Seems like some pretty common preservatives are linked to T2D. While I make a lot of things fresh... you can hardly buy food without preservatives, unless you go for the more expensive biological food.
Common food preservatives linked to higher risk of type 2 diabetes
Foods that rely heavily on preservatives may be doing more than extending shelf life. In a large study spanning more than a decade, people with the highest intake of preservative additives were far more likely to develop type 2 diabetes. The increased risk appeared across many commonly used...
www.sciencedaily.com
Diabetes Cases and Risk Increases
Over the study period, 1,131 cases of type 2 diabetes were identified among the 108,723 participants.
Compared with people who consumed the lowest levels of preservatives, those with higher intake showed a markedly increased risk of developing type 2 diabetes. Overall preservative consumption was linked to a 47% higher risk. Non-antioxidant preservatives were associated with a 49% increase, while antioxidant additives were linked to a 40% higher risk.
Specific Preservatives Associated With Risk
Among the 17 preservatives examined individually, higher intake of 12 was associated with an increased risk of type 2 diabetes. These included widely used non-antioxidant preservatives (potassium sorbate (E202), potassium metabisulphite (E224), sodium nitrite (E250), acetic acid (E260), sodium acetates (E262) and calcium propionate (E282)) as well as antioxidant additives (sodium ascorbate (E301), alpha-tocopherol (E307), sodium erythorbate (E316), citric acid (E330), phosphoric acid (E338) and rosemary extracts (E392)).