The parents point is valid though.<p>If not eating sugar could slow (all) cancers, then not eating at all would clearly cover that case, and should have slowed the lung cancer.<p>At the very least, his anecdote is convincing to me that it &quot;starving the cancer&quot; doesn&#x27;t work with lung cancer.<p>In the more general sense though my first impression of the phrase &quot;route energy through metabolic pathways that cancer is disadvantaged for&quot; is that it sounds like random word salad.