What does drinking water do for your brain?
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.
If you're looking to detox your brain, prioritize getting plenty of sleep and exercising regularly. Both of these will bolster up your brain's built-in detoxification system.
The waste management system (called the glymphatic system) is a series of tubes that carry fresh fluid into the brain, mix the fresh fluid with the waste-filled fluid that surrounds the brain cells, and then flush the mix out of the brain and into the blood. This occurs primarily during deep sleep.
Getting enough water every day is important for your health. Drinking water can prevent dehydration, a condition that can cause unclear thinking, result in mood change, cause your body to overheat, and lead to constipation and kidney stones.
Therefore, if water levels are too low, our brain cells cannot function properly, leading to cognitive problems. The brains of dehydrated adults show signs of increased neuronal activation when performing cognitively engaging tasks, indicating that their brains are working harder than normal to complete the task [1].
"You may feel a difference within minutes of drinking water," explains Mary Stewart, R.D., L.D., the founder of Cultivate Nutrition in Dallas. "In fact, one study found that participants experienced an increase in caloric burn 24 minutes after drinking water."
- Develop Healthy Sleep Habits. Sleep is our body's method of resetting and replenishing itself—including (and especially) the brain. ...
- Eat a Healthy Diet. There's a deeper connection between the brain and the gut than most people realized. ...
- Meditation/Mindfulness Exercises. ...
- Get Outside. ...
- Exercise.
A good night's rest may literally clear the mind. Using mice, researchers showed for the first time that the space between brain cells may increase during sleep, allowing the brain to flush out toxins that build up during waking hours. These results suggest a new role for sleep in health and disease.
- Green, leafy vegetables. Leafy greens such as kale, spinach, collards, and broccoli are rich in brain-healthy nutrients like vitamin K, lutein, folate, and beta carotene. ...
- Fatty fish. ...
- Berries. ...
- Tea and coffee. ...
- Walnuts.
There is usually headache, confusion, and vomiting followed by a decline in consciousness, possibly leading to coma. Focal signs and seizures can occur but are uncommon. Cerebral edema can progress to cause herniation and brain death.
What causes toxins to build up in the brain?
Hepatic encephalopathy is a nervous system disorder brought on by severe liver disease. When the liver doesn't work properly, toxins build up in the blood. These toxins can travel to the brain and affect brain function.
- Fasting for 1–3 days.
- Drinking fresh fruit and vegetable juices, smoothies, water, and tea.
- Drinking only specific liquids, such as salted water or lemon juice.
- Eliminating foods high in heavy metals, contaminants, and allergens.
- Taking supplements or herbs.

Chronic, excessive exposure, and accumulation of neurotoxic agents such as heavy metals (lead, mercury, cadmium), mefloquine (Lariam), and food additives such as monosodium glutamate and aspartame cause neurotoxicity and brain damage.