17.10. Alternative therapies for depression and anxiety: Light therapy

17.10 Alternative Therapies for Depression and Anxiety: Light Therapy

Depression and anxiety are mental health conditions that affect millions of people around the world. While conventional therapies such as medication and psychotherapy are effective for many, some people may seek or need alternative therapies to complement or replace these approaches. One of these alternative therapies is light therapy, also known as phototherapy.

What is Light Therapy?

Light therapy involves exposure to artificial light that mimics natural sunlight. It is believed that this form of therapy can help regulate the body's circadian rhythms, which are the natural cycles of sleep and wakefulness. These rhythms can be disturbed in people with depression and anxiety, leading to problems such as insomnia and daytime fatigue.

How does Light Therapy work?

Light therapy is usually performed using a special light box that emits a very bright light. The person sits or works near the light box for a specific period of time each day, usually in the morning. The light from the soft box is significantly brighter than normal indoor light, but not as bright as direct sunlight.

Light therapy is thought to work by affecting brain chemicals linked to mood and sleep. It can help "reset" the body's internal clock, improving sleep, reducing anxiety, and relieving symptoms of depression.

Effectiveness of Light Therapy

Several studies have shown that light therapy can be effective in treating depression and anxiety. For example, a 2016 review published in the Journal of Affective Disorders found that light therapy may be an effective treatment for non-seasonal depression (a type of depression that occurs year-round, not just in the winter).

Another study, published in the Journal of Clinical Psychiatry in 2015, found that light therapy may be an effective treatment option for major depression. Additionally, some research suggests that light therapy may also be helpful for anxiety, particularly seasonal anxiety disorders.

Potential Side Effects and Risks

Although light therapy is generally considered safe, there can be some side effects. These may include headaches, nausea, irritability or agitation, and trouble sleeping (if light therapy is used late at night).

Also, light therapy may not be suitable for everyone. People with certain medical conditions, such as eye disease or sensitive skin, may be advised to avoid light therapy. It is always important to speak to a healthcare professional before starting any new therapy.

Conclusion

In summary, light therapy may be an effective alternative treatment option for depression and anxiety. While it is not a cure in and of itself, it can help alleviate symptoms of these conditions and improve quality of life. As always, it is important to speak with a healthcare professional before starting any new therapy, including light therapy.

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