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.

Carbohydrates have unfortunately become one of the most misunderstood parts of the diet, particularly when it comes to weight loss.

Cutting out rice, roti or other carbohydrate-rich foods completely is not necessarily the answer. Carbohydrates are an important source of energy, and the issue is more about the quality, quantity and overall balance of the diet than the nutrient itself.

Why Cutting Carbs Completely May Not Be The Answer

For Indians, this becomes particularly relevant because staples such as rice, roti, poha, idli and other grain-based foods are an integral part of our traditional diets.

Removing them completely can sometimes make a diet unnecessarily restrictive and difficult to sustain. It may also mean missing out on foods that provide fibre, vitamins, minerals and other nutrients, particularly when whole grains and minimally processed sources are chosen.

Also read: The New Nutrition Gap: Why Knowing What To Eat Doesn't Mean We Actually Eat It

Not All Carbohydrates Are Created Equal

What matters is understanding the difference between refined and high-quality carbohydrate sources. A diet dominated by refined flour, sugary foods, sweetened beverages and highly processed snacks is very different from one that includes whole grains, millets, legumes, vegetables and appropriately portioned rice or roti.

The Bigger Picture Behind Weight Loss

Another common mistake is replacing carbohydrates with excessive amounts of protein or fat without considering the overall nutritional balance.

Weight loss ultimately depends on overall energy intake, dietary quality, physical activity, sleep and several other factors—not simply whether carbohydrates are present on the plate.

Also read: Protein Is In Everything, But Is Every Source Actually Healthy? Experts Explain

How To Build A More Balanced Indian Plate

A practical approach is to focus on portions and pair carbohydrates with protein, vegetables and healthy fats. For example, roti with dal and vegetables or rice with dal, vegetables and curd can form a balanced meal. Choosing less-refined carbohydrate sources and paying attention to portion sizes can make the diet both nutritious and sustainable.

Carbohydrates do not need to be feared or completely eliminated. The goal should be to eat the right kind, in appropriate portions, as part of a balanced diet rather than following the latest anti-carb trend.

Healthy eating is something every individual is aware of, not only because of various online conversations around it but also because it is one of the subjects that is being discussed widely amongst individuals today.

From taking up diet charts with the help of AI to taking details from social media reels shared by several wellness influencers – information about food and health is readily available for all age groups at any time and it is customised according to their preferences, thanks to our algorithms.

Most people are aware that a healthy diet includes vegetables, fruits, home cooked meals, adequate water intake, and most importantly, limited consumption of outside food like fried and processed foods.

Unhealthy Eating Habits Continue To Rise Despite Awareness

Also read: From Pickles to Papad: Which Everyday Indian Foods Could Be Worth Rethinking for Cancer Prevention?

Despite growing awareness amongst the population, unhealthy eating habits continue to rise, which is eventually contributing to various lifestyle diseases like obesity, diabetes, cardiovascular diseases, and other health issues.

For most people, lack of information and knowledge about nutrition is not a challenge anymore, but the inability to act on that knowledge and consistently following through the habits and incorporating them into day-to-day life is. This growing gap between knowing what to eat and not being able to follow through is called the new nutrition gap.

Many individuals understand what a healthy diet is? yet struggle due to busy schedules, long working hours, and stress. Also, the convenience of ordering food often leads to dietary choices, that do not support long-term health. It is common for individuals to skip meal preparation, rely heavily on packaged food and snacks or food from restaurants, and beverages during stressful times despite being aware of their harmful impact on health.

“Social settings” add another challenge to sticking to one’s diet as planned. Office celebrations, family gatherings, and social outings are often centred around calorie dense foods and sugary treats. In addition, many people follow an all or nothing approach to eating, believing that a single indulgence has undone all their progress. This mindset can also make healthy eating feel difficult and unsustainable in the long run.

Also read: Protein Is In Everything, But Is Every Source Actually Healthy? Experts Explain

Closing this gap does not require restrictive diets or unrealistic rules. It is about building small, practical and healthy habits that can follow consistently over time. To maintain the same, some of the following small habits can be helpful:

1. Make healthy the easy option

2. Stop punishing yourself

A healthy lifestyle is not determined by a single meal. Occasionally eating a vada pav or enjoying a dessert, festive treats are not going to harm long-term health when it is balanced with nutritious meals throughout the day. Instead of feeling guilty after eating an unhealthy food and worrying over its impact your progress, one should simply focus on continuing the prioritising balanced eating habits with their next meal.

3. Make it personal

Don't eat healthy because an influencer said so. Eat healthy because you want to feel lighter, sleep better, and not feel acidity every evening. It is important to take guidance from a professional like a Certified Registered Dietiian when you are not able to follow through with your diet or are facing any other challenge instead of depending solely on unreliable nutrition advice and social media trends.

Healthy eating becomes easier when one makes conscious choices of maintaining a balanced diet, regular meal planning, mindful eating, and realistic lifestyle changes.

By Vidisha Parekh, Chief Dietician at Lilavati Hospital and Research Centre, Mumbai

Indian cuisine is known for its delicious taste and varied nature. Often, pickles, papad, namkeen and preserved products form an essential part of our everyday diet.

However, in terms of cancer prevention, this is not about how much we should give up on these products. The question is about the frequency of consumption and its proportion to the diet as a whole.

Why Salt And Preserved Foods Need A Closer Look?

One of the first factors that requires revision is salt consumption. Pickles and papad may be quite salty and even if we consume them from time to time or in small quantities.

High levels of salt in the diet have been linked to the higher risk of developing stomach cancer. Salt may irritate the stomach walls and promote the development of conditions which make the stomach more susceptible to other carcinogens. According to the World Health Organization, we should not consume more than 5 grams of salt a day.

It is not about the risk of consuming a small portion of homemade pickles with lunch. What really matters is the frequent and intensive consumption of salty and preserved foods, in combination with an unhealthy diet. Processed meat is another category to look out for. Sausages, salamis, bacons, and all types of meat products that are cured or preserved increase the risk of colon and rectal cancers.

Among Indians, consumption of processed meat products, such as some packaged meat preparations, may also be something to take into account. The inclusion of these foods in the diet is better minimized than made a constant feature of the diet.

Also read: Protein Is In Everything, But Is Every Source Actually Healthy? Experts Explain

When Everyday Snacks Become A Bigger Concern?

There are foods which may not be traditionally categorized as “unhealthy” but become unhealthy when consumed excessively—fried snacks, farsan, namkeen, sweets, sodas, highly processed packaged foods.

Frequent consumption can lead to an intake of excessive calories and result in gaining weight. Having too much body fat increases the risk of cancer itself.

Also read: Diabetes Diet: Build A Balanced Plate, Not Just Cut Carbs, Doctors Explain

What To Put On The Plate Instead?

Then, what to replace these foods with? Not expensive “superfoods”. More vegetables, fruits, pulses, beans and whole grains in the diet will protect you from cancer much better than eating these unhealthy foods. As per WHO, people older than 10 years old need at least 400 grams of fruits and vegetables on a daily basis.

It comes down to a simple point: cancer prevention is not based on fear of particular foods; it is based on making improvements in our dietary intake. We don’t need to sacrifice our food culture; we just need to add balance to it: less salty foods, less processed foods, more fiber-containing plant foods and proper servings.

Foods constitute one of many aspects of cancer prevention, in addition to abstaining from tobacco, alcohol moderation, maintaining a healthy body weight, physical activity and regular screenings.

It is not about making our traditional thali unpalatable. It is about making decisions that benefit us now and protect our future.

By Dr Nitin Bayas, Oncologist, MOC Cancer Care, Mumbai