Weidao

What is GB28?

GB28, or Weidao, is an acupressure point on the lower side of the belly, just in front of and below the bony point of the hip.

The pinyin name Weidao is usually translated as Linking Path or Binding Path. It is the 28th point on the Gall Bladder channel, which runs down the side of the body from the head to the fourth toe.

In Chinese medicine GB28 is a meeting point of the Gall Bladder channel and the Dai Mai, the girdling vessel, a belt-like channel said to circle the waist. Because that belt is described as holding the lower body together, classical texts list GB28 for lower belly pain, vaginal discharge, hernia and prolapse, plus hip and low back pain. It sits beside GB27 and the two are often used as a pair.

The honest verdict on the evidence: there is essentially none for this specific point. We could find no controlled human trial that tested GB28, alone or as the main point, for any condition. Acupressure research in general is dominated by small, short, unblinded studies, and GB28 does not even feature in that modest literature.

Two things are worth saying once, clearly, rather than repeating all the way down this page. First, a long tradition behind a point is not evidence that pressing it does anything; centuries of use tell you what people believed, not what works. Second, tradition is not evidence of safety either. GB28 lies over the soft lower abdomen and groin, an area with bowel, blood vessels, hernia sites and surgical scars underneath, so the cautions further down this page matter more here than they would for a point on the hand.

Everything described on this page is self-applied finger pressure on unbroken skin. Nothing here involves needles or anything that breaks the skin.

Where is GB28 and how do you find it?

GB28 sits just in front of and slightly below the sharp front corner of your hip bone, the bump you can feel at the top of the pelvis.

• Lie down and relax. Lie on your back with your knees bent and feet flat, or sit leaning back a little. A relaxed belly makes the bony landmarks much easier to feel.
• Find the hip bone point. Put your fingertips on your waist and slide them forward and down until you meet a hard, pointed ridge at the front of your pelvis. Anatomists call this the anterior superior iliac spine; it is the bump your trouser pocket sits near.
• Step just in front of it. Move your finger pad a short distance forward and down from that bony point, about half a thumb-width, roughly 1 cm. In traditional terms GB28 is 0.5 cun in front of and below GB27, which sits at the bony point itself.
• Check you are on soft tissue. You should be off the hard ridge and in a softer hollow where the belly meets the hip. If your finger is on bone, you have not stepped far enough forward.
• Feel for the response. Many people notice a dull, slightly tender or heavy feeling at the right spot. Sharp, shooting or burning pain means move off.
• Remember it is paired. GB28 exists on both the left and right side. Most traditional use works both sides.

The hip bone point is easy to find on most people, so GB28 is one of the more reliable abdominal points to locate. If you are unsure, stay conservative: keep your finger just in front of the bony ridge rather than wandering towards the middle of the belly or down into the fold of the groin, where larger blood vessels and lymph nodes lie.

How do you apply pressure to GB28?

1. Settle first. Lie on your back with knees bent, or sit and lean back. A tense abdomen is harder to work with and more uncomfortable.
2. Use a flat finger pad. Place the pad of your index or middle finger on the point. Keep nails short and do not dig a fingertip in.
3. Press slowly inwards and slightly towards the hip bone. Sink in over two or three seconds rather than jabbing. Angle your pressure a little towards the bony ridge, not straight down into the soft belly.
4. Keep it comfortable. Aim for firm but easy pressure, around 3 or 4 out of 10. A dull ache is normal; sharp pain is not, and is a signal to ease off.
5. Hold or circle. Hold steady for 30 to 60 seconds, or make small slow circles for the same time, breathing out as you press.
6. Do both sides. Repeat on the other hip so the two sides match.
7. Repeat sensibly. Two or three rounds per session, once or twice a day, is plenty. There is no benefit in grinding at it.

Stop straight away if you feel sharp pain, numbness, tingling down the leg, a strong pulse under your fingers, or any pain that lingers after you lift your hand. Move off and do not press that spot again.

Do not press over clothing seams, a belt buckle or a waistband, and do not press through a full bladder or a very full stomach. Working on bare or lightly covered skin lets you feel the bony landmark and judge pressure properly.

Give any approach a fair but limited trial. If you have had no change after a couple of weeks of regular use, that is a reasonable point to stop and think about other options rather than pressing harder or longer.

What is GB28 traditionally used for?

• Lower belly and pelvic discomfort. The main classical use. Texts list GB28 for pain, fullness and dragging sensations low in the abdomen. There is no human trial evidence for this point and this use.
• Period problems and vaginal discharge. Tradition links GB28 to the Dai Mai, the belt channel, and uses it for irregular periods and for leukorrhoea, the old term for excessive vaginal discharge. Acupressure for period pain has been studied at other points, mostly in small unblinded student studies; GB28 itself has not been tested.
• Hip, groin and low back pain. The point sits near the hip joint and the muscles that flex it, so it is used locally for stiffness and aching. Any immediate relief is most plausibly ordinary soft tissue pressure and rubbing, which is not the same as a channel effect.
• Hernia and prolapse patterns. Classical sources name GB28 for hernia and for prolapse of the uterus, framed as the belt channel failing to hold things up. This is a traditional idea only. Hernia and prolapse are structural problems that need medical assessment, and finger pressure does not move tissue back into place.
• Constipation and bloating. Sometimes included in abdominal routines. Gentle abdominal massage has some modest trial support for constipation in general, but those studies tested broad massage, not GB28, so the point itself cannot claim the result.
• General relaxation. Lying down, breathing out slowly and applying steady pressure is calming for many people. That is a real and reasonable reason to use a routine, as long as you are honest that the calm may come from the pause rather than the point.

None of this amounts to treatment for a diagnosed condition, and nothing here should replace care you are already receiving.

Are there tips for using GB28 effectively?

• Find the bone before you press. Locate the hard front corner of the hip bone first, then step forward and down. Landmark first, pressure second, every time.
• Empty your bladder. A full bladder makes the lower belly tender and the point harder to judge. A quick trip beforehand makes the whole thing more comfortable.
• Warm your hands. Cold fingers on the belly make the abdominal muscles tighten, which buries the landmark. Rub your palms together first.
• Use the out-breath. Sink in as you breathe out and hold the pressure steady as you breathe in. The abdomen is softer on the out-breath and the pressure feels less invasive.
• Work both sides evenly. Give left and right the same time and the same pressure, even if only one side aches.
• Keep sessions short. One or two minutes per side is enough. Long, heavy sessions on soft abdominal tissue mainly produce soreness and bruising.
• Angle towards the bone. Press slightly towards the hip ridge rather than straight down into the belly. It gives a clearer sensation and keeps you away from deeper structures.
• Keep a short log. Note the date, what you felt and any change over the next few hours. Two weeks of notes will tell you far more than a memory will, and will show you honestly whether it is worth continuing.
• Pair it with movement. For hip and low back stiffness, a short walk or some gentle hip stretches after pressing is likely to do more for you than the pressure alone.
• Stop at the first sharp signal. Sharp pain, a pulse under the fingers or tingling into the leg all mean lift off. These are not signs the point is working.

What do people get wrong with GB28?

• Expecting a cure. The commonest error. GB28 has no trial evidence behind it, and no acupressure point resolves a hernia, a prolapse, an infection or a fibroid. Treat it as a comfort routine, not a treatment.
• Pressing on the bone. Landing on the hard front corner of the hip instead of the softer hollow just in front of and below it. If it feels like knocking on a knuckle, you have not moved forward enough.
• Confusing it with GB27. GB27 sits at the bony point itself; GB28 is about half a thumb-width in front of and below it. People often describe one and press the other.
• Drifting towards the middle. Wandering inwards across the lower belly takes you away from GB28 and over softer structures. Stay close to the hip bone.
• Pressing into the groin fold. Sliding too far down puts you over large blood vessels and lymph nodes. If you feel a strong pulse, move off immediately.
• Pressing through pregnancy. Lower abdominal points are traditionally avoided in pregnancy, and the area is one you simply should not be pressing while pregnant. Many online videos skip this entirely.
• Pressing a lump. Treating a bulge, a tender swelling or a suspected hernia with finger pressure instead of getting it examined. That delay is the real harm.
• Going too hard. Abdominal tissue bruises easily and heavy pressure buys you nothing. More force is not more effect.
• Using it to explain away new pain. Labelling unfamiliar belly pain as a blocked channel and pressing it. New, severe or worsening abdominal pain needs assessment, not acupressure.
• Skipping one side. Working only the sore hip and ignoring the other. Traditional use is bilateral.

What does the research on GB28 actually say?

There is essentially nothing. We could not identify any published controlled human trial that tested GB28, by needle or by pressure, as the main intervention for any condition. That is the honest position, and we would rather state it than dress up a tradition as a finding.

Where GB28 does appear in the literature, it is usually one point among many in a protocol for pelvic or gynaecological complaints, often in small case series or in clinical descriptions from practice. In that kind of study design you cannot separate what GB28 contributed from what the other points, the practitioner contact, the resting time and the expectation of help contributed. Such reports can suggest ideas worth testing; they cannot show that a point works.

The wider acupressure evidence base is also weaker than its popularity suggests. Most trials are small, run for a few days or weeks, and cannot blind participants to whether they are being touched. Pressing anywhere on a tender area produces real short-term sensation and relaxation, which is exactly the effect a sham group struggles to control for. The one clear exception in the whole field is PC6 on the forearm for nausea and vomiting, where many controlled trials and systematic reviews support a genuine, if modest, effect. GB28 has nothing comparable, and the strength of the PC6 evidence does not transfer to other points.

What this means for you is simple. If you press GB28 and feel more comfortable, that experience is real and there is no need to dismiss it. But you should not use it as a reason to delay seeing a doctor about pelvic pain, a lump, abnormal bleeding, a change in bowel habit or anything that is getting worse. Decide in advance how long you will try it and what change would count as useful, then judge it honestly.