Hydrogen Water Negative Side Effects: What to Know

Hydrogen water, known for its potential antioxidant and anti-inflammatory benefits, has gained popularity as a health supplement. While generally considered safe, it's essential to be aware of mild gastrointestinal issues that have been reported, such as loose stools, increased bowel movements, bloating, and occasional headaches. However, these side effects are very uncommon and typically short-lived. The FDA has given hydrogen gas, as used in hydrogen water, GRAS status (Generally Recognized as Safe), reinforcing its safety profile. Overall, hydrogen water is largely regarded as safe, with the vast majority of users experiencing no adverse effects, making it a viable option for many looking to improve their wellness.

Reported Hydrogen Water Side Effects

Hydrogen water is generally seen as safe, with many studies highlighting its health benefits. However, it's crucial to acknowledge any possible side effects. Although rare and mild, some people have reported adverse reactions after consuming hydrogen water.

Clinical trials have shown that the most common side effect is loose stool or diarrhoea, affecting about 0.2% of participants. This was the only adverse event reported by more than one person, with four individuals experiencing these symptoms.

Loose Stool and Diarrhoea

Loose stool and diarrhoea are the most common side effects of hydrogen water, though they affect only a small percentage of users. These digestive issues are usually mild and temporary, resolving without medical intervention. If you experience persistent or severe diarrhoea after drinking hydrogen water, seek medical advice to rule out any underlying conditions.

Increased Bowel Movements

Some people have noticed an increase in bowel movements after regular hydrogen water consumption. This could be due to the water's potential to enhance gut health and digestion efficiency. While an increase in bowel movements is not typically a cause for concern, it's important to monitor any changes and stay hydrated.

Heartburn

Heartburn was observed in a clinical trial involving hydrogen water. This side effect might be more common in those with gastroesophageal reflux disease (GERD) or a history of heartburn. If you experience persistent or severe heartburn after drinking hydrogen water, discontinue use and consult your doctor.

Bloating

Some individuals have reported feeling bloated after drinking hydrogen water, though this is rare. Bloating might be more likely when consuming large amounts or when first introducing hydrogen water into your diet. To reduce the risk of bloating, start with small doses and gradually increase your intake over time.

Headache

A few individuals have reported headaches, especially during the initial stages of hydrogen water consumption. These headaches are usually mild and short-lived. If hydrogen water consistently triggers headaches, it may be wise to limit your intake or consult a healthcare professional to identify any underlying conditions.

Despite these reported side effects, hydrogen water's safety profile remains high. No long-term damage, toxicity, or severe adverse reactions have been identified. As research advances, larger trials will further establish hydrogen water's safety and efficacy. They will also help identify any potential contraindications or interactions with medications or specific health conditions.

Safety of Molecular Hydrogen

The safety of hydrogen water is a topic of interest, considering both our body's natural production and external supplementation. Molecular hydrogen has been studied for its potential benefits, showing it can act as a selective antioxidant. It has been found to reduce oxidative stress and inflammation.

Endogenous Hydrogen Production

Our bodies naturally produce hydrogen gas through metabolic processes, like gut fermentation. This hydrogen is vital for our cellular health and maintaining redox balance. Research by Ohsawa et al. (2007) found that molecular hydrogen acts as a therapeutic antioxidant. It selectively reduces harmful oxygen radicals.

High Safety Profile of Exogenous Supplementation

Exogenous supplementation of hydrogen water has shown a high safety profile in studies. A four-week study with 26 healthy individuals found no decrease in oxidative stress markers from drinking 20 ounces of hydrogen-rich water daily. This highlights the need for more research in the health industry.

However, an eight-week study showed hydrogen water consumption decreased hydroperoxide levels after radiation treatment. This suggests a positive effect on managing oxidative stress. Additionally, it was found to reduce "bad" LDL and total cholesterol while increasing "good" HDL cholesterol in those with metabolic syndrome. This indicates a potential positive impact on heart health.

These studies reveal the diverse benefits of molecular hydrogen. Its safety profile appears promising, but more research is crucial. We need to fully understand its long-term effects and any potential risks associated with regular consumption.

Contraindications of Hydrogen Water

Current research indicates no known contraindications or drug interactions with hydrogen water. Molecular hydrogen has been thoroughly studied, revealing a high safety profile. It is even safe at concentrations far exceeding therapeutic levels. The FDA has granted molecular hydrogen GRAS status, affirming its safety.

Notice of Hydrogen Gas' FDA GRAS (Generally Recognised as Safe) Approval for its use as an ingredient in drinking water (credit: Food and Drug Administration).

Many clinical trials have shown hydrogen water to be safe. A 24-week study with 60 participants found no adverse effects. Another study with 20 participants reported increased antioxidant capacity and reduced oxidative stress without side effects. A six-month study on older adults consuming hydrogen-rich water also showed positive results in anti-aging markers, with no side effects.

Hydrogen gas has been used for hundreds of years, showing no toxic side effects even at high levels.

Minor side effects like loose stool, diarrhea, heartburn, bloating, increased bowel movement frequency, and headaches have been reported. These instances are rare and often diminish with continued use. It's crucial to note that these side effects were experienced by a very small percentage of participants (0.2%) in clinical trials.

Animal studies also support the safety of molecular hydrogen. A large animal study found normal brain and major organ function after hydrogen inhalation, with no significant difference in blood count. Several studies have shown hydrogen water's benefits for diabetes and cardiovascular conditions, without any reported warnings.

Despite molecular hydrogen's strong safety profile, more research is needed. We must determine if there are specific populations or medications that may have contraindications with hydrogen water. Currently, no contraindications have been identified when molecular hydrogen is used as directed in research settings.

What is Hydrogen Water?

Hydrogen water has become popular for its potential health benefits. It's regular water infused with molecular hydrogen gas (H2). This gas is tasteless, odorless, and colorless. It's thought to have antioxidant properties, offering health advantages when consumed.

Composition of Hydrogen Water

Hydrogen water's composition is key. Regular water (H2O) already has two hydrogen atoms and one oxygen atom. Hydrogen water adds more molecular hydrogen, making it more accessible to cells and acting as an antioxidant. This extra hydrogen creates a unique structure in hydrogen water, differentiating it from regular water.

Molecular Hydrogen in Water

Molecular hydrogen (H2) is what makes hydrogen water special. When dissolved in water, it can penetrate cell membranes and enter mitochondria. This allows it to neutralize harmful reactive oxygen species (ROS) and protect cells from oxidative stress. The molecular hydrogen in water is believed to be responsible for its potential health benefits.

While regular water contains hydrogen, hydrogenated water's additional molecular hydrogen is more bioavailable. This makes it more effective in providing health benefits. As research on hydrogen water's advantages continues, it's vital to consult healthcare professionals and rely on scientific evidence before adding it to your diet.

Potential Benefits of Hydrogen Water

Hydrogen water has become increasingly popular for its potential health benefits. Research is ongoing, yet studies suggest it may offer therapeutic effects and health advantages. We delve into the potential benefits of hydrogen water based on scientific evidence.

One of the most promising benefits is its ability to reduce oxidative stress and inflammation. A study involving 38 healthy adults showed that drinking hydrogen water for 4 weeks increased antioxidant capacity. This was especially true for those over 30, with a significant difference noted (P=0.028). Moreover, DNA damage markers due to oxidative stress decreased significantly in both groups, with the hydrogen water group showing a greater reduction.

Hydrogen water may also have therapeutic effects on various health conditions. For instance, a 2017 trial on colon cancer patients undergoing chemotherapy found it protected against liver damage. Additionally, a 2012 pilot study on rheumatoid arthritis patients showed it reduced oxidative stress markers and improved symptoms.

Hydrogen water may also improve mood, anxiety, and quality of life, as a 2017 study showed. A trial with female juvenile soccer players found it enhanced immune markers and gut flora diversity and abundance.

While the potential hydrogen water therapeutic effects are promising, it is important to note that more research is needed to fully understand the extent of its health advantages and long-term safety.

Despite the need for more research, hydrogen water is recognized as safe by the US FDA when consumed within recommended doses. To maximize benefits, it's advised to drink it within one hour of opening to minimize hydrogen loss.

Final Thoughts on Hydrogen Water Negative Side Effects

Research indicates hydrogen water is safe, with the US FDA deeming it Generally Recognized as Safe (GRAS) for human use. Studies show hydrogen is safe for various groups, including pregnant women and children. It does not show toxic effects, even at high concentrations. This safety allows for exploring its therapeutic benefits without major concerns.

Yet, it's crucial to acknowledge some minor and rare side effects of hydrogen water. Gastrointestinal issues like loose stool, diarrhoea, and bloating are common. In clinical trials, about 0.2% of participants experienced these symptoms. Rarely, hydrogen inhalation can cause ear discomfort, and there's a reported case of hypoglycemia in a diabetic patient.

To reduce risks, start with small amounts and watch for body reactions. Choose trusted brands and consult healthcare professionals, especially if you have health conditions or take medications. Regularly check your well-being and adjust your intake if needed. Further research is necessary to fully understand hydrogen water's benefits and optimal use.

In summary, hydrogen water is generally safe and may offer health benefits. However, being aware of potential side effects and taking precautions is essential. This knowledge helps consumers make informed choices about adding hydrogen water to their health routines.