Seasonal Affective Disorder (SAD) is more than just the 'winter blues'; it is a real disorder that affects individuals due to changes in light exposure, particularly in regions further from the equator. Dr. Alicia Kaplan and Dr. Samuel Akaku explain that SAD impacts circadian rhythms, leading to symptoms such as sadness, decreased energy, and reduced interest in activities. According to the American Psychiatric Association, nearly 40% of Americans experience mood declines in winter, with 25% feeling depressed. Treatment options include therapy, medication, and light therapy, which has shown effectiveness in treating both seasonal and nonseasonal depression. Symptoms typically recur seasonally and last for four to six months. The National Institute of Mental Health advises those with persistent mood issues to seek help.