As seasons shift, so does the amount of sunlight, which affects your circadian rhythm, the body’s internal biological clock that governs certain brain wave activity and hormone production. In some people, the changing of mood-related chemicals can cause depression. Bright light therapy has proven to be an effective treatment for season affective disorder (SAD), also known as the winter blues. The following light treatments are commonly used to treat SAD.
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great article , thanks. I just read that home made light boxes – with bulbs that we buy and put in a regular lamp, can have an effect on cataracts – not good. Little FYI – tis the season! thanks therese!