"Science of life after death” by Dr. SÉRGIO THIESEN
Public Reunion at Friar Luiz Home
Wednesday April 29, 2026
Lecture on Spirituality and Science:
Cardiologist Sérgio Tiessen gives a lecture on the “Science of life after death,” discussing how contemporary medicine and academic research are integrating concepts of spirituality, religiosity, prayer, and forgiveness into healthcare treatment (1:09:18–1:53:00).
Who is the speaker?
The guest speaker for the meeting was Dr. Sérgio Thiesen (1:07:40).
He was presented with the following profile:
Education: Cardiologist and physicist, with a specialty in condensed matter physics, magnetism, and superconductivity (1:07:44–1:07:52).
Family Background: Son of Spiritist parents, his father being Francisco Thiesen, a prominent name in the Spiritist movement, who served as president of the Brazilian Spiritist Federation between 1975 and 1990 (1:07:53–1:08:02).
Work: Effective member of the Fiscal and Superior Council of the Brazilian Spiritist Federation for 25 years, as well as a speaker and lecturer in several Brazilian states and abroad (1:08:06–1:08:21).
Summary:
This video is a virtual public meeting held at Lar de Frei Luiz, an institution that celebrates 60 years of dedication to assisting socially vulnerable people, focusing on children, the elderly, and charitable assistance (0:22–0:32).
Main topics addressed:
Charitable Work: The institution details its work, which includes everything from monitoring f women to daycare centers (315 children from 6 months to 4 years old) and socio-educational projects for children from 4 to 14 years old (0:43–1:30).
Lecture on Spirituality and Science: Cardiologist Sérgio Tiessen gives a lecture on the “Science of life after death,” discussing how contemporary medicine and academic research are integrating concepts of spirituality, religiosity, prayer, and forgiveness into healthcare treatment (1:09:18–1:53:00).
Emotional Education and Reflection: Several participants reinforce the importance of the Gospel and emotional education, emphasizing that spiritual assistance often requires the individual also to transform internally in order to break patterns of suffering (59:31–1:02:10 and 2:15:20–2:18:00).
How does the lecture suggest learning about spirituality?
The lecture, conducted by Dr. Sérgio Thiesen, suggests an approach grounded in science, study, and fraternal practice in order to understand spirituality. The main paths indicated are:
Study of the Works of the Codification: The speaker reinforces the importance of the postulates brought by Allan Kardec in The Spirits’ Book and other works of the Codification as the fundamental basis for understanding the immortality of the soul and reincarnation (1:09:28–1:10:41).
Dialogue Between Science and Spirituality: He emphasizes that current knowledge should not be isolated; medicine and other areas of science are already seeking evidence about spirituality. The suggestion is to follow academic research — such as that found on PubMed about prayer, forgiveness, and compassion — that validates the influence of spirituality on human health (1:24:45–1:30:51).
Emotional Education and Inner Reform: It is emphasized that learning is not only intellectual. Learning about spirituality requires the exercise of forgiveness, gratitude, and emotional control (1:01:52–1:02:22). The speaker stresses that “whoever is here” — in the Spiritist house — “is not the one who knows the most, but the one who needs the most” (14:57–15:01).
Practice of Service and Charity: Learning becomes concrete in the practice of good and in helping others, overcoming voluntary torments through solidarity and the living of the Gospel in daily life (51:46–52:10).
Monitoring Scientific Evidence: The lecture encourages Spiritists and interested people to observe how renowned educational institutions — such as Harvard, Cambridge, and Brazilian schools — already include disciplines on spirituality and medicine, demonstrating that this is a “path of no return” for human progress (1:21:28–1:22:15; 1:35:16–1:35:56).
What is the origin of the Spiritist group mentioned?
The institution that promotes the event is the Educandário Social Lar de Frei Luiz, which was founded in 1964 (0:22–0:25).
The institution is dedicated to a threefold service structure focused on children, the elderly, and charity directed toward populations in situations of social vulnerability (0:32–0:39).
How does science view spirituality in hospitals?
According to Dr. Sérgio Thiesen, contemporary medicine is in the process of transitioning from a purely materialistic and mechanistic paradigm to a spiritualist model, which integrates religiosity and spirituality as determining factors for health (1:20:17–1:21:58).
The main points of this approach include:
Growing Scientific Evidence: The speaker emphasizes that medical databases, such as PubMed, already contain tens of thousands of scientific publications on topics such as spirituality and health — 35,000 articles — prayer — 90,000 articles — and forgiveness — 30,000 articles — validating these elements as relevant practices for clinical well-being (1:24:50–1:27:36).
Academic Training: Dr. Thiesen highlights that renowned medical schools around the world, including institutions in Brazil, already include courses on spirituality and medicine in their curricula (1:35:22–1:35:57).
Impacts on Hospital Practice: The inclusion of spirituality brings measurable benefits, such as reducing levels of depression, suicide, and substance use, in addition to promoting greater existential meaning and emotional stability for patients (1:38:03–1:39:05).
Prayer in Operating Rooms: The practice of prayer by medical teams before procedures is presented as a growing reality in several hospitals, uniting the team on behalf of the patient (1:51:49–1:52:25).
Mediumistic Approach: For complex mental health cases, the speaker argues that medicine should consider the influence of discarnate spirits, using the mediumistic meeting and fraternal dialogue as instruments of assistance, which has already been presented at world congresses of psychiatry (1:46:01–1:48:53).
Why does the speaker study 100 personalities?
Dr. Sérgio Thiesen mentions that he studies the lives and thoughts of 100 personalities — divided into two groups of 50 — with the objective of obtaining opinions and reflections on humanity’s current challenges (1:54:15–1:55:05).
The main points of this work are:
Access to Post-Discarnation Wisdom: The speaker uses his ease in working with teams of mediums to seek what these personalities — who were notable figures in various fields of knowledge and medicine — think today, after having returned to the spiritual world (1:54:35–1:54:50).
Contributing to Collective Progress: The intention is to bring these spirits’ views on topics of general interest in order to help humanity deal with complex issues of the contemporary world (1:54:55–1:55:10).
Preparation for Future Works: The speaker indicates that this survey will serve as the basis for future publications, allowing the public to access the opinions of figures such as Dr. Bezerra de Menezes, Philippe Pinel, Nise da Silveira, among other illustrious names from the sciences and Spiritism (1:55:13–1:55:40).
How does music assist in spiritual healing?
Although Dr. Sérgio Thiesen’s central lecture focuses on the correlation between medical science, spirituality, and the immortality of the soul, the role of music as a tool of assistance and healing is addressed in the musical moments that compose the meeting.
The video emphasizes that music plays a fundamental role in spiritual harmonization and in the emotional well-being of individuals (32:18–32:33).
The main points about the role of music presented during the event include:
Slowing Down the Soul and the Heart: Music is described as a form of prayer that helps slow down the soul and the heart, promoting a state of inner peace necessary for healing (32:18–32:33).
Awakening Love: The songs are interpreted as voices that awaken the latent love both in the singer and in those who listen, functioning as a balm for life (31:49–32:08).
Light and Joy: Music is compared to the light of day, bringing joy and helping improve each person’s experience of life (32:38–32:57).
Transmission of Light and Joy: Music is compared to the light of day, being an instrument that brings joy and hope to the listeners’ daily lives (32:38–32:57).
How does the soul affect physical health?
According to Dr. Sérgio Thiesen’s lecture and the content of the meeting, the influence of spirituality on physical health occurs through the following pillars:
Change in the Medical Paradigm: The speaker emphasizes that contemporary medicine is expanding its materialistic model to include the spiritual dimension, recognizing that spirituality and religiosity positively impact health (1:23:43–1:24:00).
Emotional Education and Self-Education: The meeting emphasizes that “emotional waste” and negative behaviors — such as selfishness and aggressiveness — generate vibrations that attract physical and spiritual difficulties. Health, therefore, is linked to the need for the individual to change internally, respecting themselves and others (1:01:22–1:02:26).
Preventive Actions and Healthy Habits: Spirituality, by promoting the appreciation of the body as an instrument of the soul, encourages better habits, such as reducing the use of harmful substances — alcohol and tobacco — improving diet, and practicing physical activities (1:39:17–1:39:35).
The Role of Prayer and Forgiveness: Dr. Thiesen cites that there are tens of thousands of scientific articles validating the use of prayer — 90,000 articles — and forgiveness — 30,000 articles — as tools that assist public health and clinical well-being (1:26:09–1:27:31).
Mediumistic Approach: The meeting addresses that diseases, including complex conditions such as autism, may be influenced by discarnate spirits, with mediumistic treatment and fraternal dialogue — spiritual assistance — being effective complementary means for the patient’s recovery and balance (1:46:17–1:48:53).
How is distance treatment carried out?
Distance spiritual treatment, as demonstrated at the end of the meeting, consists of a moment of collective harmonization. The process involves the following guidelines:
Mental Preparation: Participants are invited to pace their breathing, calm the mind, and harmonize their thoughts (2:19:06–2:19:23).
Current of Union: The objective is to establish a great current of love, union, and fraternity, focused on assisting various groups, such as people in situations of vulnerability on the streets, in hospitals, in prisons, or in their own homes (2:19:33–2:20:44).
Intercession: Through prayer, the mercy of Jesus and the support of Frei Luiz’s phalanx are requested for those in need, including brothers and sisters on the spiritual plane who are lost (2:20:53–2:21:27).
In addition, the speaker mentions that, in clinical and research contexts, mediumistic treatment may involve fraternal dialogue and assistance directed toward discarnate spirits connected to complex health cases, a practice that he has presented at international congresses (1:46:17–1:48:53).
Initiatives of the House: The “Fradinho 2026 Yearbook” is presented, documenting the institution’s history and recent actions, such as the Perambulando project, which takes children to museums and cultural centers (1:56:33–2:00:20).
Personal Experiences: Paulo César Frutuoso shares moving accounts about the spiritual treatment of children with complex conditions, emphasizing the connection between karmic baggage and life mission (2:01:06–2:07:06).
"Science of life after death” by Dr. Sérgio Tiessen
How does spirituality enter medicine today?
According to the lecture presented, spirituality is being integrated into contemporary medicine through a shift from the materialistic and mechanistic paradigm to a spiritualist model.
The speaker emphasizes that renowned medical schools and healthcare institutions around the world already include religiosity and spirituality in their courses and research (1:20:22–1:21:41 and 1:35:22–1:35:56).
What is the relevance of compassion in medical articles?
According to the speaker, compassion has become a topic of great academic relevance in contemporary medicine. When searching for the term in medical databases, he identified about 41,000 scientific articles addressing compassion in medical contexts (1:28:44–1:28:54).
The speaker uses these data to demonstrate that the scientific study of these feelings is growing exponentially, validating the importance of spirituality and humanization in the clinical environment and in the doctor-patient relationship (1:30:53–1:31:16).
How does the soul influence brain biology?
According to the speaker, the interaction between the soul and the physical brain occurs under the paradigm that the human being is not only their brain, but an immortal soul that interacts with the central nervous system (1:29:42–1:29:54).
This influence on brain biology occurs as follows:
Psychic Connection: The speaker explains that the illumination of the immortal soul generates changes in the biology of the brain, triggering the release of neurotransmitters such as dopamine and oxytocin (1:30:13–1:30:39).
Impact on Health: These neurotransmitters bathe human cells, promoting well-being, health, and longevity, showing how the individual’s spiritual condition directly influences the functioning of their physical body (1:30:39–1:30:51).
Integrative Paradigm: This process is grounded in the model of psychoneuroimmunoendocrinology, which connects the psyche to the central nervous system, immunology, and the endocrine system (1:23:59–1:24:15).
The insertion of this concept occurs in several practical ways:
Scientific Research: There is an exponential growth of scientific articles in medical databases such as PubMed, investigating topics such as spirituality and health, prayer, forgiveness, compassion, and gratitude (1:24:57–1:31:00).
Integrative Approach: Spirituality has come to be seen as a factor that influences physical and mental health, being recognized as an element that can positively impact well-being and reduce levels of depression and mortality (1:38:03–1:38:37).
Mediumistic Medicine: The speaker mentions the use of the binomial “medicine and mediumistic meeting” as a complementary approach to treating the spiritual origin of diseases, especially in cases of mental disorders, where the aim is to understand influences from discarnate spirits connected to the patient’s history (1:41:18–1:46:53).
How does neuroscience explain human flourishing?
The speaker, Dr. Sérgio Thiesen, addresses the concept of human flourishing by relating it to positive mental and spiritual states that impact brain biology. According to the speaker (1:29:03–1:30:51), the practice of gratitude and other elevated feelings promotes structural and functional changes in the brain:
Neurobiology of Gratitude: The speaker cites that studies show that the habit of expressing gratitude at the end of the day modifies the brain, activating brain areas that are important for well-being (1:29:06–1:29:46).
Interaction Between Soul and Brain: The speaker emphasizes that we are not our brain, but rather souls that interact with the central nervous system. This interaction causes the “illumination of the immortal soul” to trigger the release of neurotransmitters — such as dopamine and oxytocin — that bathe human cells, promoting health, well-being, and greater longevity (1:29:50–1:30:51).
Clinical Impact: The speaker correlates these concepts of spirituality and health with the increase of existential meaning and human flourishing, observing that contemporary medical science has recorded exponential growth in research on how these mental states positively influence the organism (1:30:54–1:31:22).
How does the soul interact with the physical brain?
According to the speaker, the interaction between spirituality and the physical body occurs under the mind, body, and spirit paradigm (1:24:19). The speaker clarifies that human beings are not merely a brain, but immortal souls that interact with the central nervous system and the encephalon (1:29:42–1:29:54).
This interaction manifests itself as follows:
Psychoneuroimmunoendocrinology: The speaker points out that the psyche connects to the central nervous system, immunology, and the endocrine glands, forming a scientific basis for this connection (1:23:59–1:24:15).
Impact on Biology: When the immortal soul seeks a condition of enlightenment or well-being, a change occurs in brain biology, triggering the release of neurotransmitters such as dopamine and oxytocin, which bathe human cells and promote health (1:30:13–1:30:47).
Near-Death Experiences (NDEs): The speaker uses these phenomena as evidence that spiritual activity can be full even when brain activity is null or inactive, suggesting that consciousness is not the exclusive product of the brain’s biological functioning (1:31:32–1:32:12).
What are near-death phenomena?
According to the speaker, near-death phenomena refer to cases of patients who went through episodes of cardiac arrest in which brain activity was null, but who nevertheless reported vivid experiences during that period.
The video emphasizes that these reports suggest that, even with the brain inactive, the individual’s spiritual activity remains full.
This is one of the most studied topics within the “science of life after death,” with more than 200,000 articles registered in databases such as PubMed (1:31:32–1:32:12; 1:36:40–1:37:00).
How does prayer unite hospital teams?
As discussed in the lecture, prayer and spirituality act as elements of unification for hospital teams, being a growing and tangible practice in contemporary medicine.
The speaker highlights the following points:
Practice in the Operating Room: The video presents photographs of different hospitals around the world, showing that the common point among these teams is unity around prayer before procedures, which strengthens joint work (1:51:49–1:52:25).
Scientific Basis: This integration is not seen only as an act of faith, but as something supported by research, mentioning that there are about 90,000 articles in the PubMed medical database exploring the role of prayer in medicine (1:26:09–1:26:19; 1:52:10–1:52:25).
Impact on Care: Spirituality and religiosity, when integrated into the clinical environment, promote a more complete view of the human being, helping the medical team to act not only on the biological body, but also considering the patient’s spiritual dimension, which results in a more ethical and effective health approach (1:21:31–1:21:58; 1:39:44–1:40:17).
How does the soul influence cerebral biology?
According to the speaker, the interaction between the soul and the physical brain occurs under the paradigm that the human being is not only his or her brain, but an immortal soul that interacts with the central nervous system (1:29:42–1:29:54).
This influence on cerebral biology occurs in the following way:
• Psychic Connection: The speaker explains that the illumination of the immortal soul generates changes in the biology of the brain, triggering the release of neurotransmitters such as dopamine and oxytocin (1:30:13–1:30:39).
• Impact on Health: These neurotransmitters bathe human cells, promoting well-being, health, and longevity, showing how the individual’s spiritual condition directly influences the functioning of his or her physical body (1:30:39–1:30:51).
• Integrative Paradigm: This process is grounded in the model of psychoneuroimmunoendocrinology, which connects the psyche to the central nervous system, immunology, and the endocrine system (1:23:59–1:24:15).
Why does the speaker study 100 personalities?
Dr. Sérgio Thiesen mentions that he studies the lives and thoughts of 100 personalities — divided into two groups of 50 — with the objective of obtaining opinions and reflections on humanity’s current challenges (1:54:15–1:55:05).
The main points of this work are:
Access to Post-Discarnation Wisdom: The speaker uses his ease in working with teams of mediums to seek what these personalities — who were notable figures in various fields of knowledge and medicine — think today, after having returned to the spiritual world (1:54:35–1:54:50).
Contributing to Collective Progress: The intention is to bring these spirits’ views on topics of general interest in order to help humanity deal with complex issues of the contemporary world (1:54:55–1:55:10).
Preparation for Future Works: The speaker indicates that this survey will serve as the basis for future publications, allowing the public to access the opinions of figures such as Dr. Bezerra de Menezes, Philippe Pinel, Nise da Silveira, among other illustrious names from the sciences and Spiritism (1:55:13–1:55:40).
What does autism represent for spirituality?
According to the perspectives presented in the video, the view of autism from the spiritual perspective involves the following main points:
Spiritual influence: The speaker Sérgio Tiessen mentions that, in the approach of Spiritist medicine, the aim is to investigate the influence of discarnate spirits related to patients diagnosed within the autism spectrum disorder (ASD), using mediumship to identify these connections (1:48:22–1:48:43 and 1:50:32–1:50:47).
Complementary approach: The importance of psychotherapeutic work based on fraternal dialogue with these spirits linked to each case is highlighted, aiming to assist in the patient’s balance (1:48:38–1:48:53).
Karmic and missionary baggage: Paulo César Frutuoso adds, in his experience reports, that, from the spiritualist view, many of these children seem to carry a double baggage: a karmic one and a missionary one. He suggests that, in cases of associated complex medical conditions, this baggage may be bringing lessons or solutions to challenges that traditional medicine often has limitations in treating (2:06:39–2:07:06).
What does the metaphor of the desert teach?
The metaphor of the man lost in the desert, addressed at the end of the meeting (2:16:34–2:17:21), is used to explain the role of prayer in the individual’s life:
The Search and Help: Just as the lost man feels thirsty and asks for help, we, faced with life’s difficulties, raise our prayers to God.,
The Nature of Divine Help: The lecture explains that God will not make water appear magically or instantly before us. Instead, prayer acts as a mechanism of inspiration.
Guidance: Prayer illuminates the path, strengthens the spirit, and guides the individual toward solutions — leading him, for example, to someone who can help or to a spring where he can quench his thirst.
In short, the metaphor teaches that prayer does not change the law of life or the will of God, but transforms the human being from within, allowing him, through his own effort and discernment, to find the necessary paths to overcome his trials.
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