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

After a short spell of clearer skies, Delhi’s air quality worsened again on Thursday, with the city’s overall AQI climbing to 264, squarely in the “poor” category, according to the Central Pollution Control Board (CPCB). Unfortunately, forecasts suggest that the situation will deteriorate further to the “very poor” zone in the coming days.

A dense layer of smog has settled over much of the capital, and pollution-related illnesses are being reported every day. Many residents have also complained of migraine attacks over the past week, prompting the question: can pollution trigger migraines?

To understand this better, we spoke to Dr. Khusboo Hatekar, Assistant Professor, Department of Neurology, DPU Super Specialty Hospital, Pimpri Pune.

What’s Behind Delhi’s Rising Air Pollution?

Meteorologists attribute the worsening pollution to a western disturbance that has slowed wind speed and created atmospheric stagnation, ideal conditions for pollutants to accumulate.

This stagnant air has intensified health risks, especially for vulnerable groups such as children, senior citizens, and people with chronic respiratory conditions. Doctors have urged Delhiites to reduce outdoor exposure, particularly during early morning and late evening hours when pollution levels are at their peak.

What Is a Migraine?

A migraine is a neurological condition marked by severe, throbbing pain, usually on one side of the head. It often comes with nausea, vomiting, and extreme sensitivity to light or sound. Attacks can last anywhere from a few hours to several days, often disrupting daily routines.

In some individuals, warning signs known as auras appear before or during a migraine episode. These may include visual disturbances like flashes of light or blind spots, as well as tingling sensations on one side of the face or body and even temporary difficulty speaking, as described by the Cleveland Clinic.

Can Air Pollution Trigger Migraines?

Air pollution is now increasingly recognised as a powerful environmental trigger for migraine — a complex neurological disorder that causes recurring, often debilitating headaches. The connection lies in how pollutants interact with the brain’s blood vessels and nerves, setting off inflammatory reactions that heighten pain sensitivity.

The Neurological Link

Under normal circumstances, this system remains stable. But when it becomes overactive, it releases neuropeptides such as substance P and calcitonin gene-related peptide (CGRP). These chemicals cause inflammation and dilation of blood vessels, leading to the throbbing pain typical of migraines.

How Polluted Air Affects the Brain?

Common air pollutants like fine particulate matter (PM2.5), nitrogen dioxide (NO₂), ozone (O₃), carbon monoxide (CO), and sulphur dioxide (SO₂) can activate this same system. When inhaled, these pollutants enter the body through the lungs or nasal passages and create oxidative stress and inflammation in the nervous system.

Dr Hatekar said, “This process triggers immune cells in the brain known as microglia, which then release pro-inflammatory molecules that heighten nerve sensitivity and increase the likelihood of migraine attacks.”

Beyond the Brain: Blood Flow and Hormones

Air pollution can also disturb normal cerebral blood flow and alter levels of neurotransmitters like serotonin, a key regulator of mood and pain. At the same time, exposure to polluted air stimulates the sympathetic nervous system, the body’s stress response network, which further interacts with the trigeminal system to intensify symptoms.

Research has shown a clear association between spikes in air pollution and higher numbers of migraine-related emergency room visits, underlining how environmental conditions can influence neurological health.

The Role of Weather and Genetic Sensitivity

Weather changes often accompany high pollution days, and together, they can worsen the risk of migraines. Fluctuations in barometric pressure, temperature, and humidity, combined with exposure to pollutants, can make certain individuals more prone to attacks.

Some people may also be genetically predisposed to this heightened sensitivity, which explains why not everyone responds to pollution in the same way.

The Broader Health Impact

Dr Hatekar suggested, for people who frequently suffer from migraines, exposure to polluted air can lead to more frequent and intense episodes. This not only reduces their quality of life but also increases the burden on healthcare systems due to repeated consultations and treatments.

Experts believe that improving air quality through strong public health measures could significantly reduce migraine cases in heavily polluted urban regions.

Air pollution appears to trigger migraines through a mix of neuroinflammatory, vascular, and autonomic mechanisms. It activates the trigemino-vascular system, increases oxidative stress, and disrupts the body’s natural balance.

This growing understanding reveals how deeply environmental factors influence neurological conditions and why controlling pollution is not only a matter of clean air but also of reducing the hidden toll it takes on our brains.

Sharing a health update of the beloved actor Bruce Willis, his wife Emma Hemmings opened up about how the condition is affecting the actor. In an interview with NewsNation, she spoke on the misconception that the Die-Hard superstar had Alzheimer’s.

“FTD isn’t Alzheimer’s,” she stressed. She clarified that while Frontotemporal Dementia (FTD) affects his ability to communicate and behave, “Bruce doesn’t have Alzheimer’s. So, he does know who we are.”

She noted that while he struggles to verbalize his love, words are not necessary for their family. "We don’t need words," she said. "We have a very deep connection, and we have learned to sort of meet him where he’s at." FTD symptoms can include difficulty with speech, changes in personality, and slow movements, and there is currently no cure.

The Alzheimer’s Research Association explains that dementia is an "umbrella term" used to describe problems with memory, thinking, and reasoning. It's not a single disease. Instead, diseases like Frontotemporal Dementia (FTD) and Alzheimer's are two different causes that lead to similar, but different symptoms.

It is very important for doctors to know the differences between FTD and Alzheimer's. Getting the correct diagnosis early helps patients get the right treatment sooner. This can greatly improve their health and overall quality of life.

How Is FTD Different from Alzheimer’s Disease?

The biggest difference between these two conditions is which part of the brain they damage first. This difference explains why the early symptoms are so distinct.

What Part of the Brain Does FTD affect?

Frontotemporal Dementia (FTD), as its name suggests, mainly affects the front (frontal) and sides (temporal) of the brain. These areas are like the control center for your personality, behavior, and language skills. For example, the frontal lobe handles judgment and controlling your emotions, and the temporal lobe helps you process what you hear and form memories.

What Part of the Brain Does Alzheimer’s Affect?

In contrast, Alzheimer's disease usually starts by damaging areas crucial for memory, such as the hippocampus. These are the parts of the brain that help you learn new things and retrieve old memories. As Alzheimer's gets worse, the damage spreads to more areas of the brain, affecting memory, behavior, language, and even how you see things.

What Ages Do FTD and Alzheimer’s Typically Start?

Another key difference is when people usually start showing symptoms.

FTD often begins when people are younger, typically between 40 and 60 years old. This is why it's sometimes called an earlier-onset dementia.

Alzheimer's is much more common in older adults, usually affecting people who are 65 and over. Getting older is the biggest risk factor for Alzheimer's, but remember, it is not a normal part of getting older or healthy aging.

How Are The Symptoms of FTD different from Alzheimer’s?

While both diseases cause dementia, the first symptoms are usually very distinct, which helps doctors tell them apart.

In early Alzheimer's, the main symptom is memory loss.

• Often forgetting recent conversations or events.
• Having trouble with spatial orientation, which means they might get lost in places they know well.
• Struggle to find the right word, their ability to speak clearly and understand others usually stays better for longer than in FTD.
• Delusions or hallucinations also happen more often as Alzheimer's gets worse.

In early FTD, the initial signs are usually behavioral changes or language problems.

• Acting impulsively
• Lose their filter in conversation
• Become very withdrawn.

This is common in the most frequent type of FTD, called behavioral variant FTD (bvFTD). In another type of FTD called Primary Progressive Aphasia (PPA), the first problem is a difficulty with,

• Speaking
• Understanding language
• Writing.
• While people with advanced FTD will eventually have memory loss, it's not the primary symptom at the beginning.

How Has FTD Affected Bruce Willis?

In the interview Emma Hemmings admitted Bruce is unaware of his frontotemporal dementia (FTD) diagnosis.

She explained that it is a part of the disease itself for the person not to realize their health is declining. When asked about a fear that Willis might have voiced his distress about his condition, she confirmed:

"The person doesn’t realize that they are experiencing a decline in their health. So it’s not denial; this is just a part of the disease. So, it’s a blessing and a curse. But I am grateful that Bruce never tapped into the idea that he had FTD.”

Fatty liver disease and insulin resistance often go hand in hand. It is almost like a vicious cycle. What actually happens is when the fat builds up in the liver, it interferes with the body' ability to use insulin effectively. This then triggers insulin resistance, which could fuel fat accumulation, inflammation, and then lead to liver damage. This for a long time could lead to nonalcoholic steatohepatitis (NASH), which is a severe form of fatty liver disease marked by liver inflammation and scarring.

Many experts, including diabetologist Dr Brijmohan Arora has pointed that there could be certain visible changes in your body that could help you detect the early signs of NASH, without having to take a blood test.

What Are The Signs You Should Not Ignore?

As per the doctor, who has over 24 years of experience and practices in Dwarka. He posted a video on Instagram titled ;How to detect a fatty liver without blood tests'. The signs he says include:

Excessive visceral fat — a hard, protruding belly or “belly paunch.”

• Skin tags: small, soft growths on the neck or armpits.
• Red or purple lines on the legs, especially near the ankles.
• A puffy or rounded face with less visible cheekbones.
• High blood pressure (readings above 140 mmHg).

These signs, he explained, can act as “clinical clues” for doctors, especially when patients refuse blood tests.

If You Have A Belly Paunch, It Is A Dangerous Sign

Dr Arora shared story of one of his patients who refused to undergo blood tests and wanted to know whether his liver was healthy. "He had fatty live once and managed to reverse it." However, the patient had returned to the doctor, but refused any testing, this is when the doctor conducted a full physical examination to assess him.

"If your stomach is very protruding and feels hard, it means fat has accumulated around and inside your organs. That is visceral fat. This is a strong indicator of fatty liver." He further added, "If you notice small warts or moles on your neck or armpits, these skin tags are often the number one sign of insulin resistance."

Are There Other Warning Signs Of Insulin Resistance?

Dr Arora also pointed out several other important indicators, including red or purple lines on the feet. He said, "If you see small red or purple lines on your feet, especially near your ankles, it may be a sign of insulin resistance. A puffy face, where your cheekbones are no longer visible, is another common clue."

He also noted that high blood pressure could be one of the most serious warning signs. "If your blood pressure is consistently above 140 or 145, that is quite dangerous. It is one of the most important clinical features of insulin resistance."

Why Is Early Detection Important?

Fatty liver disease and insulin resistance are not just metabolic issues, they can set the stage for type 2 diabetes, cardiovascular disease, and severe liver conditions like NASH. Detecting these early signs can help you take timely steps through diet, exercise, and medical consultation.

Experts recommend maintaining a healthy weight, managing blood sugar, and limiting processed foods and alcohol to protect your liver.

Note: This piece is based on an Instagram post by Dr Arora. Health And Me does not, in any way, promote diagnosis without proper medical testing.