled water may have other additives.

What is the pH of water?

After talking so much about pH, you may be wondering what it is. The pH is a test that is performed to determine the quality of water, and indicates the acidity or alkalinity of the water. Normally, these measurements are run on a scale of 0 to 14, with 7.0 being neutral.

From this point on, and above 8 points, they are considered alkaline. Below, they are considered acidic, always bearing in mind that in these measurements each point represents a tenfold change in acidity. That is to say, a pH 6 would be 10 times more acid than pH 7.

To give an example, we would say that lemon juice, which is an acidic liquid, has a pH of 2.5, while coffee is at 5. On the other side of the scale, with a pH of 12, we would have limestone water, which is when rainwater falls on an area with porous rock and penetrates the soil.

As it percolates through the rock it picks up and dissolves particles and minerals such as calcium and magnesium gaining hardness and alkalinity.

At this point you are probably wondering what is the recommended pH of water? According to the experts - as established, for example, in the European Union regulations - the pH of drinking water should be between 6.5 and 9.5 units.

How to measure the pH of water?

Both manual and automatic pH meters are available. They are very simple and easy to use. And although the automatic ones are more expensive, a manual meter will be equally effective in regulating the water.

Automatic pH meters
This is a kit that includes a measuring cylinder, two tubes and reagents (substances or compounds to provoke a chemical reaction). All you have to do is take a sample of water and, after following the instructions on the package, check the color of the water dyed with the reagent. Once the color has been obtained, you should read the manufacturer's instructions to find out the degree of alkalinity.

What benefits are attributed to alkaline water?
Many benefits are attributed to alkaline water. However, many studies are still lacking. Among the benefits that drinking alkaline water is said to have are:

That it helps detoxify the body. Drinking alkaline water daily can neutralize acidity and remove acidic waste products from cells and tissues.

That it is antioxidant. Alkaline water is said to act as an antioxidant, eliminating and neutralizing harmful free radicals that damage the skin and are responsible for aging. This occurs because it supposedly has the ability to give up electrons and can effectively neutralize and block free radical damage in the body.

It helps to balance the pH of the body. Alkaline water helps balance the body's pH, which tends to be acidic due to a high-acid diet, stress and exposure to environmental toxins such as smog.

It improves the immune system. According to alkaline water enthusiasts, it keeps the immune system in better shape, which, as you know, is in charge of preparing the body to fight disease.

It improves hydration. In case of exercise-induced dehydration, the idea that electrolyzed alkaline water reduces blood viscosity and vascular resistance is supported.

It is an adjuvant in skin care. In addition to the health benefits attributed to drinking it, bathing with alkaline water is also said to improve skin-related problems.

Lowers blood glucose levels. Studies in some Asian countries have found that drinking alkaline water balances the functioning of the pancreas, thus helping to control blood glucose levels.

It helps in disorders of the gastrointestinal tract. Since alkaline water has a higher pH, its natural ability to neutralize acids in the stomach makes it a good choice for treating disorders of the gastrointestinal tract, such as hyperacidity, diarrhea, etc. It is said that in cases of laryngopharyngeal and gastroesophageal reflux diseases, alkaline water has proven to be efficient in neutralizing acid in the stomach.

It improves the immune system. According to alkaline water enthusiasts, it keeps the immune system in better condition, which, as you know, is in charge of preparing the body to fight diseases.

It improves hydration. In case of exercise-induced dehydration, the idea that electrolyzed alkaline water reduces blood viscosity and vascular resistance is supported.

It is an adjuvant in skin care. In addition to the health benefits attributed to drinking it, bathing with alkaline water is also said to improve skin-related problems.

Lowers blood glucose levels. Studies in some Asian countries have found that drinking alkaline water balances the functioning of the pancreas, thus helping to control blood glucose levels.

It helps in disorders of the gastrointestinal tract. Since alkaline water has a higher pH, its natural ability to neutralize acids in the stomach makes it a good choice for treating disorders of the gastrointestinal tract, such as hyperacidity, diarrhea, etc. It is said that in cases of laryngopharyngeal and gastroesophageal reflux diseases, alkaline water has proven to be efficient in neutralizing acid in the stomach.

It prevents osteoporosis. The human body strives to be slightly alkaline. The ideal pH level is 7.3 to 7.45. Alkaline water, which is obtained through purifiers, reaches these values and can even exceed them. These levels are very favorable for the human body. Consuming alkaline water prevents the body from extracting calcium from the bones to bring it to an alkaline state. This would help prevent osteoporosis.

Is it good to drink alkaline water?

Some people claim that a more alkaline diet - including drinking alkaline water - can help reduce the body's acidity, and thus lead to better health and fitness.

And while the term "alkaline" has become a buzzword in health circles, the idea that everyone needs to drink alkaline water is a bit much.

Alkaline water is a controversial topic. Many health professionals claim that there is not enough research to back up the many health claims made by users and marketers.

Differences in research results may be related to the types of studies with alkaline water.

According to the Mayo Clinic, tap water is better for most people and they contend that there is no scientific evidence to fully verify the claims made by alkaline water proponents.

However, there are some studies that suggest that alkaline water may be helpful for certain conditions.

For example:

A 2012 Study found that drinking naturally carbonated, alkaline well water with a pH of 8.8 can help deactivate pepsin, the main enzyme that causes acid reflux.

Another study suggested that drinking ionized alkaline water may have benefits for people with high blood pressure, diabetes and high cholesterol.

A more recent study involving 100 people found a significant difference in blood viscosity after consuming high pH water compared to normal water after an intense workout. Viscosity is the direct measure of how efficiently blood flows through vessels.

Those who consumed high pH water reduced viscosity by 6.3% compared to 3.36% for standard purified drinking water. This means that blood flows more efficiently with alkaline water. This can increase oxygen supply to the entire body.

However, beyond these isolated studies, more research is needed regarding alkaline water. In particular, research is needed to verify whether alkaline water offers all the benefits that its promoters claim.

Despite the lack of proven scientific research, alkaline water advocates still believe in its health benefits.

So, when asked whether it is worth buying and consuming alkaline water, the answer is that it is better to hydrate with purified water.

There is a wide variety of water purifiers on the market, both for offices and for the home, which allow purifying water from the public network to obtain a liquid free of bacteria and viruses, with the pH that our body needs.

There is a 2012 study that states that while an alkaline diet (including water) can reduce morbidity and mortality from chronic diseases, regular consumption of fruits and vegetables and eating a generally healthy diet is necessary. Alkaline water is not miraculous and does not replace the benefits of a proper diet and a healthy lifestyle.

It is also necessary to take into account that every organism has a unique pH, and our bodies naturally do a fantastic job of keeping the pH of the blood within the necessary levels. Therefore, it is important to be cautious.

Finally, while it is true that there is no contraindication regarding the consumption of this type of water, it is important to keep in mind how much alkaline water to drink per day, since it is not advisable to overdo it, as the body will always require natural liquid; that is, neither too alkaline nor too acidic either.

More than alkaline water, we need to improve our lifestyle.
As you have seen, there is not enough research to support the benefits attributed to alkaline water.

It should be understood that the benefits could only be confirmed by combining it with a healthy diet (rich in fruits, vegetables, legumes and whole grains), an active lifestyle (30 minutes of exercise daily), healthy sleep and rest habits, as well as avoiding alcohol and tobacco consumption.

Knowing the above, the question that arises is: when leading a healthy lifestyle, in terms of food, hydration, physical activity and habits in general, is it necessary to drink alkaline water? What do you think?