During the winter, the days get shorter, and our contact with the sun becomes even more limited. Many of us leave for work just as the sun is rising and don’t return home until after it has set, not getting any sunlight at all. While the amount of sunlight we need varies widely depending on our skin tone, age, and other factors, this lack of exposure can inhibit the healthy production of essential hormones. This could disrupt our sleep schedules and contribute to conditions like insomnia, depression, and seasonal affective disorder. Bright light therapy lamps, also known as sad lamps or happy lights, provide an artificial alternative to natural light that can help solve this common problem.