Greater exposure to natural light will help with hormone production and help lift your spirits: Katie Mae (10) and Ellie (8) O’Sullivan walk in the winter sunshine at The Royal Hospital Kilmainham, Dublin, during an Avonmore event. Photograph: Marc O’Sullivan

In 2005, psychologist Cliff Arnall came up with a formula which looked at various factors, including winter weather conditions, post-Christmas money (...)

Tonya Couch is taken by authorities  to a waiting car after arriving at Los Angeles International Airport, Thursday, December 31st, 2015, in Los Angeles.  Photograph: Mark J Terrill/AP Photo

The mother of fugitive teenager Ethan Couch, known for using an “affluenza” defence in a fatal drunken-driving incident, has been returned to the US f(...)

Have you ever felt you needed to see a psychiatrist about your coffee-drinking habits? Thought not. But “caffeine-related disorders” are now includ(...)

Dr Stuart Neilson: ‘The book is also for people who might be wondering if they fit on the spectrum but are unsure.’ Photograph: Bryan O’Brien

The removal of Asperger’s syndrome from the most recent edition of DSM (Diagnostic and Statistical Manual of Mental Disorders) is a source of c(...)

Can trauma be good for us? Can a truly distressing and devastating life episode actually be a powerful force for growth? It does seem to be a c(...)