Sugar was pouring into his bloodstream from his food for hours with no compensating insulin activity. In 2005 Chris again demonstrated the same response to L—no significant lowering of his blood sugar until 7 to 8 hours after injection, at which point it was metabolized and used up quickly. More on that later.It is important to note that Chris was losing his vision early that summer to diabetes-induced cataracts because of the months he spent very poorly controlled. Had we learned to understand glucose regulation and started home testing immediately after his diagnosis, we might have saved his sight