Lost Connections delves into why so many people struggle with depression, and the reasons why improving one's relationships and environment can often be a more effective tonic than focusing solely on medication.

You don't have to look very far to find someone who suffers from depression.

The World Health Organization estimates a whopping 300 million people suffer from depression worldwide. And those numbers only seem to be rising.

There are many theories, but we don't know precisely why depression occurs, or why it's becoming more prevalent.

For some years, the most commonly accepted explanation is that it's something wrong with the individual's brain chemistry. But experts are now realizing that this isn't the whole picture.

In Lost Connections: Why You're Depressed and How to Find Hope, author and journalist Johann Hari explores the lesser-known side of depression and anxiety.

He explores the various ways those suffering from depression manage their symptoms without medication. He uncovers the truth that depression isn't solely a biological ailment — it can be greatly exacerbated by environmental and psychological factors too.

His thoroughly researched and fascinating argument is that the key to treating depression long-term is in re-establishing strong connections with our own lives.