GSTM1 and type 2 diabetes mellitus: The stress caused by the war also affected the lability of carbohydrate indicators in patients with type 2 diabetes, so the patients of the 2nd group recorded an increase in average fasting glucose values ​​by 0.5 ± 0.72 mmol/l (p = 0.006), an increase in postprandial glucose by 0.85 ± 0.84 mmol/l (p = 7.392e-05 < 0.05); an increase in Hb A1c by 0.99 ± 0.57 mmol/l (p = 1.795e-07 < 0.05), in comparison with the indicators for the 1st observation period (October 2021-February 2022).