There is a strong link between the consumption of sugar-sweetened beverages (SSB), obesity, and Type 2 diabetes, recognized by multiple studies, for example this survey (1).
This article (2) compares the consumption of SSBs with that of artificially sweetened beverages, and finds SSBs significantly worse. The study, however, is only a 10-week ...
The PubChem article you linked (National Center for Biotechnology Information, n.d.) stated that
When heated to decomposition this compound emits very toxic fumes of SOx and NOx. It may also emit toxic fumes of carbon and COx. (NTP, 1992)
So what is the required heat for decomposition?
Saad, et al. (2014) points out that
Saccharin decomposes at 228°C [442....