Mood Cures for the Winter Blues: Vitamin D and Seasonal Affect Disorder SAD With the falling back of the clocks, the daylight hours shorten and the chilly temperatures roll in. As the days darken, you might also notice that your mood tinting gloomy. The concept of behaviour, psychology, cravings, weight changes, sleep, and energy having seasonal rhythms has been observed for centuries even documented by the father of medicine, Hippocrates. For many of us, feeling the general winter blues, otherwise known as SAD,  is normal, however others can develop more serious depression through these colder months. How do you know [...]