Prof Anna Wirz-Justice: Why winter makes us SAD and how light can help rnz.co.nz - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from rnz.co.nz Daily Mail and Mail on Sunday newspapers.
Despair in the winter months can point to a serious condition known as seasonal affective disorder, or SAD. Experts recommend light boxes, earlier wake-up times and therapy.