Does a SAD lamp actually do anything?

Winter mornings are dark, and some people feel it more than others: low energy, low mood, sleeping too much. That's the pattern light therapy was made for.

The idea is simple. A 10,000 lux lamp mimics bright morning daylight. You sit near it for 20 to 30 minutes in the morning, not staring at it, just nearby while you have coffee or get ready. The bright light is thought to cause a chemical change in the brain that lifts mood and eases symptoms like tiredness and sleeping too much.

What the research says: bright light therapy is considered an effective treatment for SAD, and research suggests around half of people who use a light box have good results with symptom reduction. Let's be blunt, though: this is not a cure. It won't fix depression and it won't fix your life, and anyone who tells you a lamp does that is selling you something. Mayo Clinic says the same thing directly: light therapy probably won't cure seasonal affective disorder. The evidence is real but the trials are small — a Cochrane review found the evidence for light therapy preventing SAD to be limited, with very low-quality evidence from a single small study.

What to look for: 10,000 lux, UV-free, big enough that you don't have to sit with your face pressed against it. That's it. Fancy features don't matter much.

One caution before you buy any lamp: talk to a clinician first if you have bipolar disorder, an eye condition, or you take medication that makes you sensitive to light.

If dark mornings drag you down, it's a cheap thing to try before winter really sets in. We sell one. Just a Lamp, $39.99. No miracle promised.

This article is for general information only and is not medical advice. Talk to your doctor or another healthcare professional before starting light therapy, especially if you have a medical condition or take medication.

Sources: Mayo Clinic, 'Seasonal affective disorder treatment: Choosing a light box' (https://www.mayoclinic.org/diseases-conditions/seasonal-affective-disorder/in-depth/seasonal-affective-disorder-treatment/art-20048298); Mayo Clinic Health System, 'All about seasonal affective disorder' (https://sncs-prod-external.mayo.edu/hometown-health/speaking-of-health/seasonal-affective-disorder-more); Nussbaumer-Streit B, et al., 'Light therapy for preventing seasonal affective disorder,' Cochrane Database of Systematic Reviews, 2019, CD011269, DOI: 10.1002/14651858.CD011269.pub3.