Can eating raw yeast raise insulin levels... prescription insulin is made from yeast not the same but can it raise at all or might you do more harm than good?

No: Eating raw yeast will not raise your Insulin levels or your blood sugar levels. I'm not sure why you would want to eat raw yeast i think it would taste terrible!

No insulin in yeast: There isn't any Insulin in yeast, and it turns out that consuming Insulin by mouth doesn't raise Insulin levels because Insulin is broken down by the acid in your stomach before it can be absorbed. (that is why people with diabetes inject insulin). On the other hand, just about anything you eat will raise the natural output of Insulin from your pancreas to help you metabolize the carbohydrates.