The rest is us have to work and are somewhat stuck geographically. But, most people who go on vacations in the winter go to where the sun is. We automatically know that our bodies crave sun sometimes and people do pack up and go south a lot of the time. In fact, there are a lot more people living in sun filled areas than those in northern and bleaker locations. So actually - I think people do go south a great deal.
Some candy have a lot of carbohydrates - like chocolate.
Carbohydrates can be complex or simple. Sugars are simple carbohydrates and people with SAD do crave both complex and simple carbs. Obviously its best to eat wheat bread, rice beans, and pasta rather than chocolate and sugar - but people with SAD do get cravings for candy, cookies, cakes, all that stuff we shouldn't eat. However, if one tries to substitute simple carbohydrates for more complex one- the cravings for the sugars should lessen. It is not effective, or as effective, for the more severe depressions such as major depression.