Blood deficiency

Blood (血 xuè) in Chinese medicine does more than the red fluid does in a laboratory report. It is the moistening, settling counterpart to qi: it keeps tissue supple, it gives the eyes something to see with, and — this is the part Western readers find strangest — it anchors the mind at night. A body short of it is not so much tired as unmoored.

The relationship is stated as a couplet: 气为血之帅，血为气之母, qi commands the blood, blood is the mother of qi. Qi moves it; blood gives qi somewhere to live. That is why the two shortages travel together, and why building blood in this tradition always starts with the digestion rather than with the blood itself.

Three networks share the work. The spleen (脾) makes blood out of food. The liver (肝) stores it and releases it, which is why the liver is said to open into the eyes. The heart (心) governs its circulation and, in the same breath, the settledness of the mind.

The same chapter goes on to the hands and the fingers. It is a functional definition rather than a poetic one: blood is what a part needs in order to do its job, and the classical list of signs is simply that sentence run backwards.

This pattern arrives as a set of small dry facts that nobody thinks to mention to anyone. People notice them in the mirror, in the shower drain, and at three in the morning.

• Standing up quickly greys the vision for a second or two.
• Dry, gritty eyes by the evening, floaters, and screens becoming genuinely tiring rather than merely boring.
• Lips, gums and the lower eyelid rim looking pale; the whole complexion described as dull rather than white.
• Hair thinning or dry, nails that split or ridge.
• Numbness or pins and needles in the fingers and feet, or cramping in the calves at night.
• Waking between two and four with the mind switched on, and light dream-filled sleep either side of it.
• Periods that are light, short, pale, or arriving late; memory that has become unreliable in a way that is new.

Palpitations on climbing stairs belong here too. In the classical reading the heart is short of what it circulates, so it works faster to make up the difference — which is exactly the sort of statement that should send a reader to have it checked properly rather than accepted as a pattern.

The blood pattern is the one where the photograph and the lips together tell you more than either alone.

Where a qi deficiency tongue is pale and swollen, this one is pale and small. That single contrast does a great deal of work in a reading, because the two patterns share almost every other sign.

Blood is built slowly out of food and spent quickly through blood loss, eyes and sleep. Both halves of that sentence show up in what readers report.

What tends to make it heavier

• Heavy periods, repeated blood donation, childbirth, or breastfeeding without eating more.
• Long screen hours. The Neijing puts it directly: prolonged looking harms the blood (久视伤血).
• Eating very little, eating no animal protein without replacing it carefully, or long stretches of restrictive eating.
• Night after night of six hours, and going to bed after one.
• Endurance training carried on while eating for a smaller life.

What tends to ease it

• Building foods eaten regularly rather than in one large weekly meal.
• A dark room, and being asleep for the eleven-to-three window the tradition assigns to the liver.
• Closing the eyes for two minutes every hour of screen work, which is the cheapest thing on this page.
• Gentle, warming movement — walking, slow swimming — rather than sessions that leave you hollow.

The building list is dark, sweet and iron-ish. Most of it is ordinary food, and the two that sound exotic are sold in every Chinese grocery as dried fruit.

• 枸杞 gǒu qǐ, goji berries — a small handful in hot water, in congee, or in soup.
• 桑葚 sāng shèn, mulberries, dried or fresh.
• 大枣 dà zǎo, jujube, and 龙眼肉 lóng yǎn ròu, dried longan flesh, simmered together.
• Black sesame, ground rather than whole, on rice or porridge.
• Beetroot, spinach, dark leafy greens, and long-cooked beef or chicken broth.
• Eggs, liver in small quantities, and black beans.

Iron from food is absorbed better alongside something sour — this is one of the places the tradition and the laboratory agree without either needing the other. The full list lives on the food as medicine page.

Blood deficiency is the pattern where the mind will not settle at night, so the point paired with it is 内关 Nèiguān, Pericardium 6, two thumb-widths above the wrist crease between the two tendons. Its classical association is the chest, the heart and the stomach, and it is the point people already know without knowing it: the elasticated bands sold for motion sickness sit exactly there.

For the building side of the pattern, Zusanli, Stomach 36 is the other point named, because in this tradition blood is made from food. Thirty to sixty seconds each, both sides, in the hour before sleep. How to find Neiguan.

Blood rarely runs short on its own. It usually arrives after something else, or alongside it.

• It commonly follows qi deficiency, because the spleen that is not building qi is not building blood either.
• It shades into yin deficiency when dryness picks up heat: same dryness, plus night sweats and evening warmth.
• With yang deficiency you get pallor and cold together, and cold cramping periods.
• It is the least likely of the five to sit with dampness, though a long damp pattern that has blocked the digestion can eventually produce it.

When two patterns are named in a report, the order matters. The one written first is the one the suggestions are built around.

Ask for a full blood count and ferritin. Bring the result to whatever you do next, including a reading from us — it makes the reading better, and it is the sort of thing a careful practitioner wants to know.