Quantitative measurements of 5 detected metals in blood samples of oligozoospermic males of different age groups. Mean bar values of 1, 2, 3, 4 and 5 show mean concentration of Cd, Cr, Pb, Cu, and Zn respectively in age groups 18-23, 24-29, 30-35, 36-41, 42-47 and above-47, Dark blue, Blue, Light blue, Yellow, Pink-red and Dark-red bars are for 18-23, 24-29, 30-35, 36-41, 42-47 and above-47 years of age groups, respectively.