How Much Water Should You Drink?

Updated Feb 5, 2025 | 11:00 PM IST

SummaryAs per experts, drinking 8 glasses of water a day may be unnecessary and the research estimates that the actual requirement is around 1.5 to 1.8 liters per day. This not only includes water, but all kinds of fluids from all sources that we may consume in a day.
How much water should you actually drink in a day?

We all know that drinking water is good for us. If you are feeling tired, have some water. Have a dry skin? Have some water. Have a dry throat? Have some water. It is almost like water is the fix to all our issues. May be it is, but not always. So, are we sometimes drinking more water than necessary? What happens then?

Many say that there is an 8x8 rule one must follow when it comes to drinking water.

What is the 8x8 drinking water rule?

Many believe that in the 8x8 rule, eight 240ml glasses of water per day adds up to almost 2 liters. However, it is not in the guidelines in both the UK and the EU health advisory. None of them recommends this specific amount.

So, where did it origin from?

The origins of this rule seem to come from misinterpreted advice given decades ago. In 1945, a US advisory board suggested adults should consume one milliliter of fluid per calorie of food, totaling about two liters for women and 2.5 liters for men. Importantly, this included all drinks and even water-rich foods like fruits and vegetables.

A later book in 1974 recommended six to eight glasses of water daily but also noted that coffee, tea, and even beer could count towards hydration. Yet, the idea of drinking two liters of plain water daily took hold and has persisted ever since.

How Much Water Do We Really Need?

As per experts, drinking 8 glasses of water a day may be unnecessary and the research estimates that the actual requirement is around 1.5 to 1.8 liters per day. This not only includes water, but all kinds of fluids from all sources that we may consume in a day.

Also, studies show that instead of following a rigid routine, what is best is to focus on factors like temperature, physical activity and health conditions for your water intake. Those in hot and humid climate, high altitudes or pregnant or breastfeeding, and athletes may require more water. Whereas those in cooler areas, with a more sedentary lifestyle won't. However, for the average person, thirst is a more reliable guide than any fixed rule.

ALSO READ: What Happens When You Drink Too Much Water?

Science of Hydration and Dangers Of Over hydration:

Water is necessary to transport nutrients, control temperature, and keep organs functioning. We lose water through sweat, urine, and respiration, so staying hydrated is critical. However, dehydration develops only when the body loses 1-2% of its total water content.

A widespread myth is that feeling thirsty indicates that you are already severely dehydrated. Experts argue that thirst is an excellent evolutionary mechanism that ensures us drink when we need to. The body also produces hormones that aid in water conservation when necessary.

Drinking More Water Than Needed:

While drinking too much water is generally harmless, it can cause hyponatremia, a condition in which salt levels in the blood become dangerously low. This can result in brain enlargement, disorientation, convulsions, and, in extreme cases, death.

There have been reports of athletes overhydrating during endurance races, resulting in significant difficulties. Experts caution that simply following hydration myths might be dangerous, stating that thirst remains the greatest signal of when to drink.

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Mann Ki Baat: PM Modi Addresses The Heatwave, Suggests Aam Panna, Sattu Sherbet

Updated Jun 1, 2026 | 11:31 AM IST

SummaryIn the monthly radio broadcast, Maan Ki Baat, Prime Minister Narendra Modi has urged the people to take precautions during the scorching summer heat.
Mann Ki Baat: PM Modi Addresses The Heatwave, Suggests Suitable Drinks

Credit: Canva

Prime Minister Narendra Modi once again addressed the nation through his monthly radio broadcast, Maan Ki Baat. It was the 134th installment of the broadcast, and the Prime Minister urged the people of India to take extra precautions in summer's scorching heat.

The Prime Minister said, "It is very hot in most parts of the country right now. Strong sun, hot winds, it is very important to take care of yourself in such weather. Keep drinking water. If at all you have to go out in the sun, do so with caution." He added, "Don't forget the guidelines issued by various government departments in this regard."

Then the Prime Minister also addressed traditional food and drinking practices in different parts of the country to stay fit even during the hot summer. He urged the citizens to drink regional traditional drinks to stay hydrated and named popular options like Aam Panna, Sattu sherbet, Kokum sherbet, Sol Kadhi, Panakam, Neer Mor, Sambaram, Bael Pana, and Buttermilk. "Ek Bharat Shreshtha Bharat," he added.

The Prime Minister also mentions mangoes, which are a household summer treat in India. He said, "Every region… its own mango, its own flavor, its own aroma." Then he described these different mangoes and their specialties as well.

Prime Minister Narendra Modi also mentions the journey of the Indian mangoes from domestic production to the global market.

Easy Tips To Stay Fit During a Heatwave

Drink water consistently at regular intervals instead of gulping large quantities at once. Electrolyte-rich fluids like coconut water, lemon water with a pinch of salt, or buttermilk are healthy, affordable options to soothe parched throats.

Add items like curd, rice, cucumber, and bottle gourd to your diet and avoid red meat and fried foods during peak summer days.

Extreme temperatures put additional stress on the cardiovascular system, especially in people with hypertension, diabetes, or heart conditions. Make sure to take all prescribed medications exactly as advised—don’t skip doses even if you experience heat-induced nausea. If you feel dizzy or experience palpitations or severe fatigue, consult your doctor as soon as possible.

Air conditioning is helpful, but overexposure can lead to dry skin, headaches, and respiratory discomfort. Once every two or three hours, step away from your desk for a few minutes. Walk or stand, and sip some water.

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Can Sugary Drinks Cause Brain Aging?

Updated May 27, 2026 | 06:05 PM IST

SummaryA new study claims that consumption of sugary beverages can cause the speeding up of brain aging and memory decline.
Can Sugary Drinks Cause Brain Aging?

Credit: iStock

Sugary drinks are a very soothing option in summer, but come with several health-related issues like diabetes, fatty liver, and heart disease, to name a few. And now this list is getting a new addition, as a new study claims that sugary beverages can cause brain aging. This research is linked to the Framingham Heart Study.

As the Indian summer is in full sway, the demand for cold sugary drinks is also rising along with it. During the hot summer, people use these beverages as cooling drinks, and consumption also goes through the roof.

What Did The Study Find?

The researchers from the Boston University School of Medicine studied participants in the Framingham Heart Study Offspring and the Third Generation Study. The research was done on the possible impacts that sugar-sweetened beverages (SSBs) and artificially sweetened beverages (ASBs) have on the brain.

The study finds that consuming a large amount of sugary drinks was associated with a smaller total size of the brain and reduced volume of the hippocampus, which is a critical region in the brain essential for learning and memory.

The research points out that consuming too many sugary drinks can lead to inflammation, poor blood vessel function, and high blood sugar, which in turn might harm the brain.

Which Drinks Are Considered As Sugary Drinks?

Sugary drinks or sugar-sweetened beverages (SSBs) are drinks that are added with sugar, sweeteners, or syrups. Some of the common sugary beverages are carbonated soft drinks, energy or sports drinks, and fruit-flavored drinks.

How to Cut Back on Sugary Drinks

Sugary drinks can feel addictive. If you find yourself hooked, try to slowly reduce how much you drink, just like you would with alcohol or tobacco. It helps to plan ahead for when you usually crave a soda.

You can start by mixing plain sparkling water with an equal amount of fruit juice or soda. Then, week by week, slowly reduce the amount of the sugary drink until you're mostly just drinking sparkling water. If it helps, add a little lemon or lime juice for flavor. Make this your new habit.

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Can Beetroot Juice Help Lower Blood Pressure?

Updated May 27, 2026 | 03:08 PM IST

SummaryA new study by the University of Exeter found that drinking beetroot juice twice daily can help in controlling blood pressure.
Can Beetroot Juice Help Lower Blood Pressure?

Credit: iStock

The data from the Centers for Disease Control and Prevention (CDC) shows that almost half the population of the United States has high blood pressure, numbering around 119.9 million people, who are suffering from this disease. The data also reveals that over 660,000 deaths occur every year. Thus, keeping your blood pressure under check is a necessity, and beetroot, along with some leafy greens, can help you in this.

A recent study conducted by the University of Exeter found that drinking beetroot juice twice daily can help lower blood pressure in older adults in just a fortnight. The findings of this study were published in the journal Free Radical Biology and Medicine.

The study was conducted with 75 volunteers from different age groups. They belong to the age bracket of 30s to 60s and 70s. The researchers asked each person to complete two separate two-week trials. In one of the two weeks, they were given nitrate-rich beetroot juice, and in the other week, it changed to a placebo version with the nitrate removed.

Benefits Of Drinking Beetroot Juice

  • Beetroot is naturally high in nitrates, which the body converts into nitric oxide. This compound relaxes and widens blood vessels, improving circulation and reducing blood pressure.

  • Beetroot juice contains betalains, natural pigments with anti-inflammatory properties.

  • Beetroot contains iron, an essential component of red blood cells, which helps transport oxygen throughout the body. Low iron levels can lead to iron deficiency anemia, resulting in symptoms such as fatigue, dizziness, and shortness of breath.

  • Beetroot juice may help manage nonalcoholic fatty liver disease (NAFLD).

Benefits Of Adding Spinach to Your Diet

  • The potassium in spinach helps relax blood vessels, leading to lower blood pressure. Spinach is also high in magnesium and folate, which support the production of nitric oxide—a molecule that dilates blood vessels and promotes better circulation.

  • Spinach provides a significant amount of vitamins and minerals with minimal calories. This makes it an ideal food for those looking to maintain a healthy weight while getting ample nutrients.

  • Spinach is rich in antioxidants such as beta-carotene and lutein, which protect against cell damage caused by free radicals.

  • Spinach is high in fiber, with about 2 grams per serving. Insoluble fiber helps improve digestion by adding bulk to stools and preventing constipation.

  • The lutein and zeaxanthin in spinach, antioxidants related to vitamin A, help protect the eyes from sun damage and age-related disorders like cataracts and macular degeneration.

  • Spinach is an excellent plant-based source of iron, essential for producing haemoglobin in red blood cells. This helps prevent iron-deficiency anemia, which can cause fatigue.

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