Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxic > Health-in-Motion Updated 02 March 2016 Light therapy for depression If lack of sunlight contributes to seasonal affective disorder, then getting more light may reverse it. Bright light works by stimulating cells in the retina that connect to the hypothalamus, a part of the brain that helps control circadian rhythms. Activating the hypothalamus at a certain time every day can restore a normal circadian rhythm and thus banish seasonal symptoms. Light therapy entails sitting close to a special “light box” for 30 minutes a day, usually as soon after waking up as possible. These boxes provide 10,000 lux (“lux” is a measure of light intensity). That’s about 100 times brighter than usual indoor lighting; a bright sunny day is 50,000 lux or more. You need to have your eyes open, but don’t look at the light. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Fitness Four-time Olympian Hendrick Ramaala’s advice on breaking limits Diet and nutrition 5 easy, healthier recipes for your Braai Day feast Fitness Want to get stronger? Stop ignoring these muscles in your workout Diet and nutrition You won’t believe these 6 health benefits of homemade chocolate cake Diet and nutrition Breakfast vs. dinner: Which meal is mightier? Lifestyle Do these sleep myths really work to get you to bed? From our sponsors Dementia and Incontinence: what you need to know Tell-tale signs you need a mattress upgrade Keen to win a R2 000 voucher? Good health begins in your gastrointestinal tract Live healthier Looking younger » Can maple leaves help you look younger? New research has found that maple leaf extract can help you look years younger. Killer foods » Wild mushrooms a 'silent killer' Health practitioners are warning people to stay away from wild mushrooms.