A reader asks:

 Wouldn’t more outside light benefit me as much as a light box could?

Answer:

Some people who live and work in dim environments may feel a mildly perceptible improvement with increased exposure to outdoor light. Most people who experience depression, however, require much stronger intensities to feel any benefits. Also, it is important to note that light therapy has been proven to be most therapeutic in the early morning when outdoor daylight often is unavailable.