light therapy


: the treatment of medical or psychiatric conditions (such as seasonal affective disorder) by the controlled application of light

called also light treatment, phototherapy

Example Sentences

Recent Examples on the Web Edinbyrd said the family had already ordered a blanket and goggles to provide light therapy. Kerry Breen, CBS News, 8 Apr. 2023 Other helpful strategies include light therapy, spending time outdoors, eating a well-balanced diet, prioritizing movement, taking a vitamin D supplement, developing a strong social support system, managing stress, and planning to avoid emotional triggers. Nandi Howard, Essence, 24 Nov. 2022 Treatments can include skincare products, like exfoliators, and laser or light therapies. Susan Brickell, Health, 25 Mar. 2023 First on the spa menu for a reason, the blissful 120-minute treatment is comprised of a sea salt scrub and infrared light therapy (followed by a massage, of course). Claire Stern, ELLE, 15 Jan. 2023 But light therapy isn't without side effects. Cathy Cassata, Health, 3 Feb. 2023 Those seeking a transformative wellness experience will want to sign up for equine coaching (horse therapy) and treatments at Spa Aiyana, which range from bodywork incorporating the Ranch’s line of lavender products to sleep hypnosis to facials using LED light therapy. Anna Haines, Forbes, 26 Apr. 2022 What are the side effects of LED light therapy? Leah Prinzivalli, Allure, 7 Apr. 2022 With that, read on to discover a handful of skin-smoothing solutions—from plumping serums to light therapy devices. Kiana Murden, Vogue, 16 Mar. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'light therapy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1987, in the meaning defined above

Time Traveler
The first known use of light therapy was in 1987

Dictionary Entries Near light therapy

Cite this Entry

“Light therapy.” Dictionary, Merriam-Webster, Accessed 8 Jun. 2023.

Medical Definition

light therapy

: phototherapy
especially : the use of strong light (as of 10,000 lux intensity) for the treatment of depression and gloom (as in seasonal affective disorder)

called also light treatment

Last Updated: - Updated example sentences
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