Research...
General Reference
Diabetes Mellitus and Sugar-Substitute
Using Wikipedia to understand the condition, be sure to click on links to related articles. The discussion on the "talk" page regarding sugar-substitutes is extensive and rated as "high importance" in the Food and Drink category.
Consumer Medical Resources
WebMD | MayoClinic.com | Healthline | Sharecare
Periodical Databases
AltHealthWatch | Consumer Health Complete | Health Source | Medline
The Open Web
For each site you find ask yourself:
Is this a personal blog? a forum?
Who sponsored/authored this site and what professional credentials do they lend to the site?
Is the site selling some product or idea? Does this effect the message (expected bias)?