With long, dark evenings and cold, wet weather ahead, the winter months can leave many of us feeling down in the dumps. But from eating a balanced diet to doing some gentle exercise, there are simple measures you can take that will help see you through to spring with a smile. Around 1 in 5 people in the UK suffer from Seasonal Affective Disorder (SAD) during winter – more commonly known as the ‘winter blues’. Doctors think that a lack of sunlight can cause some people’s bodies to produce more of the sleep hormone, melatonin, making you feel tired and irritable throughout the day. Cold weather and short days can also make some people depressed, and cause them to want to shut themselves away indoors, and sometimes overeat.