Juergen Friedrich Althoff, MD
1936 – 2026
Juergen Friedrich Althoff, beloved husband, father, grandfather, uncle and brother-in-law, passed away on July 3, 2026 at the age of 90.
Born in Essen, Germany, on June 6, 1936, Juergen built a life centered around family, science, and kindness. As a Doctor and Professor of Medicine he earned the respect of all those he encountered through his knowledge, integrity, dedication, and genuine care for others.
Above all else, he was devoted to his family and his dog(s). He was a loving husband and a proud grandfather who treasured time spent with his children and grandchildren as well as extended family members. Whether sharing stories, offering advice, or simply being present, he made those around him feel valued and loved.
Juergen’s deep knowledge of, and passion for science and medicine led him to pursue a successful career in medical and cancer research. During his career, he published more than 250 scientific papers and lectured on his findings around the world. Throughout his life he lived in Germany; Normandy and Burgundy, France (where he deepened his appreciation for fine foods and wines); Nebraska (where he expanded his love of the wilderness); and New Jersey (where he honed his talent as a craftsman in partnership with his wife).
An avid hunter and craftsman, Juergen found great joy in nature. He will be remembered for his humanity, intellect, sense of humor, and the kindness he showed to everyone he met.
He is survived by his loving wife D Lynn Siegelman, his sister (Ute); sons (Roetger and Eric); grandsons (Kevin and Dennis), nieces (Katja, Meghan, Taylor and Stevie); nephews (Holger, Stefan and Niklas); and brother- and sister-in-law (Richard and Cindy). The family is grateful for the extraordinary care he received over the years from his devoted wife Lynn.
A private service will be held on Monday July 6, at Orland’s Memorial Chapel in Ewing Township, NJ.
He will be deeply missed and lovingly remembered by all who knew him. In lieu of flowers, please consider a donation to the Nature Conservancy.
A heartfelt and touching tribute to a remarkable grandfather that beautifully captures his kindness, strength, and the different locations he called home throughout his life.
His profound and deep knowledge of medical science was truly remarkable and cannot be overstated. I know this firsthand from the many conversations we shared.
His recent 90th birthday was a well-deserved celebration of this noble human being. I am indescribably proud of him as a person, of his lifetime achievements, and of the always funny and sometimes enlightening conversations we had together.
Especially over the last six years, we got to know each other better and better, and we developed a heartfull and always honest relationship. The distance between Germany and the US could not keep us apart.
Academically, he has always been a role model for me. Although I ended up on the engineering side of the university rather than in medicine, I have always admired his scientific curiosity, immense knowledge, and dedication. We may have belonged to different faculties, but our shared passion for science always brought us together.
Thank you, Lynn, for all the love you gave Jürgen and for taking such wonderful care of him. Thank you as well for all the love you have shown me, I love you too!! We will be seeing each other again soon. ❤️
May you rest in peace, Jürgen. And who knows perhaps you’ll continue to help guide me through life 😉
My sincere condolences to Lynn and Eric on loss of Juergen. He was such a nice man and always loved a bottle of wine and great conversation. I will remember him fondly.
Mike Mahoney & Brody