Professor Tim Noakes. One of the several doctors I listened to more than six years ago that is responsible for my health improvement and reversal of type II diabetes.

5 grams of glucose in the blood stream. 

https://www.youtube.com/watch?v=hy5UPMtSS3U #mce_temp_url#    

Sometimes the textbooks are incorrect.

An excellent presentation well worth the time to listen to it. Basically the bottom line to much I have learned in the last 6 years studying the subject. You can gain knowledge that took me hundreds of hours to learn in just over an hour. My condition is very close to what he talks about his own condition.