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I've seen the video. Its very interesting.
I can see that she has published on and around the subject of cancer metabolism. Some of her research could probably be considerd a seminal work on the topic (obviously I've not performed a literature review on it though).
The video, and her work, do not draw any causative links between dietary sugar and the proliferation / growth / metastasis of cancer cells though.
She talks about how she wants to study this pathway as a potential therapy.
As far as I can tell, nothing has come of that, in terms of published studies.
Sophia Lunt, Michigan State University was the Ted speaker. She has peer reviewed work on cancer metabolism.