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This profile was last updated on 11/4/12  and contains information from public web pages and contributions from the ZoomInfo community.

Dr. John Hoffer

Wrong Dr. John Hoffer?

Project Director

Phone: (514) ***-****  HQ Phone
Lady Davis Institute
3755 Côte Ste Catherine Road
Montreal, Quebec H3T 1E2

Company Description: The Lady Davis Institute (LDI) is a hospital based research institute focused on translational research involving basic science, clinical and population based...   more

Employment History

Board Memberships and Affiliations


  • PhD , Human and Clinical Nutrition
  • MD
    McGill University
62 Total References
Web References
LDI - Newsroom Archive, 4 Nov 2012 [cached]
Dr. John Hoffer honoured by Canadian Nutrition Society
The Lady Davis Institute (LDI) of the Jewish General Hospital is proud to congratulate Dr. L. John Hoffer, recipient of the 2012 Khush Jeejeebhoy Award. This award is conferred by the Canadian Nutrition Society (CNS) to Canadians who have made an extraordinary contribution to nutrition research that extends the role and impact of clinical nutrition practice.
As a project director at the LDI, senior physician in internal medicine and endocrinology at the Jewish General Hospital, and Professor of Medicine at McGill University, Dr. Hoffer has devoted his career to studying the impact of malnutrition on disease. An internationally known investigator, he is also a member of the JGH nutritional support team, which consults and organizes the provision of parenteral nutrition therapy for patients who are unable to properly ingest nutrients.
As a researcher, Dr. Hoffer has been a leader in understanding the application of evidence-based nutrition in the clinic. His current research interests include protein and micronutrient deficiencies in hospital settings and the risks and benefits of high dose vitamin C therapy in treating cancer.
Dr. Hoffer will receive the Khush Jeejeebhoy Award and present the plenary lecture at the CNS annual meeting in Vancouver next month.
"Earlier studies, both in our hospital ..., 23 Sept 2010 [cached]
"Earlier studies, both in our hospital and in other centres, demonstrated that the majority of acutely hospitalized patients have subnormal levels of vitamins C and D in their blood," said Dr. L. John Hoffer, MD, PhD, an investigator at the Lady Davis Institute for Medical Research.
"About one in five acute-care patients in our hospital have vitamin C levels so low as to be compatible with scurvy," added Hoffer, also a Senior Physician in the Divisions of Internal Medicine and Endocrinology, and a professor of medicine at McGill University. "But patients are rarely given vitamin supplements. Most physicians are simply unaware of the problem. Subclinical deficiencies of vitamin C and D have each been linked to psychological abnormalities, so we examined that aspect in our clinical trial."
"The lack of any effect of vitamin D on mood is good evidence we are not dealing with a placebo response," said Dr. Hoffer. "This looks like a true biological effect. Our finding definitely requires follow up in larger studies in other centres," he said.
ILSI - Nutrition Reviews, 29 June 2013 [cached]
L. John Hoffer, MD McGill University
Jewish General Hospital - About Us - Medical Staff, 28 May 2013 [cached]
Dr. Leonard Hoffer
L. John Hoffer, M.D., Ph.D (Medicine)
Dietary Supplement Information Bureau – Consumer, 15 Oct 2008 [cached]
Today, in the Montreal Gazette, Dr. L. John Hoffer, a professor of medicine at McGill University and an internist and clinical nutrition support specialist at the Jewish General Hospital, has written a response to this claim. Dr. Hoffer notes that many of the articles on the study in question have broad omissions, and that they may needlessly frighten individuals who are trying to cope with cancer treatments.
Hoffer principally finds fault with the study, which appeared in Cancer Research, because it did not involve ascorbic acid, but rather dehydroascorbic acid. Ascorbic acid is the form of vitamin C that is found in supplements. The dehydroascorbic acid in the study was mixed with cells in a concentraction that does not exist in nature.
The fact is that many more studies have found just the opposite of this recent study,--namely, that vitamin C in combination with chemotherapeutic drugs actually aids in the destruction of cancer cells and protects noncancerous cells. Hoffer also points out that in another recent study, vitamin C increased the benefit of chemotherapy, while the addition of dehydroascorbic acid decreased it.
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