Light therapy compensates for your body's light deficiency, and can influence the hormone balance without the need for medication; spending approximately 1 hour a day in front of the daylight lamp for a week, can relieve the complaints associated with winter depression including: sleep disorders, extreme fatigue, Insomnia and carbohydrate cravings.Light therapy is believed to be effective in over 85% of cases, making the Beurer daylight lamp TL30 a great solution for those suffering with symptoms during the colder months. Turn it on with its simple one-button operation and enjoy the positive effects of light therapy.