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.

Common preservatives added to foods to prevent spoilage and increase shelf life may be linked to a higher risk of several cancers and Type 2 diabetes, according to two new studies from France.

“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 NutriNet-Santé study, launched in 2009, tracks more than 170,000 participants by comparing their web-based diet and lifestyle reports with medical data recorded in France’s national health-care system.

“These are the first two studies in the world to investigate the link between exposure to these food additives and cancer and Type 2 diabetes,” said Touvier, who is also director of research at France’s National Institute of Health and Medical Research in Paris. “That means we must be cautious in interpreting the findings. The results clearly need confirmation.”

Katz, who was not involved in the research, is a preventive and lifestyle medicine specialist and founder of the non-profit True Health Initiative, a global group focused on evidence-based lifestyle medicine.

Cancer And Preservatives: Is There A Link?

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. Only participants who regularly completed detailed 24-hour, brand-specific food questionnaires were included. Those consuming the highest levels of preservatives were compared with those consuming the least.

Researchers closely analysed 17 preservatives eaten by at least 10 percent of participants. Eleven showed no link to cancer. However, six preservatives that were associated with cancer are classified as GRAS, or “generally recognized as safe,” by the US Food and Drug Administration. These include sodium nitrite, potassium nitrate, sorbates, potassium metabisulfite, acetates, and acetic acid.

Sodium Nitrite Linked To Cancer

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. The World Health Organization has long classified processed meat as carcinogenic, with a well-established link to colon cancer.

Sorbates, particularly potassium sorbate, were associated with a 26 percent higher risk of breast cancer and a 14 percent increase in overall cancer risk. These preservatives are commonly used in wine, baked goods, cheese, and sauces to prevent the growth of mold and yeast.

Potassium metabisulfite, widely used in winemaking and brewing, was linked to a 20 percent increase in breast cancer risk and an 11 percent rise in overall cancer risk.

Acetates, which are derived from natural fermentation and added to foods such as meat, sauces, breads, and cheese, were associated with a 25 percent higher risk of breast cancer and a 15 percent increase in cancer overall. Acetic acid, the main component of vinegar, was linked to a 12 percent increase in overall cancer risk.

Other preservatives were also examined, including antioxidants like vitamin C and vitamin E, plant-based extracts such as rosemary, and synthetic additives like butylated hydroxyanisole. While these substances are often linked to lower cancer risk when consumed as part of whole foods, their effects may differ when added as isolated compounds, Touvier explained.

Only two antioxidant preservatives were linked to cancer. Sodium erythorbate and related erythorbates, derived from fermented sugars, were associated with a 21 percent higher risk of breast cancer and a 12 percent increase in overall cancer risk.

Erythorbates are commonly used to prevent discoloration and spoilage in poultry, soft drinks, and baked goods. Sodium erythorbate is also frequently added to processed meats to speed up curing. While observational studies can be affected by uncontrolled variables, an editorial published alongside the research noted its strengths, including detailed dietary assessments and adjustments for preservatives from natural sources and other food additives.

Both studies adjusted for factors such as physical activity, smoking, alcohol intake, medication use, and lifestyle habits. “The finding that specific classes of preservatives are associated with increased risk of certain cancers remained consistent even after these adjustments, showing the issue deserves serious attention and further study,” Katz added.

Type 2 Diabetes And Preservatives

The second study, published Wednesday in Nature Communications, explored the association between preservative intake and the risk of Type 2 diabetes in nearly 109,000 NutriNet-Santé participants who did not have diabetes at the beginning of the study.

Of the 17 preservatives analysed, 12 were linked to nearly a 50 percent higher risk of developing Type 2 diabetes among those with the highest consumption.

Five preservatives already linked to cancer, potassium sorbate, potassium metabisulfite, sodium nitrite, acetic acid, and sodium acetate, were also associated with an increased risk of Type 2 diabetes, with risk rising by 49 percent.

A sixth preservative, calcium propionate, a white powder used to prevent mold and bacterial growth, was also linked to a higher diabetes risk.

The study also found that several antioxidant additives were associated with increased diabetes risk. Additives linked to a 42 percent increase included alpha-tocopherol, the most readily absorbed form of vitamin E; sodium ascorbate, a buffered form of vitamin C; rosemary extracts; sodium erythorbate; phosphoric acid, commonly found in sodas, processed meats, and cheese; and citric acid, a preservative and flavour enhancer with little nutritional value.

Because these are the first studies to examine the role of preservatives in the development of cancer and Type 2 diabetes, further research is needed to confirm and expand on the findings, said Anaïs Hasenböhler, the lead author of both studies and a doctoral researcher at Université Sorbonne Paris Nord.

The U.S. Department of Agriculture (USDA) rolled out a new set of dietary guidelines on Wednesday, Jan. 7, introducing a food pyramid that looks strikingly different from what most people remember. Emphasizing protein and healthy fats while reducing the role of grains, the updated recommendations represent a clear break from previous federal guidance. The accompanying food pyramid graphic almost completely reverses the old model, both in appearance and in the food groups it promotes.

During a White House briefing, Press Secretary Karoline Leavitt highlighted the changes, saying the announcement aligned with President Donald Trump and Health Secretary Robert F. Kennedy Jr.'s mission to "Make America Healthy Again."

Also Read: New Food Pyramid 2026 Reshapes Dietary Guidelines For Americans Under RFK Jr

If you’re used to the pyramid from the early 2000s, it may take a moment to adjust to the new look. Here are some of the major differences between the old and new food pyramids.

New Food Pyramids 2026: What Does The New Food Pyramid Look Like?

The U.S. had stopped using the pyramid as a guide back in 2011, switching to a plate-style visual for dietary recommendations. Now, under RFK Jr.’s leadership at HHS, the pyramid is back—but flipped. The upside-down triangle now places the foods that should make up most of your diet at the top, while foods to eat sparingly sit at the bottom.

RFK Jr.’s New Food Pyramid vs Old Food Pyramid

It’s not just the graphic that’s changed. The hierarchy of food groups has shifted as well. Grains, once the largest and foundational part of the diet, are now the smallest segment at the bottom. Meanwhile, protein, dairy, healthy fats, fruits, and vegetables dominate the top of the pyramid.

Here’s a detailed look at RFK Jr.’s New Food Pyramid vs Old Food Pyramid and what it means for Americans, based on reporting from USA Today.

1. Focus Shift

Old Food Pyramid: Grains and carbs were the base, while proteins and fats were limited. The focus was on low-fat foods and staples like bread, pasta, and cereal.

RFK Jr.’s New Food Pyramid: Whole foods, protein, and healthy fats take center stage. Red meat, cheese, fruits, and vegetables are placed at the top, and refined grains play a smaller role.

2. Protein and Fats

Old: Saturated fats and animal proteins were discouraged. Fat was often treated as the main dietary enemy.

New: Protein and healthy fats, including saturated fats from meat and dairy, are now seen as essential. Federal nutrition leaders have officially declared an end to the “war on fat.”

3. Processed Foods

Old: Highly processed foods, added sugars, refined carbs, and chemical additives were allowed in moderation.

New: There’s a strong push to reduce ultra-processed foods, added sugars, and refined carbs. The emphasis is now on minimally processed, real foods.

4. Dairy

Old: Low-fat or skim dairy was recommended; full-fat options were generally discouraged.

New: Cheese and other dairy products are now at the top of the pyramid, allowing for full-fat milk in both general diets and school meals.

5. Sugar and Additives

Old: Sugar intake was suggested to be limited, but highly processed foods weren’t heavily flagged.

New: Added sugar is more strictly controlled, and processed foods are clearly marked as foods to minimize.

6. Overall Approach

Old: The diet centered on lowering fat, balancing calories, and relying heavily on plant-based staples such as grains.

New: The focus is on nutrient-rich, protein-heavy meals, healthy fats, whole foods, and cutting down refined carbohydrates. The guidelines aim to address obesity, chronic disease, and overall health.

How Does The New Pyramid Reflect Dietary Trends?

The new food pyramid, unveiled by Health Secretary Robert F. Kennedy Jr., signals a major shift in U.S. nutrition advice, emphasizing more protein and healthy fats while reducing grains. This change mirrors growing trends in American diets, where high-protein eating patterns and skepticism of high-carb, ultra-processed foods are increasingly common, according to USA Today.

Practically, protein and dairy, especially full-fat dairy, now dominate the pyramid, replacing the previous grain-heavy base. Saturated fats are no longer demonized; instead, they are considered healthy in moderation. Federal nutrition leaders have officially ended the “war on fat.” These updates also reflect recent survey findings showing that high-protein diets are a top trend in the U.S., with most Americans actively trying to increase their protein intake.

In a world where colourful vitamin gummies line supermarket shelves and powders promise instant wellness, many people are left wondering: should I really rely on supplements, or is eating well enough? Experts say the answer isn’t as simple as choosing one over the other.

Why Natural Foods Come First

Dr. Hari Kishan Boorugu, Consultant Physician and Diabetologist at Yashoda Hospitals, Hyderabad, emphasizes that “whole, natural foods should always come first.” Fruits, vegetables, whole grains, nuts, seeds, fish, yogurt, and healthy oils are packed with vitamins, minerals, fibre, antioxidants, and other plant compounds that work together to support digestion, immunity, heart health, and gut microbiome balance. “Supplements can’t fully replicate the synergy of nutrients found in real foods,” he adds.

Supplements, including tablets, capsules, powders, and even gummies—are meant to fill specific gaps. They are particularly useful for people with diagnosed deficiencies, dietary restrictions, pregnancy-related needs, ageing-related bone health, or medical conditions that affect nutrient absorption. But Dr. Boorugu cautions that “self-prescribing or overusing supplements can lead to nutrient imbalances or even toxicity, especially with vitamins A, D, E, and K.”

The Truth About Gummies

Gummies have become popular for their taste and convenience. Yet, experts warn that they are not a substitute for a balanced diet. “Many gummies contain added sugar and inconsistent doses of nutrients,” Dr. Boorugu explains. They can support your nutrition, but only when used responsibly and under medical guidance.

Supplements As Support, Not Shortcuts

Ruchika Rajbans, Founder & CEO of Arechar Group and creator of Vitagoli, says people often ask her, “Do I really need supplements? Isn’t eating well enough?” Her answer: ideally, yes—food should cover your nutritional needs—but real life often interferes. Stress, lack of sleep, overworking, and hormonal changes can affect how well your body absorbs nutrients.

“Supplements are gap fillers, not meal replacements,” Ruchika explains. “Whether in gummies, tablets, or powders, what matters is the quality of the ingredients and whether there’s evidence backing their benefits.” She adds that wellness isn’t about chasing trends or formats; it’s about understanding your body, reading labels carefully, and making informed choices.

Experts agree that balance is key. Prioritize a varied, nutrient-rich diet, maintain a healthy lifestyle, and use supplements only when necessary, preferably with medical guidance. Real nutrition starts on your plate—not in a capsule or gummy.