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.

Coffee is one of the world’s most widely consumed beverages and has been linked to various health benefits, including a lower risk of conditions such as type 2 diabetes and cardiovascular disease. However, the biological mechanisms behind these benefits remain unclear.

Now, a Finnish study suggests that people who regularly drink coffee may have healthier body composition and metabolic markers.

The study, published in the European Journal of Nutrition, also found distinct associations between coffee consumption and sex hormones in men and women.

What Did The Study Find?

Researchers from the University of Oulu in Finland analyzed data from 2,264 participants, all aged 46, from the Northern Finland Birth Cohort 1966. They examined how coffee consumption was associated with circulating metabolites, cardiometabolic risk markers and sex hormones.

Coffee Linked To Leaner Body Profiles

Compared with people who drank less coffee, those who consumed more had:

• Lower total body fat
• Lower visceral fat
• Greater skeletal muscle mass

These biomarkers have previously been linked to insulin resistance and an increased risk of type 2 diabetes when chronically elevated.

Coffee And Sex Hormones

The strongest sex-specific associations were observed in men. Among men, higher coffee consumption was linked to:

• A more favorable glucose-insulin profile
• Higher concentrations of total and bioavailable testosterone
• Increased levels of sex hormone-binding globulin (SHBG)
• At the same time, free testosterone and the free androgen index were modestly lower.

What Could Explain The Link?

The researchers stated that hormonal pathways may partly explain the relationship between coffee consumption and metabolic health.

“What stood out in our findings was a distinct hormonal signature that didn't disappear even after we took into account BMI and lifestyle factors, with several of these associations differing between men and women,” said lead author Luca Verroest, a doctoral researcher at the University of Oulu.

More Research Is Needed

However, the findings do not prove that drinking coffee directly makes people leaner or healthier. The study was observational, meaning it identified associations between coffee consumption and metabolic measures rather than establishing cause and effect.

Further research is needed to determine whether coffee itself contributes to these differences in body composition and metabolic health.

How Much Coffee Is Good For You?

According to a recent scientific statement from the American Heart Association (AHA), published in the peer-reviewed journal Circulation, for most healthy adults, drinking up to five cups of black caffeinated coffee a day — providing up to 400 mg of caffeine — is considered safe and may even benefit heart health.

However, the statement noted that how coffee is brewed could make a difference, not just for its taste but also for cholesterol levels.

A review of the latest evidence on caffeine and cardiovascular health found that brewing methods matter because some types of coffee contain compounds that can raise LDL, or “bad,” cholesterol.

The review also found that drinking three to five 8-ounce cups of regular black coffee daily was associated with a lower risk of:

Heart disease

Stroke

Heart failure

Type 2 diabetes

Some abnormal heart rhythms.

For decades, people have been advised to avoid full-fat dairy over concerns that it could contribute to weight gain and higher cholesterol levels. Now, a new, albeit small, study challenges that view. It found that three daily servings of full-fat dairy did not worsen weight or cholesterol and may even offer some health benefits.

The study, led by researchers at the University of Toronto, found that adults who consumed three servings of full-fat dairy each day did not experience adverse changes in blood cholesterol, blood lipids or insulin resistance. The findings were published in The Journal of Nutrition.

"Those that had three servings of dairy didn't have adverse levels of blood cholesterol or lipids or evidence of insulin resistance," said Professor Harvey Anderson of the University of Toronto.

Why Full-Fat Dairy Has Long Raised Concerns

Dairy foods contain saturated fat, which has traditionally been associated with higher cholesterol and an increased risk of cardiovascular disease.

As a result, dietary recommendations in Canada and many other countries have generally encouraged people to choose fat-free or low-fat dairy products to reduce saturated fat intake.

However, Anderson, a professor of nutritional sciences at the University of Toronto's Temerty Faculty of Medicine, said human research has not always supported these concerns.

Numerous human studies have found no link between full-fat dairy consumption and harmful health outcomes.

What Did the Study Find?

To examine the link, the 12-week study included 74 adults with overweight or obesity who were randomly assigned to one of three dietary groups:

• A low-dairy, calorie-restricted diet
• An energy-neutral diet that included three servings of dairy each day
• An unrestricted diet that also included three daily servings of dairy

After 12 weeks, researchers found no meaningful differences in weight gain, body composition or cholesterol levels between people following the low-dairy diet and those consuming three servings of dairy each day.

On the other hand, people consuming more dairy showed improvements in blood pressure and consumed more calcium, protein, and vitamin D.

The reason may be the "dairy matrix hypothesis," the researchers said. This suggests that the health effects of a food may depend on how its components interact rather than simply on the amount of one nutrient it contains.

"With dairy products, it's got two proteins -- casein and whey -- that are bound together with fat and with nutrients mixed in," Anderson said.

According to Anderson, this complex structure allows nutrients in dairy foods to be delivered to the body gradually. That may help explain why the effects of eating dairy can differ from what would be predicted by looking at saturated fat or other individual nutrients in isolation.

Why This May Be Helpful for Older Adults

Anderson said the findings may be particularly relevant for older adults. As people age, they generally require less energy and may struggle to consume enough protein and other essential nutrients while maintaining an appropriate calorie intake.

Dairy is already a familiar food for many older adults and provides energy, protein and other nutrients. Anderson said it could therefore offer a practical way to help meet nutritional needs without increasing the risk of diabetes or other chronic diseases.

More broadly, the findings support an approach to nutrition research and dietary guidance that considers whole foods rather than focusing primarily on individual nutrients.

With nutrition trends constantly changing and dietary advice sometimes appearing contradictory, Anderson offered a simple message: "Keep it simple, eat a variety of foods and not too much of anything."

Paneer has long been a staple in Indian households, valued for its high protein content and versatility. However, growing concerns over food adulteration and the increasing availability of cheaper alternatives have brought analogue paneer into the spotlight.

While both products may look similar on the plate, they differ significantly in how they are made, their nutritional value, and their potential impact on health.

Real Paneer Vs Analogue Paneer

Real paneer is made by curdling milk. It naturally contains dairy protein (casein), calcium, and other milk nutrients.

The nutritional differences between the two can be significant. While genuine paneer provides complete protein and beneficial dairy nutrients, analogue paneer may contain lower-quality protein, higher amounts of unhealthy fats, sodium, and food additives depending on its formulation.

Regular consumption of heavily processed versions, particularly those high in trans fats or saturated fats, could contribute to long-term health concerns when eaten frequently as part of an unhealthy diet.

That said, not all analogue paneer products are nutritionally poor, making it important for consumers to read ingredient labels and choose products carefully.

Analogue paneer is typically made using vegetable fats/oils, starches, emulsifiers, and other additives to mimic paneer's texture and appearance. It is often cheaper and may contain substantially less protein than real paneer.

If someone regularly eats analogue paneer believing it is real paneer:

• They may consume less protein and calcium than expected, especially if paneer is a major protein source in their diet.
• Some products may contain higher amounts of refined starch, sodium, saturated fat, or hydrogenated fats, depending on formulation.
• Over years, frequent intake of products rich in trans fats or poor-quality fats could contribute to worse cholesterol levels and cardiovascular risk.
• The biggest issue is often mislabeling: people think they are getting the nutritional benefits of dairy paneer when they are not.

Also read: Why Has FSSAI Banned The Sale Of Dabur India's Ghee, Honey & Other Products?

What Happens If You Eat Analogue Paneer?

That said, not all analogue paneer is inherently harmful. When manufactured properly and clearly labeled, it is a legal food product. The health impact depends on its ingredients and how often it is consumed.

Occasional consumption is unlikely to be a major problem for most healthy people. However, people with heart disease, high cholesterol, diabetes, or those trying to maintain a balanced diet may benefit from choosing traditional paneer more often.

Understanding what goes into the food we eat and making informed choices can help ensure that convenience does not come at the cost of good nutrition.

By Dr. Aakash Patel, Internal Medicine, Sterling Hospital, Gandhidham