As daylight hours shrink and temperatures drop, it's normal to feel a little less energetic. But for some people, this shift brings on something more significant than a passing case of the "winter blues." Seasonal Affective Disorder (SAD) is a recognized subtype of depression, and understanding the difference can be the first step toward feeling better.

What Is Seasonal Affective Disorder?
SAD is classified in the DSM-5-TR as major depressive disorder with a seasonal pattern, not a separate diagnosis. Most people experience the winter pattern, with symptoms starting in late fall and lifting by spring, though a smaller number experience the reverse pattern in spring or summer. To meet clinical criteria, these episodes need to recur during the same season for at least two consecutive years and outnumber any depressive episodes that happen at other times of year.

Signs to Watch For
According to guidance from the American Psychiatric Association and the National Institute of Mental Health, common symptoms include:
●Persistent low mood or a sense of hopelessness
●Loss of interest in activities you normally enjoy
●Low energy and fatigue, even after plenty of sleep
●Oversleeping or trouble getting out of bed
●Changes in eating habits and often weight
●Difficulty concentrating or making decisions
●Withdrawing from friends, family, or social activities
●In more severe cases, thoughts of death or suicide

Summer-pattern SAD looks different and tends to involve poor appetite, weight loss, trouble sleeping, and agitation or anxiety rather than the low energy seen in winter-pattern SAD. The National Institute of Mental Health notes that these symptoms can be just as severe and disruptive as any other episode of major depression.

​Psychologist Kelly Rohan, PhD, a leading SAD researcher affiliated with the American Psychological Association, notes that the symptoms of SAD are clinically identical to non-seasonal depression. What sets it apart is simply the seasonal timing.

Why It Happens
Researchers don't have a single, fully settled explanation, but reduced sunlight appears to play a central role. The National Institute of Mental Health points to a few contributing factors: disrupted circadian rhythms, shifts in serotonin levels, and changes in melatonin production, all of which affect mood, sleep, and energy. SAD is more common at higher latitudes, where winter daylight hours are shortest, and tends to affect younger adults and women at higher rates.

When to Reach Out for Support
​Feeling a little more sluggish in winter doesn't necessarily mean you have SAD. The key distinction is impact: if low mood, fatigue, or changes in sleep and appetite are interfering with your work, relationships, or day-to-day functioning, it's worth talking to a mental health professional.

The encouraging news is that SAD is treatable. NIMH lists light therapy, medication, and in some cases vitamin D supplementation among the approaches that can help in combination with therapy. A therapist can help identify what's driving your symptoms and build a plan tailored to your needs, so the changing seasons don't have to mean months of just getting through it.

If you've noticed this pattern in yourself, reaching out for an evaluation is a reasonable and often relieving next step, not a last resort. If this sounds familiar, I'd love to help — reach out anytime to schedule a consultation and start feeling like yourself again, no matter the season.

Sources
●American Psychiatric Association, "Seasonal Affective Disorder (SAD)," psychiatry.org
●American Psychological Association, interview with Kelly Rohan, PhD, apa.org
●National Institute of Mental Health, "Seasonal Affective Disorder," nimh.nih.gov

 
If you’ve ever had a racing heart before a hard conversation, a stomachache before a big decision, or trouble breathing when you’re overwhelmed, you already know: anxiety doesn’t just live in your thoughts. It lives in your body, too. This isn’t a character flaw or “overreacting.” It’s how humans are wired.

Your Body Reacts Before Your Mind Catches Up
Dr. Stephen Porges, a leading researcher on the nervous system, developed what’s known as Polyvagal Theory to explain how our bodies are constantly — and mostly unconsciously — scanning the environment for cues of safety or danger. He calls this automatic scanning process neuroception. Long before you consciously think “I’m anxious,” your nervous system has often already shifted into alarm mode: faster heartbeat, tense muscles, shallow breathing, a knot in your stomach. This is also why telling yourself (or being told) to “just calm down” rarely works. Your body isn’t responding to logic in that moment — it’s responding to a felt sense of threat, whether or not real danger is present. Real relief usually requires helping the body feel safe again, not just changing your thoughts.

Your Nervous System Has a Few Default Settings
Porges’s theory describes a few states your nervous system can settle into:

• Calm and connected — you feel safe, present, and able to think clearly.
• Fight or flight — your body senses a threat and mobilizes energy to act, showing up as anxiety, irritability, or restlessness.
• Shutdown — when a threat feels too big to fight or flee, the body can go into a kind of freeze or numbness instead.

Anxiety often means your nervous system has gotten stuck in that second state — primed for danger — even when your day-to-day life doesn’t call for it. Over time, this can start to feel like your baseline, rather than a passing reaction.

Why This Matters for Healing
Understanding anxiety this way changes how we think about relief. If anxiety were purely a “thinking” problem, reasoning it away would work more often than it does. But because anxiety is rooted in the nervous system, healing usually involves sending your body real, felt signals of safety — through breath, movement, a steady relationship, or a calm environment — not just new information.

This is also why the relationship with a therapist can matter so much. A big part of nervous-system-informed therapy is co-regulation: being in the presence of someone whose calm, steady presence helps your own nervous system learn, gradually, that it’s safe to settle.

The Takeaway
Anxiety is a whole-body experience, not just a thinking problem. Your body isn’t betraying you or overreacting for no reason — it’s trying to protect you, sometimes based on outdated information. The good news is that a nervous system that has learned to feel unsafe can also learn to feel safe again. If any of this resonates with you, you don’t have to sort it out alone. I’d be glad to talk with you about what support could look like.

Sources & Further Reading
Porges, S. W. (2011). The Polyvagal Theory: Neurophysiological Foundations of
Emotions, Attachment, Communication, and Self-Regulation. W. W. Norton & Company.
Porges, S. W. (2017). The Pocket Guide to the Polyvagal Theory: The Transformative
Power of Feeling Safe. W. W. Norton & Company.
Dana, D. (2018). The Polyvagal Theory in Therapy: Engaging the Rhythm of Regulation. W. W. Norton & Company.

​If you and your partner want sex at different frequencies, you're not broken, and neither is your relationship. Desire discrepancy is one of the most common issues couples bring into therapy — far more common than most people realize, because almost no one talks about it until it becomes a source of shame or conflict.

It's Rarely About Desire Itself
In my work with couples, I often see that the real problem usually isn't the gap in desire — it's what that gap comes to mean. One partner starts to feel chronically rejected while the other starts to feel chronically pressured. Over time, both people quietly withdraw, and sex becomes loaded with anxiety instead of pleasure. The goal in therapy isn't to force both partners to want sex the same amount — it's to remove the pressure and blame so you can find a version of intimacy that works for both of you.

How Desire Actually Works
Research on the dual control model of sexual response describes desire as the result of two systems working together: an "accelerator" that responds to arousing cues, and a set of "brakes" that respond to stress, distraction, or feeling unsafe. Some people also experience desire spontaneously, seemingly out of nowhere, while others experience it responsively — interest builds only after touch, closeness, or the right context is already underway. Neither style is more "normal" than the other, but a couple with mismatched styles can easily misread each other: the spontaneous partner may feel unwanted, while the responsive partner may feel there's something wrong with them for not being able to “get there.”

Reframing the Conversation
Relationship and intimacy experts consistently emphasize a few shifts that make these conversations go better:
•Separate the ask from the rejection. A "not tonight" is about timing or capacity in that moment, not a verdict on the relationship.
•Talk about sex outside the bedroom. Bringing it up in a neutral, low-pressure moment — a walk, a car ride — tends to go better than raising it right after being turned down.
•Get curious about what desire depends on for each of you. Context, mood, stress level, and feeling desired (versus just being "available") all shape whether someone wants sex, and these ingredients are often different for each partner.
•Notice how emotional distance shows up as sexual distance. Unresolved tension, resentment, or disconnection elsewhere in the relationship often surfaces first as a stalled sex life.
•Widen the definition of intimacy. Expanding what counts as sexual connection — not just intercourse-or-nothing — gives both partners more ways to say yes.

When to Reach Out for Support
If these conversations keep circling back to blame, shutdown, or shame no matter how carefully you approach them, that's a sign the pattern may need outside support to shift. This is exactly the kind of work I do in therapy — helping you understand what's driving the discrepancy, whether it's psychological, relational, or physical, and building a shared approach so neither of you feels responsible for fixing it alone. If you're finding that you and your partner could use more support than a blog post can offer, I'd love to help — feel free to reach out to schedule a session.

Mismatched libido is a solvable problem, not a life sentence. With the right framework and some compassion for both sides of the gap, most couples can find their way back to a sex life that feels good to both people again.
 
Sources
This post draws on ideas from the following sex and relationship experts. For a deeper dive, their books and resources are excellent next steps:
•Jessa Zimmerman, Sex Without Stress: A Couple's Guide to Overcoming Disappointment, Avoidance & Pressure
•Emily Nagoski, Come As You Are: The Surprising New Science That Will Transform Your Sex Life
•Vanessa Marin, sex therapist and creator of couples' communication resources on sex
•Esther Perel, Mating in Captivity: Unlocking Erotic Intelligence
•Emily Jamea, Reclaiming Pleasure: A Sex Therapist's Guide to Healing from Sexual Betrayal Trauma and related work on desire and communication
•Justin Lehmiller, Tell Me What You Want: The Science of Sexual Desire and How It Can Help You Improve Your Sex Life