Can drinking water improve thinking?
Drinking water can improve one's brain health by simply increasing blood flow and oxygen to the brain – which, in turn, improves concentration and cognition (supporting memory function) and helps balance moods and emotions, reducing stress and headaches.
Water helps your brain cells communicate with each other, clears out toxins and waste that impairs brain function, and carries nutrients to your brain. This all falls apart if your fluid levels drop. Staying hydrated has been linked to: Faster decision making and improved performance on cognitive tests.
Prolonged dehydration causes brain cells to shrink in size and mass, a condition common in many elderly who have been dehydrated for years. Lack of mental clarity, sometimes referred to as “brain fog.”
Severe dehydration has been shown to cause cognitive deficits such as short-term memory and visual perceptual abilities as well as mood disturbance, whereas water consumption can improve cognitive performance, particularly visual attention and mood.
Drinking Clean Water Helps Keep Brain Fog Away
From boosting happiness and mood to enhancing concentration, focus, and memory, proper hydration helps us think clearly and feel great.
So why do we need water? Well, water helps your brain cells communicate with each other, which is important when you go about your day. Water also clears out toxins and waste that impair brain function. Not to mention, it also carries nutrients to your brain to keep your brain healthy.
Losing just 2 percent of the water in your body (mild dehydration), can impair your cognitive performance, attentiveness, short-term memory and may affect decision-making ability. These symptoms, which affect your ability to think, are often collectively described as “brain fog”, a non-medical, colloquial term.
Severe dehydration can lead to confusion, weakness, urinary tract infections, pneumonia, bedsores in bedridden patients, and other serious conditions.
Brain fog is characterized by confusion, forgetfulness, and a lack of focus and mental clarity. This can be caused by overworking, lack of sleep, stress, and spending too much time on the computer.
As much as dehydration impacts your ability to think clearly, it can also make it very difficult to remember things. That's why it's so important to stay hydrated – it actually improves your memory! Various studies have shown that mild-to-moderate levels of dehydration can impair short-term memory.
Does water Help confusion?
Losing body water can lead to confusion and disorientation and signify severe dehydration.
And water plays an important role in providing that energy to the brain. Our brain just works better when it is well-hydrated. Well-hydrated brains function faster, with more clarity and greater creativity. But the brain has no way to store water, so it is important to maintain hydration throughout the day.

Lower risk of anxiety and depression:
A study conducted in 2018 demonstrated that people who drank less water had a higher risk of depression and anxiety. On the other hand, individuals who drank a sufficient amount of water daily were more likely to be mentally healthy and happy.