What if the moment you finally stop hurting is the moment you should be paying even more attention?
On this episode of Sugar Crush: The Rest of the Story, Dr. Rick Jacoby goes deep inside the nervous system to explain why numbness isn't necessarily an improvement—and why the progression from burning and tingling to feeling nothing at all can tell an important story about nerve function.
Dr. Rick begins inside the axon, where an extraordinary microscopic transportation system carries proteins, cellular materials, signals, and waste along some of the longest cells in the human body. He explains anterograde and retrograde transport and uses the image of a two-way highway inside every nerve to illustrate what happens when that system begins to break down.
From there, he explores glycation—his central theme that excess sugar can interfere with proteins and normal biological processes—and connects it to his larger theories surrounding diabetic neuropathy and nerve dysfunction.
The conversation then moves to the electrical side of the nervous system: myelin, the nodes of Ranvier, small versus large nerve fibers, pain receptors, nerve-conduction testing, and the remarkable process that allows an electrical signal to race from your fingertip to your spinal cord and brain.
But the heart of the episode is Dr. Rick's description of the progression of diabetic neuropathy. It can begin with occasional numbness, burning, tingling and stabbing sensations. As damage advances, symptoms may become constant. Then something deceptive can happen:
The pain disappears.
That doesn't always mean the problem has resolved. Loss of protective sensation can leave someone unable to feel injuries to the foot, increasing the risk of unnoticed wounds and serious complications.
