The health effects of chemical exposure depend not only on the hazard itself, but also on the body’s capacity to defend, adapt, and recover. This varies between individuals and is strongly shaped by nutritional status, making nutrition a foundational determinant of occupational health risk. Adequate nutrition supports immune function, metabolic regulation, tissue repair, and detoxification processes. Sufficient energy, protein, essential minerals, micronutrients, and antioxidants are required for the body to maintain physiological stability and respond effectively to harmful substances. When these nutritional needs are met, workers are better equipped to withstand and recover from ongoing occupational exposures.