article_snippet: it’s estimated that two million Britons suffer from Seasonal Affective Disorder (SAD), which is caused by a lack of sunlight - and up to three times more women than men appear to be affected .
article_snippet: It’s estimated that 2 million Britons suffer from Seasonal Affective Disorder (SAD), caused by a lack of sunlight, with up to three times more women than men affected.
article_snippet: Symptoms include low-level depression, lack of energy and a loss of enthusiasm for life.
highlights_snippet: An estimated 2 million Britons suffer from Seasonal Affective Disorder .
  
highlights_snippet: SAD is caused by a lack of sunlight and women are more affected than men .
  