Chinese medicine treats the year as a cycle, not a constant. The body that thrives in July is not doing the same work in January, and the classical texts are unusually specific about it: what to eat, when to sleep, how hard to push, and which organ systems carry the load in each season.
This is a practical guide to that framework — what actually changes season to season, and what to do about it.
The organising idea: yin, yang and the turning year
The year moves between two poles. Summer is peak yang — outward, active, hot, expansive. Winter is peak yin — inward, still, cold, conserving. Spring and autumn are the transitions, and in Chinese medicine transitions are where most people get into trouble, because behaviour lags behind the season.
The summer solstice is the hinge. It is the longest day and the peak of yang, and from that moment yang begins to decline even as the hottest weather arrives. Autumn is not a slow fade from summer; it is a directional reversal that starts in June.
The practical version: stop doing summer things before the weather tells you to. Most people over-extend through September and pay for it in November.
Spring — the Liver season
Spring belongs to the Wood element and the Liver-Gallbladder pair. In TCM the Liver governs the smooth movement of qi, and spring is when stagnation from a sedentary winter surfaces: irritability, tight shoulders and neck, headaches, disrupted sleep, tension that has nowhere to go.
What helps: movement above all — the Liver hates stillness. Sour and green foods. Getting up earlier as the days lengthen. Stretching rather than only strength work. Reducing alcohol, which loads the Liver directly.
Spring is also allergy season, and in the TCM view allergies sit at the intersection of Liver rising and weak protective qi rather than being purely an immune misfire.
Summer — the Heart season
Summer belongs to Fire and the Heart. The Heart in Chinese medicine governs circulation but also the shen — consciousness, sleep quality, emotional steadiness. Summer excess shows up as agitation, palpitations, difficulty settling at night, and a kind of scattered overactivity.
What helps: genuine rest inside the active season. Cooling, water-rich foods. Bitter flavours in small amounts. Not training through the hottest part of the day. Protecting sleep even when the light says stay up.
The Fire element is also where joy lives, which is why summer imbalance often looks like either forced brightness or a flat inability to enjoy things.
Late summer — the Spleen season
Chinese medicine adds a fifth season most Western frameworks skip: late summer, belonging to Earth and the Spleen-Stomach. This is the damp, heavy stretch at the end of the year’s growth phase.
What helps: cooked, warm, simple food. Less raw and cold intake than the weather suggests. Regular meal timing. This is the season where digestive capacity is most easily damaged, and Spleen qi deficiency built here shows up as fatigue and bloating for months afterward.
Autumn — the Lung season
Autumn belongs to Metal and the Lung-Large Intestine pair. As the yin cycle begins, plant energy moves down into the roots — and the same instruction applies to you. Autumn is for consolidation, not expansion.
What helps: protecting the neck and upper back from wind, which is the classical entry point for external pathogens. Pungent foods in moderation. Moistening foods as the air dries — pears, honey, white foods. Building protective qi before cold season rather than treating illness after.
Large Intestine 4, the point in the web of the hand, is one of the most-used points in the entire system and is particularly associated with this season and with the onset of colds.
Winter — the Kidney season
Winter belongs to Water and the Kidneys, which in Chinese medicine store the deepest reserves — constitutional energy, the substrate everything else draws on. Winter is for banking, not spending.
What helps: more sleep, genuinely. Warming, slow-cooked food. Salty flavour in small amounts. Keeping the low back and feet warm. Reducing training intensity rather than fighting the season with harder workouts.
The common winter complaints — feeling cold all the time, low libido, exhaustion that sleep does not fix, low back ache — map closely onto Kidney yang deficiency, which is also the pattern most often mislabelled as adrenal fatigue in functional medicine. I cover that overlap in adrenal fatigue and kidney deficiency.
Seasonal affective symptoms belong here too. Light matters, but so does the mismatch between a body asking to slow down and a calendar that does not.
The holidays: a season of their own
The stretch from late November through New Year does more metabolic damage than any other part of the year, and not primarily through calories. It is the combination of disrupted sleep, alcohol, sugar, cold weather, reduced movement and social stress arriving simultaneously.
The interventions that actually hold: eat before events rather than arriving hungry, keep one non-negotiable movement habit, protect sleep on the nights you can, and treat alcohol as the Liver load it is rather than the calories. January detox protocols are mostly compensating for a problem better prevented in December.
How this is used clinically
Seasonal framing is not a substitute for diagnosis. What it does is explain timing — why a patient’s symptoms cluster in a particular part of the year, and why a protocol that worked in June stops working in December.
In practice it changes what gets emphasised: herbal formulas shift, acupuncture point selection shifts, and dietary advice shifts, while the underlying pattern diagnosis stays the same.
Frequently asked questions
What are the five seasons in Chinese medicine?
Spring (Wood/Liver), summer (Fire/Heart), late summer (Earth/Spleen), autumn (Metal/Lung) and winter (Water/Kidney). Late summer is the one Western frameworks usually omit.
What should I eat in winter according to TCM?
Warm, cooked, slow-prepared food; root vegetables, bone broths, black and dark foods, small amounts of salty flavour. Reduce raw and cold intake, which taxes digestion when the body is already conserving heat.
Why do I feel cold all the time?
Persistent cold, especially with low back ache, fatigue and low libido, fits the Kidney yang deficiency pattern. It also overlaps with thyroid and iron issues, so it warrants labs rather than assumption.
Does acupuncture help seasonal allergies?
It is commonly used for allergic rhinitis, and the TCM approach treats both the acute symptoms and the underlying protective-qi weakness. Best started before the season rather than during it.
When should I start preparing for cold and flu season?
Autumn, not winter. The classical principle is building protective qi before exposure, which in practice means sleep, food and stress work in September and October.
The takeaway
The seasonal framework is not folklore dressed up. It is a structured argument that the same body needs different inputs at different times of year, and it predicts a set of symptom patterns that show up reliably in clinic. Used well, it changes timing and emphasis rather than replacing diagnosis.
Want your own pattern assessed rather than a general seasonal rule? Book a consultation in Tustin or virtually.
Author: Dr. Brandon Bright, DAOM, LAc — Tustin, Orange County. Educational content; not medical advice, diagnosis or treatment. Persistent symptoms deserve proper evaluation rather than seasonal self-management.