Huo ni ukweli..Cancer inasababishwa na ,pamoja na sababu zingine,na kemikali ziitwazo carcinogens ambazo zina uwezo wa kuactivate cancer causing genes (proto-oncogenes) au kudeactivate cancer inhibiting genes(tumor suppresor genes)
Some of the well known carcinogens ni polymers contained in plastic material
Hivyo mie naona kuna ukweli hapo!!!