Delayed-type hypersensitivity (DTH) was considerably lower than that observed in US elderly especially to Trichophyton and tetanus toxoid [1 ] DTH is an in vivo indicator of cellular immune response status. Vitamin C and zinc concentrations were significantly associated with Interferon gamma (IFN-γ) concentrations [1]. Serum iron and zinc were significantly associated with Interleukin 2 (IL-2) levels [1]. Since IFN-γ and IL-2 are T-dependent cytokines these correlations suggest that deficiency of those micronutrients may explain the impaired cellular immune response as assessed by DTH. High plasma CRP (>3 mg/l) was present in 49% of the participants, which could be a proxy of increased pro-inflammatory cytokines [11]. There was no correlation between protein, carbohydrate, or lipid intake and immune response or infection.