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.

People who are trying to lose weight may be able to see progress sooner by following a simple tip backed by the NHS. The health service shares guidance for anyone aiming to improve their diet and lose weight in a safe, steady way, including those advised by their GP to slim down. On the Better Health website, the NHS has a page titled Healthy eating when trying to lose weight, which offers practical advice for everyday meals.

One of the easiest rules to put into practice is increasing the amount of fruit and vegetables in your diet. Doing so can also help people meet their five-a-day target, a guideline recommended by both the NHS and the World Health Organisation.

NHS Advice Could Help People Lose Weight Faster

The NHS says fruit and vegetables should be a core part of daily eating. It explains: “When it comes to fruit and veg, eating five portions a day is the minimum you should aim for – but the more you eat the better! They are a good source of fibre, low in calories and great to snack on. Increase your intake and make it a goal to hit your five a day, every day.”

To make this easier, people are encouraged to follow what is known as the “two or more” rule. This means adding at least two portions of vegetables to every main meal. According to the NHS, aiming for two or more portions of veg at mealtimes should make up roughly half of your plate.

Health Benefits Beyond Weight Loss

The World Health Organisation states that eating at least 400g of fruit and vegetables each day is linked to a lower risk of heart disease, stroke, and certain cancers. This means boosting vegetable intake can improve overall health, not just support weight loss.

Alongside fruit and vegetables, the NHS advises people trying to lose weight to include protein in every meal. Protein helps you feel full for longer and can reduce the urge to snack. Good options include eggs, fish, beans, pulses, and lean cuts of meat.

Carbohydrates, Fats, And Dairy Choices

While carbohydrates do not need to be avoided entirely, the NHS recommends limiting them to no more than a third of your daily food intake. When eating carbs, wholegrain versions are encouraged where possible. Dairy products should also be chosen carefully, with low-fat and low-sugar options preferred.

For those who eat fish, the NHS advises having two portions per week, with at least one being oily fish such as salmon or trout. When cooking, oils like olive, sunflower, or rapeseed oil are recommended because they contain healthier unsaturated fats, as per The Mirror.

Staying Hydrated

The NHS also highlights the importance of drinking enough fluids each day. It advises: “Drink six to eight cups of fluid a day. Water, lower-fat milk, tea, coffee, sugar-free drinks. They all count!”

Portion Size Still Matters

Alongside food choices, the NHS stresses that portion size plays a major role in weight management. It notes: “The amount you eat is just as important as what you eat – no matter how healthy your diet is, you can still put on weight if you are eating too much. Having more calories than your body needs each day can lead to weight gain.”

In general, the recommended daily calorie intake is around 2,500kcal for men and 2,000kcal for women. For people trying to lose weight, this usually drops to about 1,900kcal for men and 1,400kcal for women.

The World Health Organization is asking countries across the world to increase taxes on sugary drinks and alcohol to reduce cases of chronic conditions such as Type 2 diabetes, obesity, heart disease and fatty liver.

In a January 13 virtual conference, WHO Director-General Dr Tedros Adhanom Ghebreyesus said: "Health taxes have been shown to reduce consumption of these harmful products, helping to prevent disease and reduce the burden on health systems.

"At the same time, they generate an income stream that governments can use to invest in health, education and social protection."

According to a recent report on sugar-sweetened beverages taxes, at least 116 countries tax sugary drinks, including sodas or carbonated canned drinks, but other high-sugar products, such as 100 per cent fruit juices, sweetened milk drinks and ready-to-drink coffees and teas, escape taxation.

Additionally, another report on alcohol taxes shows that even though 167 countries levy taxes on liquor, wine and beer, alcohol has become more affordable or remained unchanged in price in most countries since 2022, as taxes do not get adjusted for inflation and income growth.

How Will A Tax Increase on Drinks Help?

Apart from increasing the risk for diabetes and heart disease, sugary drinks can also worsen the risk for dental problems, gout, non-alcoholic fatty liver disease and potential kidney/bone issues.

Due to being cheap for consumption, the harmful products are generating billions of dollars in profit for countries and corporations, alike.

However, health systems across the globe are facing mounting financial pressure from preventable noncommunicable diseases and injuries and an increase an taxes will help curb these costs , the WHO said.

Moreover, high tax rates will discourage consumers from buying such drinks and causing long-term damage to their body.

Has This Approach Ever Been Successful?

Yes, the WHO noted that when the UK implemented a tax on sugary drinks in 2018, the country saw a overall reduced sugar consumption, £338 million revenue increase in 2024 and a lower obesity rates in girls aged 10 and 11, especially in deprived communities.

Are Sugary Drinks Only To Blame?

“These are very important findings for preservatives that are not only widely used in the French and European markets, but also in the United States,” said senior author Mathilde Touvier, principal investigator of the NutriNet-Santé study used for the research, as per CTV News.

The cancer-focused study, published in The BMJ, examined the effects of 58 preservatives among nearly 105,000 people who were cancer-free in 2009 and followed for up to 14 years.

Sodium nitrite, commonly used in processed meats such as bacon, ham, and deli meats, was linked to a 32 percent higher risk of prostate cancer. Potassium nitrate was associated with a 22 percent increased risk of breast cancer and a 13 percent rise in overall cancer risk, results showed.

US President Donald Trump’s eating habits have drawn a blunt and unusually candid assessment from Health Secretary Robert F Kennedy Jr, who described them as “unhinged” and dominated by fast food, candy, and Diet Coke.

Speaking on a podcast, Kennedy said Trump regularly consumes what he called “really bad food,” with McDonald’s, sweets, and Diet Coke forming a constant part of his routine. “The interesting thing about the president is that he eats really bad food, which is McDonald's. And then candy and Diet Coke,” Kennedy said, adding that Trump drinks Diet Coke “at all times.”

“Pumping Himself Full of Poison”

Kennedy, who has travelled with Trump, painted a vivid picture of the president’s food habits on the road. “If you travel with him, you get this idea that he's just pumping himself full of poison all day long,” he said.

Despite the criticism, Kennedy also expressed disbelief at Trump’s physical resilience. “He’s got the constitution of a deity,” he remarked. “I don’t know how he’s alive, but he is.”

Why Trump Trusts Fast Food on the Road

According to Kennedy, Trump has his own reasoning for relying on food from large corporate chains while travelling. The president, he said, believes such food is safer and more predictable.

“[Trump] says that the only time that he eats junk food is when he's on the road, and he wants to eat food from big corporations because he trusts it,” Kennedy explained. Trump reportedly worries about falling ill while travelling and prefers food he considers consistent and hygienic.

Kennedy added that Trump’s energy levels remain astonishing despite his diet. “You don’t know how he’s walking around, much less being the most energetic person any of us have ever met,” he said.

A Shift in Tone on Trump’s Health

While Kennedy’s comments about Trump’s diet were sharp, he later struck a more positive tone about the president’s overall health. He said that, in his view, Trump is in excellent physical condition and does not always eat poorly.

“I think he actually does eat pretty good food usually. He's got incredible health,” Kennedy said.

Medical Tests and ‘Exceptional Health’ Claims

Kennedy also cited a medical assessment conducted by Dr Mehmet Oz, referencing Trump’s test results. According to Kennedy, Dr Oz reviewed Trump’s medical records and found unusually high testosterone levels for someone over 70. “He’s got the highest testosterone level that he’s ever seen for an individual over 70 years old,” Kennedy said, adding that Trump would likely be pleased to hear that repeated publicly.

Last month, the White House released details of an MRI scan that described Trump as being in “excellent health.” In a memo, Trump’s physician, Navy Captain Sean Barbabella, said the president’s cardiovascular system was in excellent condition, abdominal imaging was normal, and “all major organs appear very healthy and well-perfused.”

Addressing Age and Visible Bruising

The medical disclosure came amid ongoing public scrutiny of Trump’s health, particularly as he is set to turn 80 in June and is the oldest person ever sworn in as US president.

The White House also addressed visible bruising on Trump’s right hand, explaining that it was linked to aspirin use as part of a standard heart-health regimen.

Inside Trump’s Latest Medical Report

Following a recent checkup at Walter Reed National Military Medical Center, Trump’s physician described him as being in “exceptional health.” The evaluation, which lasted roughly three hours, included lab tests, advanced imaging, and preventive health assessments as part of his ongoing health maintenance plan.

During the visit, Trump also received his annual flu shot and a Covid-19 booster vaccine.

“President Donald J. Trump remains in exceptional health, exhibiting strong cardiovascular, pulmonary, neurological and physical performance,” Barbabella wrote in a one-page memo released by the White House.

The doctor also assessed Trump’s cardiac age, noting that it appeared to be about 14 years younger than his actual age. Trump is currently 79.

Despite questions around his fast-food-heavy diet, official medical reports continue to present a picture of a president who, by clinical measures at least, remains remarkably fit for his age.