Abstract
Diabetes is still one of the main diseases worldwide due to its high incidence, prevalence and, unfortunately, very high mortality. Type 1 diabetes (and in some other types) is generally controlled by exogenous insulin. Several attempts oforal insulin administration to humans have been done so far. Some of them achieved interesting results, but it seems to exista barrier to transposethese studies into clinical trials. A broad perspective about the oral insulin and approaches will be addressed. Representative (not all) examples of innovation are herein described, and they should represent a step forward to achieve the main goal: to orally deliver insulin and improve the life quality of millions of patients.
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