Autoimmune Hepatitis (AIH) is a chronic and severe inflammatory disease of the liver caused by loss of tolerance to hepato-specific autoantigens, and the identification is made by applying diagnostic scores. It is characterized by an increase in serum aminotransferases - Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT), Immunoglobulin G (Ig), autoantibodies, where triggering agents appear that confuse the immune system that recognizes components of some hepatocytes as antigens. In this study, Medicinal Biomagnetism (MB) was applied, which is a treatment method developed by Dr. Isaac Goiz Durán (1941-2021), whose technique consists of applying a pair of medium intensity magnets 1,000 to 7,500 Gauss, with opposite polarities that resonate with each other and aim to depolarize the dysfunction magnetic field called Biomagnetic Pair (BMP). The magnetic resonance generated by the static magnetic fields, identifies and restores the electron spin of the biochemical elements that support the hydrogen potential (pH) distortion. The objectives of this study were: to investigate whether there was any change in the clinical and laboratory signs of the patient undergoing MB and to investigate the applicability of the technique in her clinical evolution; compare possible changes in saliva pH before and after therapy; observe whether there were changes in liver enzymes during the treatment period; find out whether during the treatment the hepatologist indicated a reduction in the dosage of the medication in view of the clinical/laboratory improvement; and if there was an improvement in symptoms. This study was conducted in a cross-sectional descriptive method with a quantitative approach. It investigated a 57-year-old female participant diagnosed with Autoimmune Hepatitis since 2015, residing in Curitiba, Paraná, Brazil. Data collection from the medical records occurred between October 2020 and June 2021 which laboratory tests, liver enzymes (Aspartate aminotransferase [AST], alanine aminotransferase [ALT], alkaline phosphatase [ALP], Gamma-Glutamyl Transferase [GGT]), and Immunoglobulin (Ig) were evaluated. These tests were consistently conducted in the same laboratory throughout the treatment, ensuring the same analysis process was followed. The participant underwent a body composition assessment using the tetrapolar bioimpedance model 450 – Biodynamics at the beginning and end of the treatment. A saliva sample was collected after a 3-hour fasting in all sessions. The saliva was in contact with the test strip for 15 seconds following the analysis of the pH level using a pH indicator strip – pH for Saliva and Urine Test Strip. The colorimetric method was used employing a scale of 4.5 – 9.0 for hydrogen potential, with a 0.25 adjustment for scale progression. Subsequently, the procedure involved scanning to locate the Biomagnetic Pairs (BMP) or dysfunctional points, applying the north (negative) point with the south (positive) point, using neodymium magnets with an intensity of 4500 Gauss. This allowed for the correction of pH distortion through the body's kinesiological reflex response, identified by an imbalance between the lower limbs with the participant in the supine position, with feet hanging off the examination table. Once an imbalance and its corresponding resonant point were detected, the pairs of magnets remained in place for approximately 20 to 30 minutes until the lower limbs were aligned, followed by the removal of the magnets from the participant. The MB technique was initiated in October 2020 following the analysis of these laboratory test results. A total of 20 sessions were conducted over 9 months, concluding in June 2021. The liver enzymes decreased during the treatment. The participant underwent a body composition assessment via bioimpedance at the beginning and end of the treatment which revealed a weight increase of 12.1%, a 25.8% increase in body fat percentage, and a 10.0% reduction in lean mass. The BMI categorized as overweight (BMI ≥ 25 – 29.9 kg/m²) showed an 11.9% increase. It is also noteworthy that in the first assessment, the participant had more extracellular water than intracellular water. However, the second assessment indicated better fluid balance with an increase in intracellular water. The salivary pH recorded was on average 6.75, that the according to Goiz Durán's theory, this pH facilitates the body’s homeostasis, as it is considered within normal levels. Therefore, the symptomatology decreased as the participant maintained this pH level. The participant experienced joint pain, muscle pain, headaches, fatigue, nausea, and poor digestion before the application of the technique, these symptoms have been present for the patient's last 5 years with conventional treatment. Following the application of the magnets these symptoms began to decrease. It is important to note that the north polarity of the magnet (-) is applied to the first point described in the pair, and the south polarity (+) is applied to the second point, for example, liver (-) / kidney (+), which facilitates liver detoxification via the kidneys, aiding in hepatic tissue repair and pain reduction. When a BMP forms in a single organ or anatomical structure, dual polarity is applied over the same, for example, liver (-) / liver (+), which is a pair for detoxifying the target organ. It is noteworthy that the liver was impacted in all scanning. The positive effect of Medicinal Biomagnetism (MB) on the treatment of Autoimmune Hepatitis (AIH) was observed in the present study. This effect may be evaluated by parameters such as the reduction of hepatic enzymes and immunoglobulin G, improvement in symptoms—headache and joint pain, reduction in the use of pain medication, withdrawal of corticosteroids, and reduction of immunosuppressants prescribed by the physician, as well as the stability of salivary pH, which indicated an improvement in quality of life. Despite the increase in weight and body fat percentage, the results were encouraging. More in-depth studies and greater attention from healthcare professionals are necessary for the timely and early recognition of this technique, which offers innovation and ease, allowing more people to benefit from MB as an aid in the medical treatment of AIH. Through the analysis of the medical records, it was observed that the MB technique made it possible to improve the clinical/laboratory status of the patient with AIH.

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