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McMaster University

Departmental Colloquium

SPEAKER Dr. David Chettle McMaster University
TOPIC Is strontium beneficial or harmful to bone health? 

There are data to show that excessive levels of strontium intake can result in fragile bones. There are also clinical trials which show that strontium supplements administered to people diagnosed as suffering from osteoporosis result in a reduced fracture risk. These data could indicate that the risk/benefit curve of strontium intake is U-shaped, or that risk depends on health status. Strontium exposure is therefore extremely interesting to study as it could have important health impacts. My research group at McMaster, in collaboration with colleagues at Ryerson University, has developed a novel non-invasive x-ray fluorescence method to detect strontium in living humans. This system has been applied to measurements in a diverse “convenience” sample of volunteers, with intriguing results, regarding the detected levels of strontium and geographic location/ethnicity of volunteers. It has also been used in an extensive study following a group of subjects with osteoporosis self-supplementing with strontium. In my talk, I will review the status of strontium and health and discuss the physics behind measuring it non-invasively. I will speculate on whether public health intervention to increase strontium intake modestly could impact the prevalence of osteoporosis in Canada and other western/northern countries.
DATE Wednesday, April 05, 2017
TIME 3:30 pm
  Coffee will be served at 3:10 pm (ABB 273 lounge)
HOST Fiona McNeill  [, Phone: (905)525-9140 ext 21437 ]

For more information phone 905-529-7070 X24559 or Email the Department of Physics and Astronomy

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