Özlem Özpak AKKUŞ, Meltem MERMER, Ramazan GEN, Mehmet Burak Yavuz ÇİMEN, Antonios KOUTELIDAKIS, İhsan DÖNMEZ
Journal of Surgery and Medicine - 2026;10(1):7-14
Background/Aim: The aim of this study is to determine the dietary total antioxidant capacity (DTAC) values and levels of certain serum oxidative parameters in individuals with previously and newly diagnosed type 2 diabetes and to evaluate the impact of these findings on glycemic values and metabolic parameters. Methods: This study was conducted with a total of 97 participants aged 19-64, comprising 35 individuals with a previous type 2 diabetes diagnosis, 32 individuals with a recent type 2 diabetes diagnosis, and 30 healthy participants. During face-to-face interviews, participants provided descriptive information, physical activity levels, and anthropometric measurements. DTAC was calculated from three-day dietary intake records using various methods. Serum samples were collected for the analysis of glycemic, lipid, and oxidative parameters. Results: The results show that DTAC values (specifically derived from total radical-trapping antioxidant potential (TRAP) and total phenolics (TP) values)) and serum TAC levels tend to decrease with both prolonged diabetes age and when compared to individuals without diabetes (P<0.05). DTAC values were found to have a significant effect on some oxidative parameters like TAC, paraoxonase 1, and arylesterase (P<0.05), while serum oxidative parameters were found to have no significant effect on glycemic and lipid parameters. Conclusion: It was concluded that low DTAC may be a risk factor related to oxidative stress depending on type 2 diabetes and diabetes age.
