According to the famous saying of the medieval physician Paracelsus, "There is no substance without poison. Only the dose determines the extent of the toxic effect." Here, the effect of monosodium glutamate (MSG) on human health and the risks to the health of its frequent use in the short term was addressed and the long term was evaluated according to the studies of several researchers specializing in this regard. Monosodium glutamate (MSG) is known as one of the most popular food additives that classified as a flavor enhancer. Parts of the evidence were reviewed from the literature explaining its effect on immune system cells in addition to metabolic disorders by exposing individuals to obesity and what is known as metabolic syndrome, as well as reviewing a lot of evidence indicating the effect of MSG intake on the health of the kidney, liver and other parts of the body through Practical application to laboratory rats and clinical studies in humans.

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Nitrate contamination of drinking water is one of Iraq's environmental problems in some of its most vital lands as a result of sewage sedimentation, agricultural fertilizer waste, and remnants of war. Iraqi egg waste (bio-calcium Iraqi eggshells) was tested to remove nitrates, which is considered one of the best investments to achieve industrial sustainability on the one hand and reduce environmental problems on the other. The optimum conditions for removal were pH = 6, 120 min, 0.5 g Iraqi eggshells, and 150 rpm where 95.73% of nitrates were removed by Iraqi eggshells. The equilibrium data analysis determined that the (Langmuir isotherm) model was the best for describing adsorption, while (pseudo-second-order) adsorption kinetics were significantly appropriate for demonstrating nitrate adsorption kinetics, and a statistical model for nitrate removal percentage was developed.