Deep research and expert guides on maintaining your visual health.
Hydration Habits: Water-Drinking Spikes and How to Sip Safely Staying properly hydrated is crucial for overall health – but surprisingly, the way we drink water can affect our eyes. In ophthalmology, a water-drinking test (WDT) has long been used to provoke and study intraocular pressure (IOP) changes in glaucoma patients. In this test, patients drink a large volume of water quickly (often ~1 lit...
Hydration means keeping the right amount of water in your body so it can work properly. Water is used in almost every process in the body: it helps control temperature, moves nutrients and oxygen to cells, cushions joints, and removes waste. Being well hydrated keeps your energy, thinking, digestion, and physical performance working smoothly. Hydration is not just about drinking water; it also includes fluids you get from food and other drinks, plus how much you lose through sweat, urine, and breathing. Both too little and too much fluid can cause problems: low fluid levels lead to dehydration, while drinking very large amounts rapidly can upset your salt balance. Common signs of not having enough water are dry mouth, dark urine, headaches, dizziness, and tiredness, while swelling, nausea, and confusion can be signs of overdoing it. Many factors change how much water you need, including your age, activity level, the climate, and health conditions or medicines you take. Simple ways to maintain good hydration include sipping fluids regularly, eating fruits and vegetables, and paying attention to your thirst and urine color. For most people, spreading fluid intake evenly through the day and adjusting for exercise or heat is safer and more effective than drinking a lot all at once.
