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 United Kingdom is facing constant heatwaves. So far, the nation has witnessed two heatwaves, while the natural temperature increases usually during late July and August, thus creating fear and the possibility of more and more temperature rises. As the country has been going through a weather roller-coaster since May, there was a huge area of high pressure, commonly explained as a 'heat dome'. This resulted in dry, very warm, and sunny weather in the island nation.

Notably, the temperature soared up to 35.1 °C in London during the month of May. The temperature in the UK has been on a rising trend over the past few years, and the first time it touches 40C in July 2022. And according to the experts at the Met Office, if global warming continues at its current pace, temperatures in the mid-forties could be a serious possibility for the UK by 2050.

The World Health Organization advises people to drink plenty of water, avoid going outdoors during the hottest hours of the day, wear loose and light-coloured clothing, and keep homes as cool as possible as temperatures continue to spike across many parts of the world.

Indians are used to living with intense summer heat, and over the years, people have developed simple yet effective ways to cope with it. Many prefer to finish outdoor work during the cooler hours of the morning or after sunset. Drinking plenty of water and traditional cooling beverages, seeking shade whenever possible, and keeping a close eye on elderly family members, young children, and people with existing health problems are all common practices during extended spells of extreme heat.

Also Read: Why Thousands Of Black Men In The UK Are Now Being Invited For Prostate Cancer Screening?

Hospitals Under Pressure Throughout Western Europe And Strict Restrictions

The worsening conditions have disrupted healthcare services, with media reports saying hospitals have had to postpone critical imaging scans after sensitive equipment overheated. Cities have also opened emergency cooling centers to protect vulnerable residents.

In Paris, authorities have announced temporary bans on public alcohol consumption and takeaway alcohol sales to ease pressure on hospitals. Public drinking will be prohibited from noon to 7 a.m. over the weekend, while takeaway alcohol sales will be banned between 6 p.m. and 7 a.m.

The extreme temperatures have also reached the sporting world. Formula 1's governing body, the FIA, has declared another "heat hazard" ahead of the Austrian Grand Prix weekend at Spielberg's Red Bull Ring, triggering additional measures to protect drivers, teams, and spectators.

The June 2026 heatwave has triggered red alerts across France, Spain, Italy, and the United Kingdom, and killed dozens of people.

How Does Heat Impact Health?

Health experts warn that prolonged exposure to extreme heat can have serious and sometimes fatal consequences, particularly for older adults and people with underlying medical conditions.

According to the WHO, extreme heat can overwhelm the body's ability to regulate temperature, increasing the risk of heat exhaustion and heatstroke. As the body works harder to cool itself, it places added strain on the heart and kidneys, potentially worsening chronic conditions such as cardiovascular, respiratory, mental health, and diabetes-related illnesses, and increasing the risk of acute kidney injury.

Although monsoon rains provide relief from the unbearable summer heat, they also increase the risk of infections, dehydration, and diseases that are transmitted through water and that can affect the functioning of your kidneys. Since kidneys play a crucial role in eliminating toxins from your body and maintaining fluid balance, kidney care during the monsoon season becomes necessary.

Stay Hydrated

Though it is cooler during monsoon rains, your body needs enough water to help the kidneys filter the toxins efficiently. Try drinking 2-3 liters of clean water daily, or according to the requirement advised by your doctor. Avoid drinking contaminated water, as it increases the risk of infections in the kidneys.

Eat Healthy and Fresh Food

Eat fresh and cooked food at home instead of junk food that might get contaminated during the monsoon rains. Include seasonal fruits, vegetables, whole grains, and healthy protein sources in your diet. Restrict the intake of excess salt, canned products, and sugar drinks.

Prevent Infections

The monsoon season is prone to UTIs that may eventually reach the kidneys if not treated on time. Keep your body clean, wear dry clothes, and never keep urine in your bladder for a prolonged period. In case you have burning sensations while passing urine, fever, or pain in your lower abdomen, do see a doctor.

Control Health Problems

Individuals suffering from diabetes, hypertension, or pre-existing kidney problems should take special care of themselves throughout the monsoon. They should be taking their medications, measuring their sugar and blood pressure levels, and undergoing regular medical examinations to avoid kidney diseases.

No Self-medication

Analgesics and other OTC medications can cause damage to the kidneys when consumed frequently and without consulting a doctor.

Conclusion

It does not take much effort to maintain the health of your kidneys during the monsoon season. Simple things such as staying well-hydrated, consuming hygienic food, preventing any infection, keeping control of existing illnesses, and taking no medicines unnecessarily will ensure that your kidneys continue to perform at their best. In case of any swelling, change in urine output, fever, or back pain, you must see a doctor right away. The importance of the kidneys is undeniable for your well-being.

(By Dr. Bhanu Mishra, a Consultant- Nephrologist at Fortis Hospital, Shalimar Bagh)

When one hears about plastic surgery, he or she usually associates it with beauty operations designed to improve one's appearance.

Reconstructive plastic surgery is a very particular field of medicine that addresses problems with the restoration of patients' form and functions who suffer from trauma, cancer, birth defects, burns, and complicated wounds. For many people, reconstructive surgery is far from beautification. It is all about getting back to an independent life.

Reconstructive Surgery After Trauma and Cancer

Injuries that can occur following accidents on the road, incidents at industries, electric burns, and animal bites often lead to severe destruction to the skin, muscles, tendons, nerves, blood vessels, and bones. In addition, cancers of the breast, head and neck, mouth, skin, and limb regions are often treated with extensive surgical excisions to provide complete clearance from the disease.

Though these operations are necessary to save lives, they might lead to considerable impairment and deformities in the patients. Reconstructive plastic surgery helps solve these problems.

Advanced Techniques in Modern Reconstruction

Today's reconstruction surgery uses sophisticated methods, including microsurgical free tissue transfer, perforator flaps, local and regional flap reconstruction, split-thickness and full-thickness skin grafting, nerve grafting, tendon reconstruction, and vascular anastomosis.

The application of microsurgery, in particular, has greatly improved the possibilities for performing reconstruction surgeries through transferring viable tissue from one region of the body to another with the re-establishment of blood supply from blood vessels of just one to three millimeters in diameter using a surgical microscope.

Restoring Function After Cancer Surgery

One of the biggest breakthroughs in the field of reconstructive surgery has been in the area of post-cancer treatment. Women who have undergone surgery due to breast cancer have the option to undergo either immediate or delayed breast reconstruction surgery through implants or through autologous tissues to help restore their self-image and mental well-being.

Similarly, patients who have undergone surgery due to oral, jaw, or facial cancer can improve their functionality and social standing through microvascular surgery.

Burn Reconstruction and Functional Recovery

The other significant factor to consider is the importance of reconstructive surgery in the treatment of burns. Severe burns typically lead to contracture scars and limited movement of joints.

Excision, skin grafting, flaps, and scar revision surgeries are key in improving function, aesthetics, and reducing disability. Reconstruction of hands following injuries or burns allows people to carry out their daily tasks and work.

Restoring Hope Beyond Surgery

Reconstruction is not limited to the surgical theater but is best done using a multi-disciplinary team comprising plastic surgeons, oncologists, trauma surgeons, physiotherapists, occupational therapists, psychologists, dietitians, and rehabilitators. Rehabilitation, scar management, physiotherapy, and follow-up are just as important after surgery as the surgery itself.

Reconstructive plastic surgery is thus much more than a field of surgery; it is a specialty whose goal is to restore hope. Through a blend of surgical skills and compassion, it gives people an opportunity to transcend the physical and psychological effects of injuries or cancers. For many people, it changes the experience of survival into that of recovery.