Feeling down is something that we all have to deal with at times. This is especially true in winter, where sunlight is in short supply and seasonal affective disorder (SAD) can creep in.

The modern lifestyle often doesn't help us when it comes to keeping happy. There are many things that can cause low mood, one of which is dehydration or not enough water. How, you might ask?

In this article, we'll cover the many scientific reasons why a lack of water could be the root of mood and cognition issues. But before we dive into how water keeps us happy, let's discuss the science bit...