TH4 is the fourth thoracic vertebra of the upper back. TH4 nerves help control your lungs, diaphragm, and rib cage.
• Meridians: liver meridian (yin), gallbladder meridian (yang)
• Connections: gallbladder, common duct
• Possible problems: gallbladder conditions, jaundice, shingles
How Galvanic Skin Response Works in a Scan
A look at how lung meridian theory shows up in wellness conversations — and how practitioners use it as a
