From controlling body temperature and flushing out toxins, adequate hydration plays a vital role in our general health and well-being, water is a life essential. However, while dehydration garners significant attention, overhydration, or drinking excessive amounts of water, is a condition that can have serious and sometimes fatal consequences.

Although it may sound bizarre since drinking water is said to be the solution for most health related problems it is important to recognize how much water is considered "too much" or the risks involved with being overhydrated can maintain a healthy balance.

What Is Water Intoxication?

Water intoxication, also termed hyperhydration, water poisoning or water toxemia, develops when an individual drinks much more water than the kidney can excrete. The main function of the kidneys in the human body is the processing and excretion of excess water. However, the human kidneys can process only up to 0.8 to 1.0 liters of water at a time. Drinking an amount that exceeds this may overwhelm the kidneys and put the electrolyte balance out of sync in the human body.

Electrolytes, especially sodium, are essential in maintaining fluid balance within and outside cells. Hyponatremia is the condition when sodium levels fall below 135 mmol/L, resulting from excessive water intake. This causes water to shift into cells, swelling them. In the brain, this can cause severe complications, including coma or even death.

Symptoms of Water Intoxication

The symptoms of water intoxication vary from mild to severe. Early symptoms are often similar to dehydration, which makes self-diagnosis challenging. Common symptoms include:

• Headaches
• Nausea and vomiting
• Muscle cramps or weakness
• Fatigue or drowsiness
• Confusion and disorientation

In more serious cases, water intoxication can cause seizures, loss of consciousness, or swelling in the brain. These complications can be fatal if left untreated.

A notable case occurred in 2007 when a woman participating in a water-drinking contest tragically died after consuming nearly two gallons of water in under two hours. More recently, actress Brooke Shields experienced a grand mal seizure attributed to excessive water consumption.

Causes of Water Intoxication

Water intoxication is rare, but certain scenarios can increase the risk:

1. Sporting Events and Endurance Training

These endurance athletes are prone to water intoxication, especially if they drink large amounts of water without replacing lost electrolytes. Hyponatremia usually happens during long races or marathons as individuals mistake fatigue and muscle cramps for dehydration and continue drinking water in excess.

2. Military Training

Overhydration among military personnel is usually due to severe physical activity in extreme environmental conditions. The total number of hyponatremia cases documented from 2007 through 2022 for the active duty in the United States exceeds 1,600, with a note to this problem on exertion-related overhydration.

3. Mental Health Conditions

Compulsive water drinking, known as psychogenic polydipsia, is linked with some mental illnesses such as schizophrenia and psychosis. People with these conditions tend to drink too much water, causing a hazardous electrolyte imbalance.

4. Drug Abuse

Drugs such as MDMA (ecstasy) raise the body temperature and make people thirsty, and at times, some people tend to drink excess water at events like music festivals. MDMA also leads to urine retention, thus exacerbating the dangers of water intoxication.

How Much Water Is Too Much?

The exact amount of water that causes intoxication varies from one person to another. However, drinking more than 1 liter of water per hour for several hours raises the risk. For healthy individuals, the risk of overhydration is low unless taking part in extreme physical activity or ignoring thirst cues.

Certain medical conditions, such as kidney or liver disorders, can impair the body's ability to process fluids, and even moderate water intake may be harmful. Similarly, certain medications, such as diuretics and antipsychotics, can affect the perception of thirst or fluid regulation.

How Much Water Is Enough?

The widely touted recommendation of eight 8-ounce glasses of water per day has little basis in fact. According to the National Academy of Medicine, a daily total fluid intake is about 15 cups (3.7 liters) for males and 11 cups (2.7 liters) for females, from beverage sources and from food. Usually, about 20 percent of daily hydration comes from foods such as fruits and vegetables.

A better rule of thumb is to listen to your body and drink water based on thirst. Use the color of your urine as an indicator:

• Light yellow urine indicates proper hydration.
• Dark yellow urine may indicate dehydration.

Older adults, whose thirst mechanisms may decline with age, should be proactive about maintaining hydration, especially during illness or hot weather.

Water Intoxication vs. Dehydration

The symptoms of water intoxication—such as headaches, fatigue, and muscle weakness—are similar to those of dehydration. If you are unsure which condition you are experiencing, seek medical attention immediately rather than self-treating with more water.

Preventing Water Intoxication

To avoid the dangers of overhydration:

• Drink water gradually throughout the day rather than consuming large amounts at once.
• Replace lost electrolytes post high-intensity exercise or heavy sweating.
• Consider using sports drinks or salty snacks to help replenish sodium.
• Keep track of fluid consumption during long-duration activities, and do not consume more water than the body is losing in terms of electrolytes.
• If on medications or have specific medical conditions, check with your doctor regarding the safety of drinking water.

For signs of severe water intoxication-including confusion, drowsiness, seizures, and loss of consciousness-customer is advised to seek medical assistance immediately. In the meanwhile, a salty snack would help to temporarily correct low sodium levels.

Hydration is important to health, but overhydration can be a serious risk; the secret is in finding a balance. Drink enough water to satisfy your body, but not so much that it overwhelms your system. Remember, water is life, but moderation keeps it that way.

Hyponatremia (low sodium level in the blood). National Kidney Foundation. 2023.

Water Toxicity. NIH. 2023

Exercise-Associated Hyponatremia: 2017 Update. Front Med (Lausanne). 2017

Update: Exertional Hyponatremia Among Active Component Members of the U.S. Armed Forces, 2007–2022

The concept of self-medication in the case of a trivial ailment such as a headache or a small cut is generally considered responsible self-care. Nevertheless, it becomes a matter of public health concern when the process goes through two particular stages. The first of these stages is the “masking of chronic disease." When one uses over-the-counter (OTC) drugs to cover up symptoms of fatigue, acidity, or thirst, he or she ends up masking the symptoms of underlying chronic diseases, which could be type 2 diabetes or high blood pressure, for instance. By the time these symptoms are diagnosed, the condition may have caused irreparable damage to organs. Another health problem created due to self-medication is antimicrobial resistance, which poses a danger not only to the individual but also to society as a whole.

What are the risks of making a self-diagnosis?

Dr Vimal Pahuja, MD, Associate Director, Internal Medicine & Metabolic Physician, Diabetes & Weight Management Clinic, Dr LH Hiranandani Hospital, Powai, Mumbai, said, “The most serious complications include those that have no immediate effects and do not trigger pain signals. DILI is a growing concern in India and is a consequence of the persistent abuse of painkillers (NSAIDs) or even some of the herbal supplements available in the market. In the same way, ‘kidney compromise’ results from prolonged consumption of analgesics. Looking at things from the viewpoint of the endocrine system, the frequent consumption of over-the-counter steroids, which are also included in some ‘miracle’ skin creams and supplements, can affect hormones and lead to the development of secondary diabetes.”

Does it help to ‘Google’ symptoms?

Internet searches usually generate confirmation bias, where patients only seek answers that align with what they want to hear. Health-related social media sites and influencers tend to oversimplify medical issues by encouraging bio-hacking. This results in unsafe practices, such as people prescribing themselves advanced metabolic and hormonal treatments without being aware of the contraindications or the need for clinical testing.

Dr Kirti Sabnis, Infectious Diseases Specialist, Fortis Hospital, Mulund & Kalyan, Mumbai, said, “With the growing emphasis on early and accessible diagnosis, more individuals are becoming proactive about understanding their symptoms and lab reports. This has led to a noticeable rise in what clinicians often refer to as ‘Google diagnosis,' where patients arrive with self-researched conclusions based on online information or AI-enabled report analyses.”

Why is accurate diagnosis important?

The expert went on to say that interpreting symptoms and investigations is rarely straightforward. Fever, for instance, is merely a symptom and can stem from a wide range of causes, from infections to non-infectious conditions such as thyroid disorders. While digital tools and AI platforms can analyse reports and suggest possible conditions, they typically rely on common algorithm-based differentials. In some cases, this may lead to alarming or misleading possibilities such as tuberculosis or even cancer, when the underlying issue could be far less serious.

Accurate diagnosis requires more than data interpretation; it demands clinical expertise, physical examination, and years of medical experience to connect symptoms, history, and test results. Over-reliance on online searches can sometimes lead to unnecessary anxiety, delayed diagnosis, or even self-medication, which may complicate the condition further.

The importance of taking time to explain the reasoning behind prescribed medication is essential, especially when informing a patient that an antibiotic cannot cure their flu.

When it comes to heatwave-like conditions, most people worry about the risk of dehydration and sunburn. But it turns out that the scorching heat could also take a toll on your skin—according to experts, extreme summer heat can increase the risk of skin infections. Heatwave-related skin infections can be triggered by high humidity, sweat, and bacteria trapped on the skin. Some of the other issues associated with heatwaves are folliculitis, heat rash, impetigo, and yeast infections.

What makes heatwaves conducive to increased skin infections?

Talking about it, Dr. Gitika Sanodia, Consultant Dermatologist at Dr. L H Hiranandani Hospital, Powai, answered some FAQs associated with heatwaves and consequent skin infections.

The expert said that when there is an increase in temperature, there is an increase in sweating, dehydration, and breakdown of the skin barrier, which creates an environment suitable for infection development, mainly in children, the elderly, diabetics, and obese individuals. Heatwaves also cause friction, which leads to skin infections. As a result, rashes can develop and cause a great deal of discomfort.

Can sweating too much increase the risk of infection?

During summer, because of the heat, one ends up sweating far more than normal, and if you are someone who often wears tight clothes, it can be even worse. Overproduction of sweat keeps the skin constantly wet. Such an environment provides perfect conditions for bacteria and fungi to multiply. Being trapped under breast tissue, between the thighs, and in folds around the neck and armpits causes conditions such as yeast infections or folliculitis.

What are the infections associated with heat?

During a heatwave, some skin infections are likely to develop silently. These include:

1. Fungal infections such as tinea and candidiasis
2. Bacterial infections such as folliculitis and boils
3. Heat rash resulting in miliaria

Who is at risk of skin infections during a heatwave?

At a time when temperatures are rising constantly, heatwave-related infections are likely to affect certain groups more than others. These high-risk groups are:

1. Children
2. The elderly
3. Overweight people
4. People with diabetes
5. People who wear tight or non-porous clothes during summer

How to prevent heatwave-related skin infections?

In order to prevent heatwave-related skin infections, you need not make major changes to your lifestyle or wardrobe. Rather, some simple, cost-free methods can also do the trick. Here are some expert-recommended tips to beat the heat:

1. Keep your skin dry, especially skin folds
2. Wear loose-fitting cotton clothes
3. Bathe after sweating
4. Do not share towels or undergarments with anyone
5. Use an antifungal dusting powder on susceptible areas
6. Keep yourself hydrated

With the increasing number of heatwaves, these problems have become more than just seasonal. However, with the right choices in terms of diet, lifestyle, and clothing, you may be able to avoid skin infections during a heatwave.

Persistent back pain in young adults is often dismissed as poor posture, long hours at a desk, or muscle strain. But doctors are warning that in some cases, it could be a sign of ankylosing spondylitis — a chronic inflammatory autoimmune disease that affects the spine and can silently progress for years before diagnosis.

In India, 16.5 lakh people suffer from the condition, with an average diagnostic gap of nearly seven years from the time symptoms first appear. During that window, the disease continues to silently progress, and the burden is far from small.

“Ankylosing Spondylitis is one of the most underdiagnosed conditions we encounter in clinical practice, and the consequences of that delay are real,” Dr. Arvind Mehra, Senior Director and HOD - Orthopaedics at Paras Health Gurugram, told HealthandMe.

Moreover, “It takes several years of pain and stiffness before people seek treatment, and by then, the diagnosis comes too late, and there has already been damage to the spine,” added Dr. Ashish Tomar, Director - Orthopaedics & Minimally Invasive Spine Surgery at Sarvodaya Hospital, Faridabad.

What Is Ankylosing Spondylitis?

Ankylosing spondylitis, also known as axial spondyloarthritis, is a type of arthritis that primarily targets the spine but can also affect other joints. The term “ankylosing” means stiff or rigid, “spondyl” refers to the spine, and “itis” indicates inflammation.

The inflammatory disease causes some of the bones in the spine to fuse over time. This fusing not only makes the spine less flexible but can also cause issues while breathing.

Ankylosing spondylitis leads to inflammation in the spine and large joints, causing stiffness and pain. It can also impact the joint between the spine and the hipbone, potentially resulting in additional symptoms such as digestive issues, rashes, and weight loss.

Not Your Typical Back Pain

What makes ankylosing spondylitis difficult to spot is that it often feels like ordinary back pain — but there are warning signs that set it apart.

According to experts, ankylosing spondylitis-related pain typically:

• Causes maximum stiffness early in the morning
• Gets worse after long periods of rest
• Improves with physical activity or exercise
• Persists for months rather than days or weeks
• Often begins in young adults, especially in their 20s and 30s

This pattern is very different from mechanical back pain, which usually worsens with movement and improves with rest.

Pain Beyond The Spine

Dr. Tomar told HealthandMe that ankylosing spondylitis is not simply a musculoskeletal problem — it is an autoimmune disease, where the body’s immune system mistakenly attacks healthy tissues, particularly around the spine and joints.

“Ankylosing spondylitis is not just another musculoskeletal disease. It requires the attention given to autoimmune disorders because it may affect the chest, hips, shoulders, and even the eyes, while also causing severe posture problems in advanced stages,” he said.

Beyond the spine, the disease may affect:

• Chest joints
• Hip joints
• Shoulders
• Eyes
• Posture, causing severe problems in the advanced stages

Who Is At Most Risk? How To Treat?

Young adults, typically in their twenties, are more likely to experience this condition because people often overlook its existence or mistakenly identify it as something else.

The combination of early diagnosis, structured physiotherapy, and suitable medications allows for effective disease progression control.

“When a young adult presents with inflammatory back pain, especially in the gluteal area, that persists beyond three months, the reflex should not be to prescribe a painkiller and wait. It should be investigated further. That shift in approach can make an extraordinary difference to someone’s long-term quality of life,” Dr. Tomar said.

Common treatments for ankylosing spondylitis include:

• Regular physical activity can reduce stiffness and prevent worsening of ankylosing spondylitis
• Over-the-counter painkillers for pain and inflammation
• Biologic DMARDs to reduce inflammation and pain, potentially halting disease progression.
• Corticosteroids are prescription anti-inflammatory medications
• Surgery is rarely suggested for severe symptoms unresponsive to other treatments.