In cases of SAD, what type of therapy can help reset melatonin levels?

• A. Physiotherapy
• B. Art therapy
• C. Light therapy
• D. Cognitive therapy

Answer: (C)

Light therapy is effective in cases of Seasonal Affective Disorder (SAD) because it helps to regulate melatonin levels in the body. SAD is characterized by depressive symptoms that occur at certain times of the year, typically during the fall and winter months when natural sunlight is limited. The lack of sunlight disrupts the body’s internal clock, or circadian rhythms, which in turn affects the production of melatonin, a hormone that regulates sleep-wake cycles.

When individuals undergoing light therapy are exposed to bright light that mimics natural sunlight, it can help recalibrate their circadian rhythms. This exposure suppresses melatonin production during the day, which can lead to improved mood and energy levels, alleviating some of the symptoms associated with SAD. Thus, light therapy acts to counteract the effects of reduced exposure to sunlight, facilitating a more normalized hormonal balance and improving overall psychological well-being.