An exciting new chapter begins as we embark on a journey through the Spleen meridian. In traditional Chinese medicine (TCM), meridians are vital energy pathways throughout the body, each uniquely influencing our holistic well-being. The Spleen meridian is especially important for digestion, blood regulation, and managing worry.
The Spleen meridian begins at Hidden White (Yin Bai, SP1), an acupoint near the big toenail frequently used in TCM clinical practice. Yin Bai is also a great acupoint for understanding the function of the entire meridian.
Where the Energy Begins
First recorded in “Zhen Jiu Jia Yi Jing” (“A-B Classic of Acupuncture and Moxibustion”), Yin Bai is classified as a Jing-Well point. These acupoints usually sit at the tips of fingers and toes, where internal energy is said to connect to the outer world. Jing-Well points are known for their ability to clear heat, regulate consciousness, and, in the case of Yin Bai, manage blood flow and regulate excessive worry.
In TCM theory, the spleen is far more than just a digestive organ—it’s responsible for moving blood that the liver has produced. It keeps blood flowing smoothly, nourishing the muscles and limbs. When the spleen is weak or out of balance, blood flow becomes disrupted. That’s when clinicians resort to Yin Bai, a go-to point for stopping all kinds of bleeding—nosebleeds, uterine bleeding, blood in urine or stool—and more. TCM calls this “reckless bleeding,” and Hidden White is often the first line of defense.
Yin Bai doesn’t stop with blood. It’s also used to address the emotional fallout of worry and obsessive thinking—two emotions that overwork the spleen, according to TCM. For those whose digestive issues stem from overthinking or chronic anxiety, this point can be incredibly valuable.
Modern Insights Into Ancient Practice
Medical science employs modern technology to better understand how acupoints can produce systemic effects. One study compared two acupuncture strategies using functional magnetic resonance imaging scans to track brain activity. One method targeted only Jing-Well points like Yang Bai, while the other added a Gathering Point for a broader approach. Both methods helped reduce pain, but the second, more comprehensive strategy had significantly stronger effects on the brain’s pain-processing centers, such as the anterior cingulate cortex and the insula.
What do these results mean? Jing-Well points on their own already have a strong analgesic effect, and their power may amplify when paired with carefully selected complementary points.
How to Locate and Activate Yin Bai
Yin Bai is located on the inner corner of the big toe, a couple of millimeters behind the edge of the nail. Press around the area until you find a spot that produces distinct sore or tender sensations, which indicate that you’ve found the acupoint.
To activate it:
- Firm pressure: Press with your fingertip for three to five seconds, rest for three seconds, and repeat for one to three minutes on each side. Since the spot is relatively small, you can use the dull end of a toothpick or pen to apply more targeted pressure.
- Circular massage: Use your index finger or thumb to massage the area in small circles for one to three minutes on each side.
- Herbal patches: Apply an herbal patch overnight for consistent long-term activation.
- Advanced methods: Acupuncture or moxibustion (a gentle heat therapy with dried mugwort) by a trained professional can deepen the therapeutic effects.
Precautions
If you have an injury, infection, or open wound in the area, avoid manually stimulating this point until it heals. If you’re using herbal patches, choose natural, non-irritating ingredients—especially if you have sensitive skin.
An Acupoint With a Wide Reach
Using a point on your big toe to calm your mind or stop bleeding may seem unusual at first, but in TCM, the logic is clear and time-tested. The Spleen meridian starts there, meaning Yin Bai is key to influencing everything this system governs: digestion, blood, emotional processing, and more.
Try activating this point next time you feel worried or agitated. You might be surprised how a little mindful stimulation can help you reclaim clarity, composure, and a sense of internal control.
TCM expert Shihhsiang Hung reviewed this article for accuracy and clarity.
Originally published in Epoch Times on 4 June 2025
