Quick answer: A wake-up light can make getting up in the dark feel gentler. It is not a treatment for seasonal affective disorder (SAD) and isn't the same as a light therapy box. If your mood drops every winter, talk to a GP or doctor.
Winter blues or SAD?
Feeling more tired and slower to get going in winter is common. Seasonal affective disorder is different: the NHS describes it as a type of depression that usually happens in the winter and goes away in the summer. Symptoms can include low mood, losing interest in things you usually enjoy, feeling irritable, and being more tired and sleeping more than usual.
Light boxes vs wake-up lights
They're often lumped together, but they're different things:
- A light box (or "SAD lamp") is a very bright lamp you sit near for a set time, usually in the morning. The NHS notes it isn't usually available on the NHS because there isn't enough evidence to tell whether it works, but many people find it helps. It recommends speaking to a GP before trying one, as it may not suit some eye conditions or medicines.
- A wake-up light or dawn simulator gradually brightens your bedroom before your alarm, while you're still asleep. It's far less bright than a light box, and the goal is gentler waking, not therapy.
A phone app like Glow Alarm is a wake-up light, not a light box: your screen and flashlight brighten before your alarm. It can't deliver the brightness of a light box, and we'd never suggest it as a substitute for one.
What a wake-up light can help with
- Waking to light instead of a jolt of noise in a pitch-black room.
- A clearer "morning has started" cue on days when the sun rises after your alarm.
- Sticking to a consistent wake-up time, which matters more in winter.
What it can't do
- Treat depression, including SAD.
- Replace daylight: getting outside in the morning still matters.
- Replace advice from a doctor.
When to get help
See a GP or doctor if you think you might have SAD, or if low mood keeps coming back each winter and affects your daily life. Treatments include talking therapies, antidepressants and light therapy.
If you're struggling right now, you don't have to wait: in the UK call Samaritans free on 116 123; in the US call or text 988.
Further reading
- NHS: Seasonal affective disorder
- NHS: Treatment for SAD
- US National Institute of Mental Health: Seasonal affective disorder
- Sleep Foundation: Light therapy
For practical tips on getting up in the dark, read how dark your mornings will get and how to wake up on dark winter mornings.