The meridian theory of acupuncture for regulating insomnia is based on the meridian theory of traditional Chinese medicine. It holds that the meridian system of the human body is distributed throughout the body, internally connecting the internal organs and externally connecting the limbs and joints. Insomnia is closely related to the poor circulation of qi and blood in the meridians and the dysfunction of the internal organs. The following elaborates on the principle of acupuncture in regulating insomnia from the perspective of meridian theory:

First, unblock the meridians and harmonize the qi and blood

Meridians are the channels for the circulation of qi and blood. Patients with insomnia often suffer from poor circulation of qi and blood, which leads to the deficiency of nourishment to the heart spirit, resulting in symptoms such as difficulty falling asleep, frequent dreams and easy awakening. Acupuncture stimulates specific acupoints to unblock the meridians related to sleep, promote the circulation of qi and blood, and nourish the mind. For example:

The Kidney Meridian of Foot-Shaoyin: The kidney is responsible for storing essence, generating marrow and connecting the brain. Insufficiency of qi and blood in the Kidney meridian can affect the peace of mind. Acupuncture at kidney meridian points such as Taixi and Zhaohai can nourish Yin, reduce internal heat, calm the mind and aid sleep.

The Hand Shaoyin Heart Meridian: The heart governs the spirit. Imbalance of qi and blood in the Heart Meridian can lead to restlessness of the mind and spirit. Acupuncture at heart meridian points such as Shenmen and Yinxi can nourish the heart, calm the mind and regulate the spirit.

The Spleen Meridian of Foot Taiyin: The spleen is the source of qi and blood production. Insufficient qi and blood in the Spleen meridian will affect the nourishment of the heart spirit. Acupuncture at spleen meridian points such as Sanyinjiao and Zusanli can strengthen the spleen, benefit qi and harmonize qi and blood.

Second, regulate the functions of internal organs and balance Yin and Yang

The occurrence of insomnia is closely related to the dysfunction of internal organs, especially the heart, liver, spleen and kidneys. Acupuncture improves sleep by stimulating meridians and acupoints, regulating the functions of internal organs, and restoring the balance of Yin and Yang. For example:

Insomnia caused by disharmony between heart and kidney: Excessive heart fire and insufficient kidney water lead to restlessness of the mind and spirit. Acupuncture on acupoints such as the Heart Shu and Kidney Shu can connect the heart and kidneys and balance Yin and Yang.

Insomnia caused by liver depression and transformation into fire: When liver qi is depressed and transformed into fire, it disturbs the heart, leading to insomnia and frequent dreams. Acupuncture at liver meridian points such as Taichong and Xingjian can soothe the liver, relieve depression, and clear liver heat.

Insomnia caused by deficiency of both heart and spleen: Insufficient heart blood and weak spleen qi lead to the failure to nourish the heart spirit. Acupuncture on acupoints such as the Heart Shu and Spleen Shu can nourish the heart and spleen, calm the mind and stabilize the will.

Third, regulate the nervous system and improve sleep rhythms

Modern research shows that acupuncture can regulate the function of the autonomic nervous system and improve sleep rhythms by stimulating meridians and acupoints. For example:

Regulating the balance between the sympathetic and parasympathetic nerves: Insomniacs often have sympathetic nerve excitation and parasympathetic nerve inhibition. Acupuncture on acupoints such as Neiguan and Shenmen can inhibit the excitation of the sympathetic nerve and promote the function of the parasympathetic nerve, thereby improving sleep.

Regulating the function of the cerebral cortex: Acupuncture at head points such as Baihui and Sishencong can regulate the excitation and inhibition processes of the cerebral cortex and promote the recovery of sleep rhythms.

Fourth, regulate endocrine and neurotransmitters

Patients with insomnia often have endocrine disorders and imbalances of neurotransmitters. Acupuncture stimulates meridians and acupoints to regulate the function of the hypothalamic-pituitary-adrenal axis (HPA axis) and promote the normal secretion of neurotransmitters. For example:

Promoting melatonin secretion: Acupuncture at auricular acupoints such as Auricular Shenmen and subcortical acupoints can promote the natural secretion of melatonin and regulate the sleep-wake cycle.

Regulating 5-hydroxytryptamine levels: 5-hydroxytryptamine is an important neurotransmitter closely related to sleep and mood regulation. Acupuncture at acupoints such as Shenmen and Sanyinjiao can regulate serotonin levels and improve sleep quality.