Sunday the clocks fell back. By Tuesday it was dark when you left work, and something in you dimmed with the light.
You're sleeping more and resting less. The couch has a gravity it didn't have in July. Plans with friends feel like chores, and carbohydrates are calling your name with unusual persistence.
Is this just winter? Or is it something more? The honest answer is that it might be either, and the difference matters.
The Winter Blues: Weather for the Soul
Most of us feel the turn of the season. Shorter days, colder mornings and less time outdoors nudge mood downward. We hibernate a little. We feel a little flat.
The winter blues are like weather: real, unpleasant, but passing. You still laugh at the right moments. You still show up for work and for the people you love. A good weekend or a sunny afternoon can lift the fog for a while.
Seasonal Affective Disorder: When the Weather Becomes a Climate
Seasonal affective disorder (SAD) is different. The National Institute of Mental Health (NIMH) describes it as "a type of depression characterized by its recurrent seasonal pattern," with symptoms lasting about four to five months a year. In most cases it begins in late fall or early winter and lifts in spring and summer.
According to NIMH:
SAD occurs much more often in women than in men.
It's more common in people who live farther north, where winter days are shortest.
In most cases, it begins in young adulthood.
To be diagnosed, the depressive episodes must follow the seasonal pattern for at least two consecutive years.
Winter-pattern SAD carries the core symptoms of depression (persistent low mood, loss of interest, hopelessness, low energy, trouble concentrating) plus a few signature ones NIMH highlights:
Oversleeping, and still waking up tired
Overeating, particularly craving carbohydrates, leading to weight gain
Social withdrawal, the feeling of wanting to hibernate
The key word is pattern. If you can look back and see the same descent arriving with the same season, year after year, it's worth taking seriously.
Why Darkness Gets Into Us
We are embodied creatures. Our sleep, energy and mood are tuned to the rhythm of light and dark. NIMH notes that people with winter-pattern SAD tend to have reduced levels of serotonin, a brain chemical that helps regulate mood, and produce too much melatonin, which increases sleepiness. Low vitamin D may make those problems worse.
There's an old wisdom in the body's signal to slow down. Winter has always been a season of rest. The trouble is that modern life doesn't slow down with the sun, so we end up exhausted and expected to perform, pressing the gas while our bodies press the brake.
What Helps
The good news is that seasonal depression is very treatable. NIMH names four main categories of treatment, which can be used alone or together:
Light therapy: sitting in front of a bright light box, usually first thing in the morning, from fall into spring. NIMH notes the boxes are about 20 times brighter than ordinary indoor light. Talk with a medical provider first, especially if you have an eye condition or take medication that increases sensitivity to light.
Cognitive behavioral therapy (CBT): a version adapted for SAD targets season-specific thoughts ("Winter is unbearable," "I can't do anything until spring") and gently rebuilds activity and connection. When researchers compared CBT directly with light therapy, NIMH reports both worked equally well, and a study that followed patients for two winters found CBT's benefits seemed to last longer.
Antidepressant medication, prescribed by a medical provider, for some people.
Vitamin D, for some people with winter-pattern SAD, with a provider's guidance.
Alongside these, small acts of resistance matter: a morning walk in whatever daylight there is, one standing plan with a friend, and a regular sleep schedule even when your body begs for more.
Don't Wait for Spring
Many people with seasonal depression tell themselves they'll just get through it. But four or five months is a long time to white-knuckle your way through your own life, and the people around you feel that absence too.
That's why the timing matters. The earlier in the season you get support, the more of winter you get back. In therapy, we look at the whole picture: the seasonal rhythm, and also what the darkness tends to stir up in you. Sometimes winter simply amplifies a heaviness that was already there. We use CBT and acceptance and commitment therapy (ACT) to help you stay engaged with what matters, even in the dark months.
Take the First Step This Week
You don't need to be sure it's SAD before you reach out. Sorting that out is what the first conversation is for.
Book a free 15-minute consultation with Kelli or me.
Tell us how the last few winters have gone. We'll help you sort out whether it's the blues or something more.
Leave with a plan for this season, whether that's therapy with us, a conversation with your doctor about light therapy or medication, or both.
Learn more about how we treat anxiety and depression, book your free consultation, or call (720) 669-4716. We see clients in person in Denver and online across Colorado and Florida, and I also see clients online in Oklahoma.
If you're having thoughts of ending your life, please don't wait. Call or text 988 to reach the Suicide & Crisis Lifeline.
The days will get longer again. You don't have to wait for them to start feeling better.
Source: Seasonal Affective Disorder, National Institute of Mental Health
