SAD most commonly affects people in winter, when the lower light levels and cold weather can wreak havoc on the important hormone regulatory systems associated with mood. SAD sufferers experience depression, lethargy and a lack of motivation. Often this leads to consuming carbohydrates and sugars in a bid to pick up energy levels and satisfy cravings. Though initially satiating, consumption of these foods can lead to undesired weight gain and the experience of a ‘sugar crash’, neither of which ultimately improves mood. A nutritional therapist can help formulate a healthy eating plan which is sustainable and realistic, thus supporting SAD sufferers through the winter months.