Light therapy lamps are often held up as the answer to seasonal affective disorder (SAD). But how do they work? And what do you need to know before you invest in one? We asked an expert to explain ...

So much so that it actually has a name: seasonal affective disorder (SAD ... As it is linked to changes in seasons, these lamps work by emitting light that is much brighter than that of standard ...

After discussing my symptoms with a friend, they suggested looking into a SAD lamp. The electric boxes work by emitting ...

Seasonal affective disorder affects 0.5-3% of the world’s population which is a substantial number of people suffering when daylight hours reduce. Symptoms of SAD consist of fatigue, tiredness ...