Antibiotics may also contaminate the meat and animal products for human consumption as antibiotic residues can pass into the human body causing various illnesses like stomach disorders, diarrhoea, vomiting, allergies, etc., and triggering carcinogens. n2. Like, chloramphenicol residues from fish—even in lower dosages—can increase the risk of cancer and aplastic anaemia, a disease that prevents the bone marrow from producing R.B.C. and WBC. Sulfamethazine, furazolidone, and oxytetracycline antibiotics residues may trigger a disease like cancer.n3. Overuse of essential antibiotics also results in developing antibiotic-resistant strains of bacteria that may survive in the presence of antibiotics. These bacteria can pass into the human system via animal products and colonise the intestinal gut making the average microbiota resistant.