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Bright light therapy: Seasonal affective disorder and beyond. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. The exact amount of time it takes to see a reduction in SAD symptoms may vary, but research shows that most people begin to experience symptom relief within 7 days of beginning treatment. How long does it take for light therapy lamps to start working? If a person has concerns that they have a vitamin D deficiency, they should speak with their doctor as soon as possible. However, future research is necessary to confirm the findings. Do SAD lamps increase your vitamin D levels?Īccording to a 2017 study, lamps that produce UVB light may help a person’s body produce vitamin D.
Can SAD lamps damage your skin or eyes?Ī 2017 review recommends that people who take medications that increase their sensitivity to sunlight or who have medical conditions that have the same effect exercise caution when using SAD lamps.Īdditionally, those with cataracts, retinopathy, or glaucoma should only use a SAD lamp under the care of an ophthalmologist.
Anyone considering using a SAD lamp should first speak with a doctor or healthcare professional.īelow we look at some common questions relating to SAD lamps. However, for people using a SAD lamp to help their skin make vitamin D, UVB light is essential.
People with light sensitivity, bipolar disorder, diabetes, or eye conditions should avoid having the treatment.Įxperts advise individuals who wish to try light therapy to use only SAD lamps that emit fluorescent light with no UV wavelengths, which can damage the skin and lead to skin cancer. There is some evidence to support the benefits of light therapy, but scientists are not yet sure whether it works.Īdditionally, this type of therapy may not suit everyone. For example, doctors might recommend that a person with SAD sit by a lightbox that provides 10,000 lux for 30 minutes each day as soon as possible after waking up. These lamps typically show measurements in lux, which refers to the lamp’s luminance level. SAD lamps, also known as sun lamps or light boxes, work by imitating sunlight. The skin also uses sunlight to make vitamin D.
Some examples are serotonin, which plays a role in mood, and melatonin, which helps with sleep patterns. Sunlight helps the brain produce hormones that the body needs to function. These govern how individuals feel and when they go to sleep and wake up. It affects the body’s natural daily cycles, also known as circadian rhythms.