How Hydration Affects Your Mental Health

September 14, 2020

Water is essential for your body to carry out its daily functions—from digestion to breathing.1 But your physical health is only part of the equation. Mental health also affects everything you do and feel. So, if water is essential for daily functions…does that go for mental health, too?

Your Brain and Water

The human brain is 75 percent water. It’s not surprising that when you deprive it of proper hydration, you start to see some unfavorable side effects. When the brain becomes dehydrated, blood circulation slows down significantly, which decreases the amount of oxygen traveling through the body, including the brain.1,2 This can cause fatigue, headaches, what we know as “brain fog,” or a lack of focus, and more. In fact, extreme dehydration can even cause dementia-like symptoms.3

Drinking Water at Work

Water and Your Mental Health

Since dehydration starves our brain of oxygen, it makes all the brain’s essential functions even more difficult. That’s why hydration is crucial. It gives us the best chance at thinking clearly and keeping focus. It’s the foundation of good mental health.

In 2018, a study published in the World Journal of Psychiatry substantiated the claim that better hydration directly impacts your mental health. They found that:

“In a sample of 3,327 adults, drinking five or more glasses of plain water daily was associated with a lower risk of depression. For those who drank two or fewer glasses of water, their risk for depression was increased (73% increase for men and 54% increase for women).”4

Choosing Primo is A No-Brainer

If your brain isn’t functioning properly, you probably aren’t either. So put hydration at the forefront of your day to set yourself up for success. Primo Water can help you do just that!

Primo Water undergoes a 5-step Reverse Osmosis (RO) purification process that eliminates harmful microorganisms, heavy metals, trace pharmaceuticals and more. Because not only do we value hydration in its most basic form, but we believe in hydrating with safer water.

And we found that bulk water users consume as much as 25% more water than non-bulk water users. That’s great news for your brain…and your body.

Your brain is pretty awesome. Primo Water wants to make sure you’re fueling it with better water.


1Harvard T.H. Chan School of Public Health. (2021, July 6). Water. The Nutrition Source. Retrieved from 

2Harvard Medical School. (2022, May 15). How Much Water Should You Drink? Harvard Health Publishing. Retrieved from 

3Mayo Foundation for Medical Education and Research. (2021, June 17). Dementia. Mayo Clinic. Retrieved from 

4Haghighatdoost, F., Feizi, A., Esmaillzadeh, A., Rashidi-Pourfard, N., Keshteli, A. H., Roohafza, H., & Adibi, P. (2018). Drinking plain water is associated with decreased risk of depression and anxiety in adults: Results from a large cross-sectional study. World Journal of Psychiatry, 8(3), 88–96.