It might start at a red light. Your heart begins to pound and there is no reason you can find.
Or it starts at 2:40 in the morning. You wake up hot, the sheet damp at your collarbone, and a wave of dread arrives with the heat, as if something terrible has already happened and you are the last to know.
You were never the anxious one. You were the one who handled things. And now, somewhere past forty-four, your chest is tight in meetings, you are short with the people you love, and you lie awake wondering what has gone wrong with you.
Everyone has an answer. It's stress. It's the kids, or work, or the news. Maybe you should try meditating.
This letter is for the woman who has heard all of that and still suspects something else is going on.
What the popular advice misses
Most of what you will hear treats new anxiety in midlife as a stress problem, so the suggestions are stress suggestions: do less, sleep more, breathe.
All reasonable. None of it asks why a body that held steady through decades of stress would start to rattle now.
What a ten-year study found
The Study of Women's Health Across the Nation, known as SWAN, followed 2,956 women for ten years, starting when they were between 42 and 52. Every year the women reported how often, in the past two weeks, they had felt four things: irritability, nervousness or tension, feeling fearful for no reason, and a pounding or racing heart.
The finding that stays with me is about the women who started out calm. Women with low anxiety at the beginning were more likely to report high anxiety once they were in perimenopause, early or late, and after menopause, than they had been before it. That held even after the researchers accounted for hot flashes and night sweats, upsetting life events, money trouble and health.
The women who were already very anxious before the transition tended to stay that way, and the transition did not add measurably to their risk. The rise showed up among the women who had started out calm, the ones who had never needed to think of themselves as anxious at all.
So if this is you, the timing is worth taking seriously. A study cannot tell any one woman why her anxiety arrived when it did. It does say that anxiety becomes more likely in this window, including for women who coped well for decades.
One caution before anything else. A pounding or racing heart is one of the four symptoms in that study, and it is also worth checking in its own right. If your heart is racing in a way that is new to you, or you have chest pain or fainting, please see a doctor before you file it under hormones.
When it wakes you
The night is where this can get loudest.
A hot flash at night is its own event: a rush of heat, sometimes a racing heart, sometimes sweat, and sometimes a spike of alarm that seems to come from nowhere. If you were already prone to waking at three, it is easy to read the whole thing as anxiety, even when the heat came first.
The instinct is to do something. Kick off the covers, get up, start a breathing exercise, pick up the phone and search your symptoms.
In Polyvagal Sleep I suggest something quieter, which I call the hot-flash protocol. It is mostly about not doing.
When heat wakes you
Do not start any technique while the flash is happening. No counted breathing, no getting up to sort it out.
Lie still. Breathe the way you are already breathing. Let the heat do what it is going to do, without trying to push it down or hurry it along. It will crest and pass.
Wait until your skin has cooled and the sweat has faded. Then settle the way you usually would. If you know the quiet horizontal practice from the 3am letter (one hand on your lower ribs, a slow exhale, three sounds in the dark), that is the one.
The point is to stop stacking alarm on top of the heat.
The book also suggests a cooler bedroom than the one that worked in your thirties, with cooling sheets or a fan by the bed, and starting those now rather than waiting for things to get worse.
What to bring to your doctor
None of this replaces a conversation with a clinician, usually your primary care doctor, a gynecologist or a menopause specialist. Whether and how to treat the hormonal side is between you and them. This is not a hormone letter.
What you can do is walk in with something concrete. Two weeks of a very small log is enough.
Each morning, one line: the date, where you are in your cycle (or that a period skipped or came early), whether heat woke you in the night, and one word for how your body felt the day before. Wired. Flat. Fine. Tight.
It takes thirty seconds. And when someone says it might be stress, you have two weeks on paper of what your body has actually been doing.
What this can and cannot do
The hot-flash protocol is a small way to get through a wake without adding fear to it. It will not stop the flashes, and it is not a treatment for anxiety or for perimenopause. It may make the nights a little less frightening while you and your doctor work out the rest.
If the anxiety is heavy, if you are not sleeping most nights, or a low mood has been sitting on you for weeks, please bring that to your doctor soon, without waiting for the two weeks. And if you ever have thoughts of harming yourself, call or text 988 in the US, or your local emergency number.
If the language of body states is new to you, the free book is the plainest introduction I have written.
One thing to try this week
Tonight, put a pen and a small card on your nightstand, and turn the bedroom down a little cooler than usual.
If heat wakes you, lie still and let it pass. Breathe the way you are already breathing. Wait for your skin to cool before you do anything else.
In the morning, before the phone, write one line on the card: the date, your cycle day, whether heat woke you, and one word for your body.
Do that for two weeks. Then take the card with you to the doctor.
Maeve