Seasonal Affective Disorder

Seasonal Affective Disorder is a type of low mood associated with seasonal patterns. Common symptoms include a persistent low mood, irritability, sleepiness during the day, difficulty getting up in the morning (even with an increased amount of sleep) and carbohydrate cravings. 
 
We are unsure as to the specific cause of SAD; however, scientists believe that symptoms are largely related to lack of sunlight which in turn affects the production of hormones in our body. 

Production of melatonin and serotonin are controlled by a structure within the brain called the hypothalamus. The function of the hypothalamus is associated with levels of sunlight absorbed by the body. An imbalance in the production of these hormones can cause mood changes which are closely linked with the symptoms of Seasonal Affective Disorder. 

Serotonin is commonly known as the ‘happy hormone’, it is also responsible for controlling our appetite and sleep patterns. SAD sufferers commonly have a reduced amount of this hormone in their body, especially during winter months. Melatonin is the hormone responsible for controlling how sleepy we feel. It is believed that a lack of sunlight causes over-production of melatonin leaving us feeling more tired than usual and requiring more sleep. 

How can we treat SAD?

​Vitamin D is absorbed by the body when we are exposed to direct sunlight, therefore supplementing it is a simple and effective way to increase levels within the body when the weather is poor. Vitamin D has many important roles such as contributing to a healthy immune system, boosting our mood, and preventing bone disorders. 
 
Light therapy in the form of a ‘light box’ has been shown to boost natural serotonin levels and therefore help combat depression associated with SAD. 

New technology such as ‘wake up lights’ are a fantastic way to make early mornings a little less difficult too. ​

Lifestyle measures such as maintaining a healthy, balanced diet and taking plenty of exercise are essential to promote optimal function of our bodies. Good vitamin and mineral absorption from nutrient rich foods will ensure a healthy digestive system. There is a close relationship between the digestive system and hormones such as serotonin involved in Seasonal Affective Disorder. 
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Serotonin is commonly known as the ‘happy hormone’, it is also responsible for controlling our appetite and sleep patterns. SAD sufferers commonly have a reduced amount of this hormone in their body, especially during winter months. Melatonin is the hormone responsible for controlling how sleepy we feel. It is believed that a lack of sunlight causes over-production of melatonin leaving us feeling more tired than usual and requiring more sleep.