Selenium / Brazil Nuts
  In RCTs, a decreased risk of all cause mortality  was seen with antioxidant mixtures when selenium was part of the mix  (RR: 0.90; 95% CI: 0.82, 0.98; P = 0.02). A single intake of Brazil nuts (20 or 50 g) caused a significant decrease in inflammatory markers  such as serum IL-1, IL-6, TNF-α, and IFN-γ levels (P < 0.05). Improved lipid profile  of healthy volunteers. Selenium supplementation decreased serum CRP  (SMD = −0.48; 95% CI, −0.96 to 0; p = 0.049) and increased glutathione peroxidase  (SMD = 0.5; 95% CI, 0.36–0.64; p < 0.001). Selenium supplementation inhibits IGF-1 signaling  and confers methionine restriction-like healthspan benefits to mice. Selenium supplementation mitigates the toxic effects  of environmental mercury, lead, arsenic, and cadmium by forming an insoluble complex (chelate) with these metals and reversing the oxidative damage. Selenium supplementation improved semen parameters  in males. 2 Brazil nuts per day  provide optimal intake (there is ...