This study investigated the levels of anti-nutritional substances and potassium bromate (KBrO3) in unlabelled bread samples from Oko town and its surrounding areas. Standard methods were used to analyze ten samples, revealing that eight exceeded the recommended KBrO3 level of 0.02 mg/kg set by the US Food and Drug Administration. Elevated levels of cyanides, oxalates, and tannins were also detected, posing health risks including cancer, kidney damage, and cellular oxidation inhibition.