The One Moment a Year When Everything Is in Balance
The autumn equinox marks a turning point between expansion and contraction, yang and yin. In East Asian medicine, that transition offers a different way to understand why fall can bring both a physical and emotional shift.
Medically reviewed by Dr. Graves, ND, Colorado Natural Medicine & Acupuncture, Castle Rock, CO
This article draws on principles of East Asian medicine, a traditional medical framework developed through thousands of years of clinical observation. It is intended for general education and does not replace individualized medical evaluation. Talk with your provider about your specific symptoms and health history.
Every season asks something different of the body.
Summer moves outward. More light. More activity. More expansion.
Then, almost imperceptibly, that direction changes.
The autumn equinox marks the precise astronomical moment when the Sun crosses the celestial equator, creating nearly equal amounts of daylight and darkness around the world. It is the turning point between the outward movement of summer and the inward movement of the months that follow.
In East Asian medicine, that transition has its own language.
Yang begins to give way to yin. Expansion begins to give way to contraction. What was outward becomes more inward, more contained, more conserving.
And for some people, fall brings more than cooler mornings and changing leaves.
It brings a feeling of letting go.
When Summer’s Expansion Begins to Turn
In East Asian medicine, summer represents the height of yang: warmth, movement, activity, and outward expression.
Autumn is the transition away from that peak.
The shift isn’t abrupt. Nature doesn’t flip from summer to winter overnight. The movement is gradual, but the equinox represents an important turning point in that cycle.
The days continue to shorten after the equinox. The air cools. Plants begin pulling resources inward. Trees stop producing the same abundance of leaves and fruit, part of the same global shift NASA’s Earth Observatory tracks each year as daylight and darkness balance evenly across the globe.
The body is moving into a different season, too.
East Asian medicine has long emphasized adapting our habits, nourishment, and care to these seasonal changes rather than expecting the body to operate exactly the same way year-round.
Why Fall Is Associated With Grief
In East Asian medicine, autumn corresponds to the Metal element and to the Lungs and Large Intestine.
Its associated emotion is grief.
That doesn’t mean the equinox causes sadness, or that everyone should expect to feel grief when fall arrives.
It means grief and letting go are the emotional themes traditionally associated with this season.
And there is something about the transition that makes the association intuitive.
Summer is about expansion.
Autumn asks us to release.
The end of a season. The end of a relationship. A version of yourself you have outgrown. Someone you miss. Something you wanted to keep that you can’t.
Sometimes the hardest part isn’t the loss itself.
It’s that life keeps moving afterward.
East Asian medicine offers a different perspective: letting go isn’t necessarily something that happens after the work of healing.
Sometimes letting go is the work.
Why the Lungs Matter in This Framework
The Lungs have a particularly important role in East Asian medicine.
They govern breath and are considered the organ most directly connected to the outside world. They are also associated with the body’s defensive function and with the ability to receive what is needed and release what is no longer needed.
That makes the Lung’s connection with grief especially meaningful within this framework.
Grief has a physical quality.
A breath that catches.
A chest that feels heavy.
The involuntary sigh that arrives when you’ve finally stopped trying to hold everything together.
Breathing itself is an act of receiving and releasing.
In that sense, the Lung offers a powerful seasonal metaphor: take in what you need. Release what you don’t.
Letting Go Is Part of the Process
The Large Intestine is the paired organ associated with Metal.
Its physical function is elimination: releasing what the body no longer needs.
Within East Asian medicine, that physical function and the emotional process of letting go are understood as related expressions of the same broader theme.
The metaphor is simple because the biology is familiar.
Your body cannot keep everything.
It takes in.
It uses.
It transforms.
It releases.
The same principle can apply emotionally.
You don’t have to keep carrying something simply because you’ve carried it for a long time.
Trees don’t fight the loss of their leaves.
They release them because the next season requires something different.
What This Looks Like in Practice
At Colorado Natural Medicine & Acupuncture in Castle Rock, seasonal changes can be an opportunity to pay closer attention to what your body is asking for. In East Asian medicine, support during the transition into fall may include:
- Acupuncture focused on supporting Lung and Large Intestine function within the East Asian medicine framework
- Breathwork and practices that encourage fuller, more relaxed breathing
- Warming and moistening foods as the weather becomes cooler and drier
- More intentional rest and less constant outward activity
- Making space for grief, reflection, or emotions that may become more noticeable during the transition
None of this requires a dramatic seasonal overhaul.
Sometimes the most useful response to a transition is simply recognizing that a transition is happening.
That’s part of what acupuncture can do at its best: support the body’s ability to adapt rather than asking it to remain in the same state all year.
If Fall Already Feels Heavy
If grief, sadness, nostalgia, or a sense of loss is already present for you this time of year, you don’t have to turn it into a problem just because you feel it.
The season didn’t create the emotion.
It may simply give you enough quiet to notice it.
There is a difference between feeling something and being consumed by it.
You don’t have to rush past grief.
You don’t have to make it productive.
And you don’t have to hold on simply because letting go feels unfamiliar.
Sometimes the healthiest thing a season can teach us is that release is not failure.
It’s part of the cycle.
Frequently Asked Questions
Why does the autumn equinox matter in East Asian medicine?
The autumn equinox is an astronomical turning point that marks the transition from summer toward winter. In East Asian medicine, autumn is associated with the Metal element, the Lungs and Large Intestine, and the emotional theme of grief and letting go. The seasonal shift provides a traditional framework for adapting care, nourishment, and daily rhythms as the environment changes.
Why is fall associated with grief?
In East Asian medicine, grief is the emotion associated with the Metal element and autumn. The association is part of the traditional framework rather than a claim that the season biologically causes grief. Many people naturally experience greater reflection, nostalgia, or awareness of loss as the days shorten and the pace of life changes.
Why are the Lungs associated with fall?
Within East Asian medicine, the Lungs are associated with autumn, breath, the body’s relationship with the external environment, and defensive function. The season’s dryness and cooler temperatures also make respiratory health an important consideration during the transition into fall.
What can help support the transition into fall?
Traditional approaches include acupuncture, breathwork, warming and moistening foods, appropriate rest, and making space for reflection and emotional processing. The goal is not to force the body through the seasonal change, but to support adaptation as the environment changes.
We offer a free 15-minute phone consult for new patients. If this season is bringing something to the surface that you’ve been carrying for a while, that’s exactly the kind of conversation we’re here to have.
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