Overcoming Depression For Dummies, UK EditionUp to 1 in 5 people in the UK suffer from diagnosable depression (bbc. co. uk) that's approximately 12 million people. Depression takes multiple forms, including seasonal affective disorder, bipolar disorder, and postnatal depression. Research by the BBC claims that up to 75% of sufferers are not receiving any form of professional medication or therapy, which strongly suggests that self help is often a preferred course of action. Overcoming Depression