Cannabis grandfather Rapahel Mechoulam dies at 92

Raphael Mechoulam, TCH, medical cannabis, CBD
Raphael Mechoulam, discoverer of THC, CBD in medicinal cannabis

It hit me like a punch to the gut: the world pioneer in cannabis research, Prof. Raphael Mechoulam, known as the father of cannabis research died in Israel at age 92. His research in cannabis, on THC and CBD set off a chain reaction globally, recognising cannabis as medicine. His chemistry work on cannabis has helped physicians prescribe better medicine for wider indication. He’s inspired a new generation of biologists to study cannabinoids, the active molecules in cannabis, as medicine. 

I got to interview him some 15 years ago when I was working for the Jewish Telegraphic Agency and I appreciate the time he took and candidness in which he approached his interview. 

Professor Mechoulam was the first in the world to isolate the psychoactive substance in cannabis, THC, which affects the brain, consciousness, and creativity, as well as CBD, the plant’s most important substance for its known medical benefits. He did this when at the Weizmann Institute of Science but made the mainstay of his career at Hebrew University in Jerusalem.

He’d received dozens of awards, honors, and decorations throughout his life, including the Harvey Prize, EMET Prize, and Rothschild Prize.

In an article published in the journal Annual Reviews he shared “The endocannabinoid system has recently been revealed to us. Its involvement in a variety of biological processes is very broad, but the role of most of the substances that compose it, has not yet been studied. I want to emphasize that in the field of the endocannabinoid system, as in other fields, collaboration between scientists is a wonderful and useful thing for discovering new biological properties.”

“Working on cannabis was challenging and promising from a scientific perspective,” Mechoulam told me years ago. He had had support from the police, who provided the hashish (originating from police bans), and from the Ministry of Health, which gave the approval. The initial work was done at the Weizmann Institute and continued at the Hebrew University in 1966.

Prof. Asher Cohen, the President of the University, paid tribute to Prof. Mechoulam, “Most of the human and scientific knowledge about cannabis was collected thanks to Prof Mechoulam. He paved the way for a series of studies in the field and called for scientific collaboration among different researchers. He was a sharp-minded, groundbreaking, and charismatic intellectual. This is a sad day for the academic community, and I extend my heartfelt condolences to the family. May his memory be a blessing.”

Prof. Mechoulam was born in Sofia, Bulgaria in late 1930. after surviving the Holocaust he immigrated to Israel with his family in 1949. He began his journey at the Hebrew University with the completion of his second degree in biochemistry in 1953. Prof. Mechoulam began his research in cannabinoids at the Weizmann Institute in 1962 and then joined the Hebrew University in 1966, where he continued to study the compounds found in cannabis. He was appointed as a full-time professor in 1972 and in 1978 was appointed to the Lionel Jacobson Chair in Medicinal Chemistry.

Between 1979-1982, Prof. Mechoulam served as the Rector of the Hebrew University, and during his tenure, the Department of Computer Science was established. In 1999, Prof. Mechoulam was appointed as the President of the International Cannabinoid Research Society, a position he held until 2002. Additionally, he served as the Head of the Natural Sciences Division at the Israel Academy of Sciences and Humanities since 2007.

Karin Kloosterman
Karin Kloostermanhttp://www.greenprophet.com
Karin Kloosterman is an award-winning journalist, innovation strategist, and founder of Green Prophet, one of the Middle East’s pioneering sustainability platforms. She has ranked in the Top 10 of Verizon innovation competitions, participated in NASA-linked challenges, and spoken worldwide on climate, food security, and future resilience. With an IoT technology patent, features in Canada’s National Post, and leadership inside teams building next-generation agricultural and planetary systems — including Mars-farming concepts — Karin operates at the intersection of storytelling, science, and systems change. She doesn’t report on the future – she helps design it. Reach out directly to [email protected]

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