An ambitious study into the impact of these techniques on 7,000 teenagers is the latest manifestation of their popularity. They can, some say, do for mental health what fluoride has done for teeth. What are Christians to make of this secular alternative to prayer? There is a buzz in the air about meditation. Hardly a week goes by without hearing how it can relieve stress and pain, help with depression or make one a more loving person. Now the Wellcome Trust has announced a £6.4 million study into the impact of mindfulness on the mental health of 7,000 teenagers, using neuroscientists and psychologists from the University of Oxford and University College London. A leading psychologist involved has claimed that spreading mindfulness to children could do for mental health what fluorid