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 US Food and Drug Administration (FDA) has approved tradipitant to be sold under the brand name Nereus, for the prevention of vomiting induced by motion in adults — a first in the last four decades.

Motion sickness affects an estimated 65 to 78 million Americans—roughly 25 to 30 percent of adults—during everyday travel by car, plane, or boat. For decades, patients have had no meaningful new treatment options.

Tradipitant is an oral neurokinin-1 (NK-1) receptor antagonist that prevents motion-induced vomiting in adults.

It is an oral capsule, often taken 60 minutes before travel to block signals causing nausea.

The drug by Vanda Pharmaceuticals is now commercially available across the US.

"Today marks an important milestone for the tens of millions of Americans who experience motion sickness symptoms during common travel," said Mihael H. Polymeropoulos, M.D, President, CEO, and Chairman of Vanda, in a statement.

How Tradipitant Prevents Motion Sickness?

Motion sickness occurs when the brain receives conflicting signals from the eyes, inner ear, and body while in motion. This sensory mismatch is believed to trigger the release of substance P, which activates NK-1 receptors in the central nervous system and ultimately leads to nausea and vomiting.

Tradipitant works by blocking these receptors, interrupting the vomiting pathway.

"NEREUS is a selective, high-affinity antagonist of human substance P/neurokinin-1 (NK-1) receptors that can block the vomiting center of the brain,” Polymeropoulos said.

Tradipitant was approved by the FDA, following two pivotal Phase 3 clinical trials—Motion Syros and Motion Serifos—conducted under real-world conditions on the open sea.

Also read: India Installs US FDA-approved Portable MRI For Bedside Brain Scans At AIIMS Delhi

Both studies demonstrated that tradipitant significantly prevents vomiting compared to placebo, confirming the drug's effectiveness in actual sea travel conditions. It is the first new prescription option for people with a history of motion sickness in over 40 years.

It employs a novel mechanism as a selective, high-affinity antagonist of human substance P/NK-1 receptors. It offers simple dosing with just one or two capsules a day taken approximately an hour before travel.

Is Tradipitant Safe? Are There Any Side-Effects?

Read More: CDC Warns Over Potential Surge In Measles Cases: Will The US Lose Its Elimination Status?

According to Vanda Pharmaceuticals, tradipitant may impair abilities required for driving a motor vehicle or operating heavy machinery.

Combining tradipitant with sedatives or medications that increase the drug's levels may increase this effect. If use together cannot be avoided, your doctor may warn against driving or operating heavy machinery.

The most common side effects associated with tradipitant include drowsiness, headache, and fatigue.

Moreover, strong CYP3A4 inhibitors may increase NEREUS™ levels and the risk of side effects, the company said.

There are limited data on tradipitant's use in pregnant women and children.

Tradipitant is also not recommended in patients with liver problems or severe kidney problems.

Type 2 diabetes was once rare among the young. Now, it is a common diagnosis for Indians in their 20s and 30s. The country currently faces a massive health crisis with 101 million confirmed diabetic patients and 136 million prediabetics. This sudden spike did not happen because human genetics broke down overnight. It happened because the way we live has completely transformed.

Asians (Indians ) already have a " thin- fat " body phenotype, which has a heavy genetic disadvantage. Even when an Indian person appears thin, they typically carry a much higher body fat percentage than a European person of the exact same weight. This fat builds up dangerously as visceral fat around the internal organs. Because of this, Indians develop severe insulin resistance at a much lower Body Mass Index (BMI).

Secondly, we tend to have faster beta-cell exhaustion. The pancreas simply stops producing enough insulin earlier in life.

Thirdly, if you have a positive family history, then the risk is higher and happens at an early age as compared to the previous generation.

But definitely it is not just genetics. Our DNA remains exactly the same as it was a century ago. Still, the age of onset is dropping at an alarming rate. Data from the massive ICMR-INDIAB study reveals that the real "take-off" point for diabetes now sits squarely in the 25 to 34 age bracket. Out of all the people under 25 diagnosed with diabetes today, one in four has Type 2. It used to be very rare to see anything other than Type 1 in young adults.

Now, the situation is completely different. States like Goa, Kerala, and Tamil Nadu are recording huge numbers, especially in city areas. Data collected in Tamil Nadu from 2006 to 2016 proved that the 20 to 39-year-old age group was getting sick at a faster pace than older generations. Across India, the total prevalence rate jumped from 7.1 percent to 11.4 percent. If current trends hold, we are looking at 152 million cases nationwide by 2045.

Why Diabetes Is Rising?

The absolute driver behind this youth explosion is a drastic shift in how we live. Urbanization wiped out physical activity. Young professionals sit at desks for ten hours, endure stressful commutes, and spend their remaining free time staring at screens.

Our diets worsened at the same time. Traditional balanced meals gave way to heavily refined carbohydrates and ultra-processed food, which the younger generation highly depends on. Polished white rice, refined wheat, and cheap ultra-processed foods flood our daily plates. Young people eat far less protein and fiber. This combination of daily sugar spikes and zero physical movement directly causes the abdominal obesity driving this epidemic.

The rapid rise in youth diabetes comes down to a severe gene-environment mismatch. Young Indians live in bodies biologically programmed to store fat to survive famines, but they now live in an environment of constant fast food and zero movement. We cannot rewrite our DNA. We can, however, change our daily habits.

As per RSSDI, early medical screening before age 25 is now an absolute necessity. Replacing heavy carbs with a low-carb, high-protein diet, fixing bad sleep schedules, and making time for daily physical activity can stop this crisis. Youth diabetes is entirely preventable. We just need to act before it is too late.

India holds the record for the highest number of blind individuals in the entire world. The impact that the fact can have on those who hear it should be enough to cause them to stop dead in their tracks. The fact that it is preventable makes it all the more problematic, more than just a number. According to experts from AIIMS, New Delhi, more than 85% of blindness is preventable in the country, and not due to an incurable disease or insurmountable genetic condition.

The overwhelming majority of instances of blindness in India are due to a lack of glasses, or could be prevented by a surgical procedure lasting approximately 20 minutes. And yet, we are left with millions of blind people.

What Is Preventable Blindness?

Preventable blindness refers to vision loss that could have been avoided through timely screening, treatment, correction, or surgical intervention. It is not the same as blindness caused by trauma, hereditary disorders, or conditions beyond medical reach.

The leading culprits in India are well-documented: cataract is responsible for 66.2% of all blindness cases, uncorrected refractive errors for 18.6%, glaucoma for 6.7%, and diabetic retinopathy for 3.3%. Every single one of these is either treatable or manageable with early detection.

Cataracts can be reversed in under thirty minutes. Refractive error can be corrected with spectacles that cost less than a meal at a restaurant. Diabetic retinopathy, if caught early, can be treated before it takes vision at all.

The tragedy of preventable blindness is not medical. It is systemic.

The Scale Of The Problem In India

India carries one of the heaviest burdens of vision loss in the world, and the weight is only growing. There are disparities regarding the burden of vision loss. There are about 75% of the resources and health infrastructure that are found in urban locations whereas there are only 27% of the population and most of the hundreds of millions of people living in rural India do not have access to see an eye doctor because they would need to take a day off work without pay, travel over one hundred kilometers, and pay for the office bill in cash out-of-pocket.

Most people do not try to see an eye doctor, and when they do, it is usually too late to treat the problem.

At the same time, the problem has been exacerbated by the rapidly aging population of India and the incidence of age-related disorders increasing, such as cataracts and the diabetes epidemic, which is one of the largest in the world, has been causing a massive increase in diabetic retinopathy, which will cause continuing loss of vision without proper detection. These are not isolated cases but rather a direct result of the failure of the health care system in India to keep pace with the growing number of diseases in the population.

What Can Be Done?

On the infrastructure side, the priority must be decentralization. Eye care cannot remain a service that lives primarily in urban hospitals. Vision screening needs to be integrated into primary health centers, school programs, and community outreach camps. The private sector, which runs over 70% of all eye care institutes in India, has a role, but so does public policy in incentivizing rural postings and strengthening district-level facilities.

On the workforce side, training mid-level ophthalmic personnel, optometrists, ophthalmic nurses, and vision technicians can extend the reach of a limited specialist pool significantly. Telemedicine-assisted models, where a technician in a rural camp transmits data to a city-based specialist for review, have already shown promise and need to be mainstreamed rather than treated as pilot experiments.

Early detection is arguably the most powerful lever of all. Most people in India visit an eye doctor only after vision loss is already severe. Routine screenings, especially for:

- Adults above 40

- People living with diabetes

- School-going children

Accessing vision care is not complicated. Availability is a major factor. Vision care must also be affordable to be accessible; currently, affordability is at the bottom of the list of priorities.

Examples of initiatives that have been implemented include subsidized cataract surgeries, free glasses for school children, free glasses for senior citizens, and community insurance models for eye care. All of these have been successful with valid results, and there’s plenty of evidence available that supports all these types of programs.

India can solve this. It has the necessary eye surgeon specialists, the model of care, and the evidence needed to make this happen. The issue preventing more people from receiving care, preventing blindness, which could be avoided, has always been a lack of awareness or attention to the problem to turn a statistic into an urgent need. At some point, we need to stop asking why this is happening and start asking why we will allow it to keep happening.