Seasonal mood changes affect millions of people each year, especially during colder months when daylight becomes scarce. While many experience the winter blues, others may develop a more serious condition known as full SAD (Seasonal Affective Disorder).
Understanding the difference between these two is essential, particularly as seasonal depression risk continues to rise in regions with limited sunlight. From shifts in serotonin levels to the growing use of light therapy, this guide breaks down what happens when mild seasonal sadness turns into something more persistent.
