I Phiona M Mametja, born on 20 Oct 1996 matriculated in 2014 at Sefoloko Sec School. Currently at Sefako Makgatho Health Sciences University, where I obtained a degree in Bsc life science and an honors degree in zoology now doing my master's degree in zoology also a lab tech(swab aid) at Lancet laboratories to establish a diagnosis. My research work focuses on the health risk and factors associated with the level of trace metals in breast milk so as to establish prevention of these trace metals from affecting children.