Biografie
Obituary for Univ.-Prof. Dr. med. Jörn Rittweger (1961–2025)
It is with great shock and deep sadness that we bid farewell to Professor Dr. med. Jörn Rittweger, who passed away suddenly and unexpectedly on April 21 at the age of 63. As the longtime head of the Muscle and Bone Metabolism Department at the Institute of Aerospace Medicine of the German Aerospace Center (DLR), he shaped the scientific work of his department in a unique way – with extraordinary expertise, visionary thinking, and tireless commitment to research and teaching.
Jörn was an internationally recognized expert on the physiological effects of mechanical vibration and a pioneer in the development of this method for preventive and rehabilitative applications in medicine and sports. Throughout his career his work consistently bridged the gap between basic research and clinical application. Since 2009, he was head of the Space Physiology Department at DLR, later renamed to the Department of "Muscle and Bone Metabolism." Under his leadership, countless projects were initiated and implemented – including eight on the International Space Station (ISS), in three of which he served as principal investigator.
Jörn also held a professorship at the Department of Pediatrics and Adolescent Medicine at the University of Cologne and was dedicated to training aspiring scientists and physicians in the field of human physiology. He was a member of numerous scientific societies and international committees, held a patent, and published over 200 scientific articles. As the organizer of the "Immobilization-Related Muscle Disorders" competence network, he also actively promoted interdisciplinary exchange.
Jörn was not only an outstanding scientist, but also a valued colleague, inspirator, mentor, and friend. We will miss his calm, reflective manner, his extensive knowledge, curiosity, and his sense of humor. Our deepest sympathy goes out to his family and all those who were personally and professionally connected to him.
With his passing, science loses one of its pioneers in the field of space and exercise physiology. His legacy will live on in numerous projects, publications, and the careers of many young scientists!
May his gentle soul rest in perfect peace.
Maria Lucia Machado Duarte
28. April 2025 am 14:35Dear family and friends of Jörn,
I was shocked by Dr. Rittweger’s passing. I had the opportunity to meet him in person in 2023 during MEVITIH2023, and he was a very lively person, as the photo shows. He was also an outstanding researcher. It will be a great loss for the scientific community.
Condolences to the family and all close to him.
Regards,
Maria Lucia Machado Duarte
Patrícia Érika Marinho
28. April 2025 am 15:47We mourn the departure of this excellent researcher, who will continue to inspire his colleagues through the work he carried out throughout his life. My sincere condolences to the family.
Laisa Liane Paineiras-Domingos
28. April 2025 am 16:29In this difficult moment, I register my deepest feelings to family and close friends. His departure leaves a huge void in our hearts and the entire scientific community is dismayed by this great loss. His legacy will be immortalized and his friendship, his teachings and his commitment to science will be unforgettable. RIP my friend.
Enrico Caiani
28. April 2025 am 20:42It is hard to understand the impredictability of end of life, and this news was for me like a bolt from the blue.
I had the opportunity to meet Jörn about 15 years ago, during the meetings for organizing ESA bed rest at DLR, as young researcher approaching the space physiology field, and I soon appreciated his calm way of dealing with situations and problems, his passion for his work, his availability. During these years, other opportunities of meeting and collaboration arose (the last videoconf about a month ago), keeping in touch periodically, always appreciating his experienced point of view and knowledge.
For sure a great loss for his family and friends, but also for the human space phyisology scientific community.
My deep condolences to the family of Jörn and friends.
Enrico Caiani
Danúbia de Sá Caputo
28. April 2025 am 22:39Our condolences to the family and friends of our friend Rittweger.
LAVIMPI team miss him. This picture was registered in MEVITIH-2023, Rio de Janeiro, Brazil.
It will be a great loss for the scientific community, mainly the scientific group that study about mechanical vibration.
Rest in peace,
Danúbia de Sá Caputo
David Green
29. April 2025 am 1:31Jörn had a significant impact on the ‘world’ of space physiology, and human physiology more generally, but far more importantly – he challenged us all to be better.
He will be missed, but his impact will persist, in our work, and our hearts.
Sincerest condolences to his cherished family.
Cheerio Jörn.
Dave Green
Susanne Bickel
29. April 2025 am 8:59And again, it seems to be true that the best must go first. We miss you, Jörn!
Adérito Seixas
29. April 2025 am 9:43To all Jörn’s friends and family,
The scientific community has lost one of its most outstanding members far too soon. I am honoured to have had the opportunity to meet him in person and to discuss ideas with him.
I will always remember him as an exceptional scientist, very reflective, but also a person with an excellent sense of humour and an enormous taste for something that is universal: music.
My sincere condolences go out to his family and all those close to him.
Adérito Seixas
Lorenza Gilardi
29. April 2025 am 11:34It’s almost a week that the tragic news reached us, the colleagues in Munich.
We have been working with Jörn the past (almost) six years, since I started my job at DLR. Jörn was always a calm a competent presence and we all knew that we could count on him.
Our collaboration was almost exclusively remote but we had the occasion to regularly meet at project meetings and conferences. Wednesday mornings started for a long time with a brief, sometimes not so brief, sometimes in Italian, chat with Jörn. He was always a volcano of ideas and never stepped back when his support was required.
I remember when he showed us for the first time the EnviHub and enthusiastically explained his other ongoing research projects. I also remember his passion for optics and photography. Last time we met in person was in February this year. In our last phone call in Easter he told me how much he was proud of his son.
We lost him too soon and we are going to miss him. I would like to express my deep condolence to Jörn’s family.
Lorenza
PD Dr. Sabine Hawighorst-Knapstein 29.04.2025 16:08
29. April 2025 am 16:10Fast 2 Jahre durfte ich Jörn Rittweger und sein Team kennenlernen als einen überaus warmherzigen, wahrhaftigen Menschen und Wissenschaftler wie es nur die Allerbesten sind. Unser Austausch war getragen von dem Willen und Wunsch, die gesundheitliche Versorgung soweit möglich ein bisschen besser zu machen mit allem Idealismus wie auch fachlich fundierter Expertise, vertrauensvoll und vertraulich aufmerksam im Umgang miteinander, stets sehr wertschätzend, auch humorvoll-freundlich-innovativ-entspannt bei aller Ernsthaftigkeit zu den Themen wie Klima, Umwelt, Infektionen und vieles andere. Großen Dank für diese wunderbare gemeinsame Zeit im Dunkel mancher Wirrnisse neue Wege zu suchen, wir vermissen Sie schmerzlichst und trösten uns nur mit der liebevollen Erinnerung an viele produktiv-kreative Stunden. Sie bleiben im Herzen bei allen, die Sie kennenlernen durften, unverwechselbar als herzensguter Mensch und weit vorausschauender Wissenschaftler…..DANKE und grosses Mitgefühl für die Nächsten – Angehörige, das berufliche Umfeld und alle, die ihm nahestanden !!!
Sabine Knapstein
Dorit Donoviel
29. April 2025 am 16:19Natia, Isaak, and Magdalena,
We are sending you all our thoughts and warm well wishes as you try to process this enormous loss. We are heart broken. Jorn was a very valued colleague and friend. He was brilliant and passionate and warm hearted. He will be missed very much. Our condolences from Baylor College of Medicine in Houston Texas.
Eric Bershad
29. April 2025 am 16:59I am honored to have known Jörn through our strong research collaborations between Baylor, NASA and the DLR. He was a brilliant scientist, very creative, with a diverse and deep knowledge across many topics, and had a terrific sense of humor. He was always welcoming, warm, and enthusiatic about new ideas, eager to contribute his expert insights. He will be greatly missed. My sincerest condolences to his family.
Eric Bershad
Gaspare Pavei
29. April 2025 am 17:19Caro Jörn,
it’s hard to swallow this news.
I’ll never forget our discussions (in Italian and English) about locomotion on the Moon and running performances!
Rest in peace
Gaspare
Angelique Van Ombergen
29. April 2025 am 21:02To all Jörn’s family, friends and colleagues
it’s with a huge shock and very great sadness that we learned about Jörn’s passing. Jörn was an esteemed researcher, with a huge passion and drive for science that was for sure contagious. He always pushed for harder and better and didn’t shy away from challenging people to get a better outcome. He has made an important contribution to the field of space physiology. From the ESA side, we are losing a very important and knowledgeable collaborator, Jörn will be dearly missed. As a scientist, but much more so as a person. Sending condolences on behalf of the extended ESA team.
Karina Marshall Goebel
30. April 2025 am 1:18What a tremendous loss. Jörn was a brilliant mind, a visionary, and someone who truly thought outside the box. His passion for aerospace physiology was infectious, and he was also deeply committed to applying that knowledge to improve health here on Earth. I learned so much from him—not just about science, but also about persistence and thinking big. I will forever carry the lessons he taught me as his PhD student and will strive to carry on the torch. Thank you, Jörn, for everything you taught me over the years and for your dedication to the next generation of scientists. You will be sorely missed!
-Karina
Matthias Sperl
30. April 2025 am 9:19We are grateful having known you, sad you had to leave, hopeful to be together some day, some place, somehow. You remain in our hearts and memories, Matthias
Henning Wackerhage
30. April 2025 am 9:34Dear Family, dear DLR-Colleagues, dear Friends,
We are shocked and very sad to hear that Jörn has passed away.
I knew Jörn since his time in Manchester as I worked in Scotland at that time. After that I attended almost all of the KNIMS meetings that Jörn had initiated and organised and I was part of the KNIMS organisational team. Jörn’s mission was to prevent and treat the loss of muscle mass and function that occurs because of ageing, spaceflight or other factors. In an ageing society, this is an important aim as a functioning muscle allows us to be mobile and independent. These factors are key to having a good quality of life at old age.
We will miss the enthusiasm, dedication and smartness of Jörn. It is a big loss for many fields, especially skeletal muscle research, geroscience, and aerospace science.
We wish you strength and we hope that the DLR and others will finish the work that Jörn has started.
Henning Wackerhage
TU Munich exercise biology
Miriam Capri
30. April 2025 am 10:13With deep sadness I heard the terrible news.
Science has lost Jörn’s smart and brilliant smile, his tireless work for a collaborative and productive team, where humanity is at the top of priority. Only outstanding scientists are able to do this.
My sincere condolience to Natia, his wife and sons.
My heart is really broken.
Miriam Capri from Italy
Laurence Vico
30. April 2025 am 10:15Losing not only a colleague but also someone deeply respected in the scientific community — and with whom it was always such a pleasure to talk and build projects — is truly heartbreaking. We had several projects in the works and shared so many good times together, from Star City to ESTEC, DLR just recently, and at various conferences… I deeply share the sadness and sense of loss with his family and all those who worked closely with him. My heartfelt condolences.
Lucrezia Zuccarelli
30. April 2025 am 11:04I am deeply saddened to hear about the loss of Dr. Rittweger. I remember the first time I met you, nine years ago when I was a Master’s student and doing my internship at the EAC. When I was introduced to you as coming from the Physiology group in Milan and being Italian, you immediately smiled and started speaking to me in Italian, making me feel at ease right away.
We will cherish your signed book on vibrations here at the University of Udine, and we will always remember you for your passion and expertise in aerospace physiology, as well as your love for Italy.
Rest in peace, Dr. Rittweger. You will be missed.
Lucrezia and the team in Udine
Roni Cromwell
30. April 2025 am 17:38It is with great sadness that I learned of Jorn’s sudden passing. His thoughtful and creative approach to research made him a true leader in the field of space life sciences. He will truly be missed. Godspeed my dear colleague.
Rob Wust
30. April 2025 am 23:59Dear family and colleagues of Jörn,
I am very saddened to hear that Jörn so suddenly passed away, way too early. I remember Jörn from my PhD times at Manchester Metropolitan University in 2005, where he was ‚the bone-prof‘. His office directly entered the street and on my way to the laboratory, we always greeted each other. His house parties at his cosy English house in Alsager were legendary, with plenty of home-made feuerzangenbowle. Scientifically, he taught me a lot of things that I still teach students these days (mechanostat theory in astronauts for instance), and I fondly remember working on a bone paper together. Since his time at DLR, I remember Jörn as a passionate scientist with his heart at the right place. Not only passionate for science, but also for the people he took care of. He was always full of future plans, new ideas and ready to help where needed. More recently, the organisation of ‘his’ human physiology workshop became a yearly event for our lab to attend to, and I always looked forward to these meetings. Jorn always thought along and I fondly remember our discussions (partly even in Dutch!) about ongoing projects. He also really enjoyed talking about culture and typical Dutch traditions, such as Sinterklaas. Jörn, you will be dearly missed by many. You may have left this world, but you now shine among the stars. My sincere condolences go out to his family, colleagues and others close to him.
Dr. Sebastian Humbsch
3. Mai 2025 am 9:21Jörn war ein herausragenden Wissenschaftler, Mediziner, Mentor, Doktorvater, Familienmensch und Freund. Die Nachricht war mehr als ein Schock. Es ist schwer diesen Verlust in Worte zu fassen. Wir werden ihn auf ewig in guter Erinnerung behalten mit seinen guten Ideen, seinem Erfindungsreichtum, seiner Kreativität, Aufrichtigkeit, Begeisterung für die Wissenschaft, Forschung und Lehre. Seiner Familie, seinen Freunden und Kollegen wünsche ich viel Kraft, Trost und Mut in dieser schweren Zeit.
Corinna Parravicini
12. Mai 2025 am 10:26I just learned about Prof. Rittweger’s passing, and I am really saddened.
Prof. Rittweger published a successful book with Springer in 2022 (Manual of Vibration Exercise and Vibration Therapy) and two more books were planned.
He was always very kind and human.
My deepest condolences to his family and friends.
Corinna Parravicini from Springer, Milan, Italy