About Us

The CESC is an experienced committee of scientists who hold the passionate belief that the pursuit of knowledge involves the collaboration of diverse communities.


Mission: We are a group of independent organizations and individuals collaborating in order to equip the public, Cannabis industry and policy makers with knowledge and resources  to enact evidence based.validation of Cannabis products and their effects.​

Meet Our Founders
John Abrams, Ph.D., Chairman, CSO


Jean Talleyrand, M.D., CTP
Vice-Chairman, CMO


CESC Co-Founder. Rated 2020 top Cannabis Scientists by Cannabis Science magazine.  Dr. Abrams entered the Cannabis industry after a successful career investigating antibodies as therapeutic agents.  His Cannabis industry accomplishments include developing a novel chemotyping algorithm for Cannabis categorization. Dr. Abrams has been Scientific Director at the Emerald Science Conference for six years.

 CESC Co-Founder.  Dr. Talleyrand is the most experienced Cannabis clinician world-wide, In 2004, he founded MediCann, a Cannabis physician referral service providing over one half million patient consultations.  Dr. Talleyrand’s first clinical program, the Dosing Project, employs an observational approach to Cannabis study, translating  crowd-sourced data in order to elucidate Cannabis dose effect relationships.

  • Experienced: CESC Founders have a combined 60 years of experience in drug development and clinical observations of Cannabis use
  • Collaboration: CESC is a consortium of independent organizations and individuals
  • Transformational: Crowd-source data informs the public and the Cannabis industry on best use practices
  • Comprehensive: The CESC approach is inherently “meta” and initiates from all facets of the Cannabis experience​

Vision: To see a world where Cannabis use is re-established with validated products and practices.  To reduce sickness and disease through the investigation of botanical products

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Our Personal Story


Haitian  born, Dr. Talleyrand is guided by island influences and generations of botanical medicine.  Throughout a 20 year career, Dr.Talleyrand has been an advocate of community-oriented primary care for underserved populations.  His experiences in northern California’s Cannabis culture helped him pioneer medical Cannabis observational study and consultation.  


Medically underserved communities have traditionally relied on self-care alternatives to medicine, such as Cannabis.  Cannabis is now getting recognized world-wide thanks to the persistence and tenacity of the poor and underserved.  Cannabis science can benefit from the experience of these communities.  In turn, profits from the burgeoning industry can be directed at social causes that improve the lives of those who have suffered through prohibition.

-Jean L. Talleyrand, M.D., CTP

Dr. John S. Abrams was born with a genetic defect causing compromised vision from an early age.  Dr. Abrams was able to navigate a successful family and career as a biomedical innovator despite the challenges of living with a disability.  Cannabis has been a part of his success.  Dr. Abrams sees the development of Cannabis based medicines as parallel to his experiences in Immunology and the discovery of biosimilar therapeutics. His mission is to contribute to the clinical science of Cannabis with hope of improving the lives of others with disabilities.