Writer Kim Jin-ho's Water and Health Stories (71) Winter's Paradox: The Silent Cry of Dehydrated Cells Without Thirst

It is a season when cold northwest winds make us button up our coats. As temperatures drop, our bodies constrict blood vessels to maintain body temperature and reduce sweat secretion. Paradoxically, this natural physiological response often becomes a fatal "metabolic trap" for modern people. Since we do not sweat and feel no thirst, we stop drinking water, and the dry indoor air silently strips moisture from our skin and respiratory system.

In winter, we may not feel thirsty, but our blood vessels and cells are experiencing thirst more intensely than ever. Particularly when aligned with the "diabetes crisis" striking South Korea, this chronic winter dehydration can become a trigger that damages the kidneys.

In today's column, I wish to re-examine why we are sicker in the era of advanced medicine, and the scientific value of "water" as an answer to this question.

1. Poverty Amid Abundance: Medicine Has Progressed, So Why Are Patients Increasing?

South Korea's medical care in the 21st century is among the world's best. However, the "Diabetes Fact Sheet 2024" recently released by the Korean Diabetes Association reveals a shocking reality. One out of every six adults over 30 is a diabetes patient, and if prediabetes is included, more than half of all adults have warning lights on for blood glucose control. Even more alarming is the explosive increase in "young diabetes" among those in their 30s.

This phenomenon suggests that modern medicine's drug treatment alone cannot overcome lifestyle diseases. While we may be able to lower blood glucose levels with medication, we cannot restore the disrupted physiological homeostasis within our bodies through drugs alone.

Particularly in winter, blood glucose rises due to reduced activity and overeating, while fluid intake decreases, making the blood thicker and metabolic waste accumulating without being excreted. This is the beginning of "metabolic contamination" in which our bodies become ill.

2. High Blood Glucose, the "Fear of Oxidation" That Rusts Cells

So what happens to our bodies when water is lacking and blood glucose is high?

Research by Professor Lee Gyu-jae's team at Yonsei University Wonju College of Medicine clearly demonstrates this process. Excess glucose in blood vessels causes mitochondria within cells to become overloaded, releasing massive amounts of reactive oxygen species (ROS).

In simple terms, it is like pouring too much fuel (glucose) into an engine (mitochondria), causing incomplete combustion, and the resulting soot (reactive oxygen species) damaging the engine itself. This reactive oxygen attacks kidney cells that act as the water purification filter in our bodies, causing them to "rust" (oxidize). The biggest reason why diabetic patients progress to end-stage renal failure requiring dialysis is precisely this "oxidative stress."

What is needed at this point is an "antioxidant hydration" strategy that goes beyond simple fluid replacement.

3. Water, Becoming a "Metabolic Therapeutic Agent" Beyond Simple H2O

Recently, the integrative medicine community has elevated water to a supplementary means of disease treatment. Particularly noteworthy is the clinical utility of "magnesium alkaline water." According to a paper published by Yonsei University researchers in an international academic journal (MDPI Processes), alkaline water enriched with magnesium minerals generated by a MineralMaker water bottle significantly preserves the survival rate of kidney cells exposed to high blood glucose environments.

The essence of this water is twofold.

First, the supply of "magnesium."

Modern people, especially diabetic patients, are in a state of chronic magnesium deficiency. Magnesium is an essential mineral that acts as a "key" allowing insulin to open cell doors and accept glucose. Consuming ionized magnesium through water is the most fundamental way to improve insulin resistance.

Second, "reducing power."

Active hydrogen contained in alkaline reduced water combines with toxic reactive oxygen species in the body and reduces them to water for excretion. In other words, it acts as a "firefighter" washing away the "oxidative rust" accumulated in cells due to high blood glucose and calming inflammation.

4. Winter Hydration Strategy for Cancer Survivors and Chronic Disease Patients

This hydration strategy is not only effective for diabetic patients. As cancer survivors are rapidly increasing due to advances in cancer treatment technology, the foundation of "detoxification" to expel toxic byproducts remaining in the body after cancer treatment and prevent recurrence is also water.

Adequate alkaline fluid intake can help reduce kidney burden by alkalinizing urine, prevent uric acid stones, and improve cancer-related fatigue.

So how should we drink water this winter?

First, do not wait for thirst.

Thirst is the brain's belated signal that dehydration is already underway. You must drink "consciously and habitually" on a set schedule.

Second, drink "water with living minerals."

Rather than the merely clean water from RO purifiers, you should consume mineral-rich water such as magnesium to awaken metabolic function. Using functional water bottles like MineralMaker to drink water with antioxidant properties can also be a wise alternative.

Third, drink warm water, slowly.

Cold water can lower body temperature and reduce immunity. The secret to increasing absorption is to drink approximately 1.5 to 2 liters of lukewarm water similar to body temperature throughout the day, sipping it slowly as if chewing.

In Closing: The Easiest and Greatest Habit That Saves My Life

Of course, there are precautions to note. Patients with severely progressing chronic renal failure (such as dialysis patients) have reduced ability to excrete potassium and magnesium, so they must consult with their physician to adjust fluid intake.

However, for the majority of modern people, those in prediabetes stages, and those with early chronic diseases, water is the finest natural remedy with no side effects.

Winter is a season when vitality shrinks. Yet deep beneath the soil, roots drink water in preparation for spring. Our bodies are the same. This winter as we enter 2026, what we should prioritize before advanced nutritional supplements or expensive medicinal tonics is a glass of water on my desk.

Within that transparent glass lies the vitality to restore damaged metabolic systems, purify thickened blood, and revive exhausted cells. My cells are now sending out distress signals. Responding to those signals is the beginning of healthy winter survival.