Insight: Research renaissance offers new ways out of depression

By Kate Kelland, Health and Science Correspondent LONDON (Reuters)- As Susan sits chatting to a nurse in a London clinic, a light tapping sound by her head signals that parts of her brain are being zapped by thousands of tiny electro-magnetic pulses from a machine plugged into the wall. The 50 year-old doctor is among growing ranks of people with so-called treatment-resistant depression, and after 21 years fighting a disorder that destroyed her ability to work and at times made her want to "opt out of life", this is a last resort. …