According to the research, Light therapy is considered a first-line treatment for a client with seasonal affective disorder (SAD).
<h3>What is light therapy?</h3>
It is the application of sunlight for therapeutic and preventive purposes, it helps to increase body temperature (improving metabolic and trophic processes).
It is used as treatment for clients with SAD to regulate the circadian cycle and biological processes, such as melatonin secretion.
Therefore, we can conclude that according to the research, Light therapy is considered a first-line treatment for a client with seasonal affective disorder (SAD).
Learn more about Light therapy here: brainly.com/question/12368231
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