An interventional study of Yin Fu Rui De Far-Infrared Radiator and Sham Far-Infrared Radiator in Dementia and Alzheimer Disease, sponsored by Juin-Hong Cherng. Recruiting at 1 site in Taiwan. Open to participants aged 61 Years to 92 Years. Per ClinicalTrials.gov, last updated 2026-06-26.
Sponsored by Juin-Hong Cherng · Not applicable, Interventional, and Treatment
Alzheimer's disease (AD), the most common cause of dementia, is a progressive neurodegenerative disorder characterized by cognitive decline, including impaired learning ability, memory loss, and behavioral disturbances.
According to surveys conducted by the Ministry of Health and Welfare in Taiwan, the prevalence of dementia among individuals aged 65 years and older was estimated at 7.86% in 2018, affecting more than 280,000 individuals, and is projected to approach 900,000 by 2065, resulting in substantial medical, social, and economic burdens. Current pharmacological treatments provide only limited symptomatic benefits and may be associated with adverse effects. Therefore, safe and effective non-pharmacological interventions that may support cognitive function and reduce caregiver burden are urgently needed.
Experimental studies suggest that far-infrared (FIR) irradiation may enhance mitochondrial oxidative phosphorylation, increase ATP production, and promote microglial amyloid-β clearance, which may help delay the progression of Alzheimer's disease.
This trial aims to investigate the safety and effects of far-infrared (FIR) therapy on cognitive function in patients with Alzheimer's disease.
The findings may support the clinical application of FIR therapy as a non-pharmacological intervention to improve cognitive function and quality of life, reduce medication burden and treatment-related side effects, lessen caregiver burden, delay institutionalization, and reduce the social and economic burden associated with Alzheimer's disease.
Alzheimer's disease (AD), the most common cause of dementia, is a progressive neurodegenerative disorder characterized by cognitive decline, memory impairment, behavioral disturbances, and deterioration in activities of daily living. According to surveys conducted by the Ministry of Health and Welfare in Taiwan, the prevalence of dementia among individuals aged 65 years and older was estimated at 7.86% in 2018, affecting more than 280,000 individuals, and is projected to approach 900,000 by 2065. As the disease progresses, increasing cognitive impairment places substantial medical, social, and economic burdens on patients, caregivers, and healthcare systems. Current pharmacological treatments for Alzheimer's disease provide limited symptomatic benefits and may be associated with adverse effects. Therefore, alternative non-pharmacological interventions that may support cognitive function and improve quality of life are being actively explored.
Experimental studies have suggested that far-infrared (FIR) irradiation may exert beneficial biological effects on mitochondrial function and neuroinflammation. FIR exposure has been reported to enhance mitochondrial oxidative phosphorylation, increase adenosine triphosphate (ATP) production, and improve microglial activity involved in amyloid-β (Aβ) clearance. These mechanisms may potentially delay neurodegeneration associated with Alzheimer's disease progression.
This clinical study is designed as a single-center, randomized, single-blind, parallel-group controlled trial conducted in Taiwan. A total of up to 40 participants with Alzheimer's disease will be enrolled and randomly assigned in a 1:1 ratio to either the active FIR treatment group or the sham-control group. The investigational device is the Yin FuRui De Far-Infrared Therapy Device (Model CE-1889), which generates far-infrared wavelengths ranging from 4 to 14 μm.
Participants in the treatment group will receive daily FIR irradiation therapy using a head-mounted FIR device. FIR irradiation will be applied once daily to the Fengfu (GV16) and Baihui (GV20) acupoints for 30 minutes per site. Participants in the control group will use an identical device with the FIR function disabled. Prior to home use, study personnel will provide device-use training and instructions to participants and their caregivers.
The primary objective of the study is to evaluate the safety of the FIR therapy device. Safety assessments will include monitoring the incidence, severity, and relationship of adverse events (AEs) and serious adverse events (SAEs) associated with the investigational device throughout the study period.
Secondary objectives include evaluating changes in cognitive performance using the Mini-Mental State Examination (MMSE) and assessing mitochondrial function biomarkers obtained from peripheral blood samples. Outcome assessments will be conducted at baseline, Month 1, Month 3, and Month 12.
Safety analyses will be conducted in the Intent-to-Treat (ITT) population. Baseline normal and post-treatment abnormal cases, as well as their proportions, will be summarized separately for the intervention and control groups. The number and incidence rate of adverse events (AEs) and serious adverse events (SAEs) will be calculated and descriptively analyzed. Group comparisons of adverse event incidence will be performed using the Chi-Squared test. Efficacy analyses for MMSE scores and mitochondrial function biomarkers will include paired-sample t tests and independent-sample t tests, as appropriate.
This study aims to determine whether the head-mounted FIR therapy may serve as a safe adjunctive non-pharmacological intervention for patients with Alzheimer's disease to support cognitive function, improve quality of life, reduce caregiver burden, and potentially delay disease progression and institutional care.
2,172 studies on the registry are indexed under Dementia; 541 are open to participants now.
This study's planned enrollment of 40 is below the median of 83 across 1,629 interventional studies indexed under Dementia.
Browse Dementia studies →Juin-Hong Cherng is the lead sponsor of 2 studies on the registry; 2 are open to participants now.
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Exclusion Criteria:
Participants will receive active far-infrared (FIR) therapy using a head-mounted FIR device (Yin Fu Rui De Far-Infrared Therapy Device, Model CE-1889). The device delivers far-infrared irradiation (4-14 μm) and is applied to Fengfu (GV16) and Baihui (GV20) acupoints for 30 minutes per site, once daily for 12 months. The intervention will be initiated under supervised training at the study site, followed by home-based self-administration by participants and/or caregivers. Participants will continue their usual medical care without changes to standard pharmacological treatment.
Device: Yin Fu Rui De Far-Infrared Radiator
Participants will receive a sham intervention using an identical-appearing head-mounted device (Yin FuRui De Far-Infrared Therapy Device, Model CE-1889) with the far-infrared emission function disabled. The sham device will be applied to the same acupoints (Fengfu GV16 and Baihui GV20) for 30 minutes per site, once daily for 12 months. Procedures, duration, and application schedule will be identical to the active treatment group to ensure blinding. The sham device does not emit far-infrared radiation.
Device: Sham Far-Infrared Radiator
The investigational device is a head-mounted far-infrared therapy device manufactured in Taiwan. * Emission wavelength: 4-14 μm * Heating mechanism: ceramic semiconductor heating element * Design: head-mounted structure with external housing to reduce energy dissipation * Application sites: Fengfu (GV16) and Baihui (GV20) Regulatory status: Approved medical device (Medical Device License No. 006083 issued by the Taiwan Food and Drug Administration (TFDA), Ministry of Health and Welfare, Taiwan). Approved indications include relief of fatigue, improvement of local blood circulation, and reduction of muscle stiffness and neuralgia. In this study, the device is used investigationally to evaluate potential effects on cognitive function in patients with Alzheimer's disease dementia.
Also known as: Yin Fu Rui De Far-Infrared Radiator (Model CE-1899)
The sham device is identical in appearance to the active device but without active far-infrared emission. It is used to maintain participant blinding and control for non-specific effects in device-based interventions.
Also known as: Sham Far-Infrared Device (Model CE-1889)
Number of Participants With Yin Fu Rui De Far-Infrared Therapy Device-Related Adverse Events (AEs)
Safety will be evaluated by tracking any unfavorable clinical occurrence associated with the use of the Yin Fu Rui De far-infrared therapy device, assessed through regular clinical physical examinations and documented via Case Report Forms (CRFs). The unit of measure is the number of participants experiencing at least one AE. Safety analysis will be performed using the Intent-to-Treat (ITT) population (N=40). Following the protocol's statistical plan, the specific clinical manifestations, severity, and device-causality of all AEs will be documented. The proportions of pre-treatment normal versus post-treatment abnormal cases, along with AE incidence rates, will be calculated and compared between the intervention and control groups using the Chi-Squared Test. Unit of Measure: Number of participants
Time frame: Baseline (Day 1), Month 1, Month 3, and Month 12 for each participant.
Number of Participants With Yin Fu Rui De Far-Infrared Therapy Device-Related Serious Adverse Events (SAEs)
Safety will be evaluated by focusing on serious safety concerns associated with the use of the Yin Fu Rui De far-infrared therapy device, assessed through clinical evaluations and documented via Case Report Forms (CRFs). Serious adverse events (SAEs) are defined as events resulting in death, life-threatening conditions, prolonged hospitalization, or permanent disability. Safety analysis will be performed using the Intent-to-Treat (ITT) population (N=40). The relationship between the device and SAEs will be documented, and the proportions of pre-treatment normal versus post-treatment abnormal cases, alongside SAE incidence rates, will be statistically compared between the intervention and control groups using the Chi-Squared Test.
Time frame: Time Frame: Baseline (Day 1), Month 1, Month 3, and Month 12 for each participant.
Change From Baseline in Cognitive Function Score Assessed by MMSE
Assessment of cognitive improvement or decline using the Mini-Mental State Examination (MMSE), a standardized 30-point questionnaire. Following the protocol's statistical plan, within-group changes from baseline will be analyzed using paired-sample t-tests, and differences in changes between the intervention and control groups will be compared using independent-sample t-tests. Unit of Measure: Score on the MMSE scale (Range: 0 to 30, where higher scores indicate better cognitive function)
Time frame: Baseline (Day 1), Month 1, Month 3, and Month 12 for each participant.
Change From Baseline in Mitochondrial Adenosine Triphosphate (ATP) Production Rate
Evaluation of mitochondrial energetic pathways and cellular respiration efficiency through peripheral blood biomarker analysis. This test involves collecting blood samples (totaling less than 20 mL) to measure the quantitative rate of mitochondrial ATP production using a standardized fluorometric assay. Following the protocol's statistical plan, within-group changes from baseline will be analyzed using paired-sample t-tests, and differences between the intervention and control groups will be evaluated using independent-sample t-tests. Unit of Measure: picomoles per minute per milligram of protein (pmol/min/mg)
Time frame: Baseline (Day 1), Month 1, Month 3, and Month 12 for each participant.
Plan to share: No — To protect the privacy and confidentiality of the participants in accordance with personal data protection regulations, individual participant data (IPD) will not be publicly shared. The clinical study results will be disseminated exclusively through aggregated data in peer-reviewed scientific publications and official trial registries.
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Juin-Hong Cherng