Stewed Pig Heart with Magnetite: A TCM Remedy for Insomnia

Introduction to Medicinal Diet

Ling Ci Shi (Magnetite) Stewed Pig Heart is a traditional Chinese medicinal diet with the effects of calming the spirit (ān shén dìng zhì), tonifying the heart, and benefiting the kidneys. This dish uses Ling Ci Shi (natural magnetite) and fresh pig heart as main ingredients, supplemented by Sheng Jiang (Zingiber officinale Roscoe, fresh ginger) and Gou Qi (Lycium barbarum L., goji berry), slowly simmered over low heat. According to the Shen Nong Ben Cao Jing (Divine Farmer’s Materia Medica), Ci Shi (Magnetitum, magnetite) is classified as a medium-grade substance, stating that it “treats generalized bì (painful obstruction) caused by wind-dampness, pain in the limbs and joints making it difficult to hold objects, (relieves) aching and soreness, eliminates severe heat, vexation and fullness, as well as deafness.” Pig heart is sweet and salty in taste, neutral in nature, and enters the Heart Meridian (HT). It is a traditional “like-treats-like” (yǐ xíng bǔ xíng) ingredient, capable of nourishing the heart and calming the spirit, supplementing blood and benefiting qi. Combined, magnetite settles and subdues floating yang, while pig heart nourishes heart blood. One settles, one supplements, together achieving the effects of calming the heart, relieving vexation, and improving sleep.

This medicinal soup is commonly used in folk practice to alleviate symptoms of restlessness of the heart-spirit, such as palpitations, insomnia, dizziness, and tinnitus. It is particularly suitable for middle-aged and elderly individuals suffering from nocturnal restlessness caused by heart-kidney disharmony. Its preparation is simple, and the soup has a rich, mellow flavor without the bitter and astringent taste commonly associated with medicinal cuisine, making it easy to incorporate into daily life. It should be noted that magnetite (Magnetitum) is a mineral medicinal substance; it must be processed by calcination and quenching before use to enhance its efficacy and reduce toxicity.

Medicated Diet Actions

The core efficacy of Magnetite (Ling Ci Shi) Stewed Pig Heart lies in “settling the heart, calming fright, nourishing the heart, and quieting the spirit.” Magnetite, salty and cold in nature and heavy in substance, can pacify the liver and subdue yang, settle fright and quiet the spirit, alleviating vertigo and tinnitus due to ascendant Liver Yang. Pig heart, by supplementing the corresponding organ, directly replenishes the qi and blood of the Heart meridian, improving palpitations and poor memory caused by Blood Deficiency. Together, they regulate the excitability of the central nervous system, shorten sleep onset time, and enhance sleep depth.

Additionally, this medicinal food can assist in alleviating restlessness and mild headaches associated with hypertension. Modern research has found that Magnetitum (Magnetite) contains trace elements such as iron, which can participate in hemoglobin synthesis and indirectly improve anemia; pig heart is rich in protein, B vitamins, and coenzyme Q10, which support myocardial nutrition and metabolism. Regular consumption of this dish has a certain effect on relieving uneasiness of the heart-spirit (xin shen bu ning), excessive dreaming with easy awakening (duo meng yi xing), and memory decline (ji yi jian tui).

Regulation of Heart-Kidney Interaction

According to Traditional Chinese Medicine theory, restlessness and insomnia often arise from Heart-Kidney Disharmony—where Heart Fire is hyperactive while Kidney Water is insufficient, leading to an imbalance between water and fire. Magnetite (Magnetitum) enters the Kidney Meridian (KI), able to consolidate Kidney Qi, guide fire back to its source, and settle the root. Pig heart (Sus scrofa domestica) enters the Heart Meridian (HT), capable of nourishing Heart Yin and clearing deficiency heat. Used together, they restore the normal ascending and descending between the Heart and Kidney, allowing the Heart Shen (spirit) to find its place of residence, and preventing deficiency fire from harassing upward.

The Role of Traditional Chinese Medicine

From the perspective of Traditional Chinese Medicine’s nature, flavor, and meridian tropism, magnetite (Ci Shi) has a pungent and salty flavor, cold nature, and enters the Liver, Heart, Kidney, and Spleen meridians. Its salty flavor can soften hardness, its cold nature can clear heat, and its heavy quality enables descending, thus it has four major actions: “heavily settle and tranquilize the spirit, calm the liver and subdue yang, improve hearing and vision, and receive qi and relieve dyspnea.” In the formula of magnetite-stewed pig heart, magnetite primarily functions to tranquilize and calm palpitations, as well as subdue and descend liver yang, making it especially suitable for mental restlessness and agitation caused by yin deficiency with yang hyperactivity.

Pig heart is sweet and salty in taste, neutral in nature, and enters the Heart Meridian. *Bencao Gangmu* (Compendium of Materia Medica) records that pig heart “nourishes heart blood and calms palpitations,” while *Shiliao Bencao* (Dietary Materia Medica) states that it “treats fright, anxiety, and melancholic depression.” A bowl of pig heart soup directly nourishes the yin and blood of the heart, allowing the heart to be nourished and the spirit to reside. When combined, magnetite (císhí) provides grounding with substantiation, while pig heart offers a source of supplementation, forming a treatment strategy of “one settles, one supplements—addressing both root and branch.” This medicinal food is especially suitable for complex patterns involving heart yin insufficiency and heart blood deficiency, accompanied by liver yang disturbing upward.

Indications

This medicinal diet is primarily suitable for the following groups of people: First, those suffering from chronic insomnia, dream-disturbed sleep that is easily interrupted, and difficulty returning to sleep after waking; second, those experiencing mental stress, palpitations, and impaired memory due to work or academic pressure; third, middle-aged and elderly individuals presenting with mild tinnitus, dizziness, blood pressure fluctuations accompanied by irritability; fourth, those with restlessness of the heart spirit, fatigue, and spontaneous sweating due to blood deficiency after childbirth or surgery.

For patients with neurosis, menopausal syndrome, and similar conditions presenting with mental restlessness and emotional instability, it may also be used as an adjunct dietary therapy. Additionally, students who engage in excessive mental work and creative professionals who consume this dish regularly may find it helpful in alleviating mental fatigue and improving concentration. It is particularly suitable for individuals with a yin deficiency constitution, characterized by a lean body type, feverish palms and soles, and dry mouth and throat.

Contraindicated Populations

1. Caution in Spleen and Stomach Deficiency Cold with loose stools: Magnetitum (magnetite) is cold in nature, and pig heart is neutral; however, excessive intake of cold-natured medicinal substances may aggravate diarrhea and cold pain in the abdomen. 2. Use under medical supervision during pregnancy and lactation: The sedative effect of Magnetitum may affect the fetus, and excessive dosage of mineral medicinals carries potential toxicity. 3. Not suitable for Yang Qi deficiency with aversion to cold, cold extremities, pale enlarged tongue with white slippery coating: This dietary remedy tends toward descending and calming, which may further weaken Yang Qi.

4. Contraindicated in individuals with allergies to pig heart or magnetite. 5. Caution is required in patients with renal insufficiency, as magnetite contains metallic components that are metabolized through the liver and kidneys. 6. During acute infections such as common cold with fever, cough with profuse phlegm, discontinue use to avoid trapping pathogens internally. 7. For children, elderly, and debilitated patients, the dosage should be reduced by half, and their response should be closely monitored.

Ratio of ingredients in the formula

The precise gram amounts are as follows (for one person, approximately two servings):

Magnetitum (raw): 15–20 g (Calcined Magnetitum is recommended, as it is more brittle and its medicinal effect is more easily extracted; if using the raw product, it must first be calcined and quenched). Fresh pig heart: 1 piece (approx. 200–250 g). Fresh ginger (Rhizoma Zingiberis Recens): 3–5 slices (approx. 10 g). Fructus Lycii (goji berry): 10 g. Fructus Jujubae (red jujube, pitted): 3–5 pieces. Salt: appropriate amount (approx. 2 g, added at the end for seasoning). Clear water: approx. 800 ml (enough to submerge ingredients by 3 cm).

If you want the soup to be more delicious, you can add 50g of lean pork or a small amount of cooking wine. Note: Magnetite (Cishi) must be wrapped in a gauze bag and tied tightly to prevent the powder from mixing into the soup. The pig heart needs to be rinsed free of blood, and the white fat and blood vessels should be trimmed away.

Preparation method

Step 1: Process the Magnetite (Magnetitum). Break the magnetite into soybean-sized granules, place them in an iron wok, and calcine over high heat until red-hot. Quickly quench them with rice vinegar (using 1/5 of the magnetite volume each time), repeating the process twice. After cooling, place the granules in a gauze bag and tie it tightly. This method enhances the magnetite’s effect of subduing yang while reducing its cold nature, thereby preventing damage to the stomach.

Step 2: Prepare the pig heart. Cut the pig heart open lengthwise, remove any internal blood clots and white fascia. Rinse repeatedly under running water until no blood remains. Slice into pieces about 1.5 cm thick. Place the slices in cold water in a pot, add 2 slices of ginger (Zingiber officinale). Bring to a boil, skim off any foam, then remove the pig heart and rinse with warm water.

Step 3: Slow-cooking. Place the gauze herb pack, the blanched pig heart, the remaining ginger slices, goji berries (Lycium barbarum), and red dates (Ziziphus jujuba) into a clay pot (or ceramic pot). Add enough clean water. Bring to a boil over high heat, then reduce to low heat and simmer for 1.5 to 2 hours, until the pig heart is tender and the liquid has reduced by half.

Step 4: Seasoning. Remove the herb packet (discard it), and add an appropriate amount of salt, stirring evenly. Optionally, sprinkle a small amount of chopped scallion for garnish. If there is a fishy odor, add a few drops of rice wine or white vinegar. Serve hot; the pork heart can be dipped in soy sauce as an accompaniment, and the soup can be consumed separately.

Drinking Tips

Dosage cycle and frequency: 2–3 times per week, with continuous use for 2 weeks constituting one course of treatment. Avoid consuming large amounts daily to prevent accumulation of magnetite (Ci Shi). If insomnia symptoms improve significantly, reduce to once weekly for maintenance.

2. Optimal Drinking Time: It is recommended to take it warm one hour after dinner or two hours before bedtime. Drinking a bowl of hot soup before bed helps calm the spirit to promote sleep; however, it should not be consumed immediately before bedtime to avoid increased nighttime urination that may affect sleep.

3. Compatibility Contraindications: During the administration period, avoid concurrent intake of strong tea, coffee, and pungent/spicy foods, as these may diminish the tranquillizing effect. Iron supplements and anticoagulant medications should be taken at least two hours apart from medicinal meals to prevent interactions.

4. Storage method: Remove the herb package from any unfinished decoction, then refrigerate. The following day, reheat to a full boil before consuming. The magnetite (Ci Shi) package should not be reused more than three times, otherwise its medicinal efficacy will be greatly diminished. Pig heart should be eaten on the same day, as its texture and flavor degrade overnight.

5. Individual Adjustments: If the patient usually feels cold and has cold hands and feet, add 10 g of Longan Aril (Dimocarpus longan) and a small piece of Cinnamon Bark (Cinnamomum cassia, about 1 g) to the soup to warm Yang. If the patient experiences significant restlessness, thirst, and dry mouth, add 15 g of Lily Bulb (Lilium brownii) and 10 g of Ophiopogon Root (Ophiopogon japonicus) to enhance the clearing-moistening action.