Investigating the Effect of Phthalate Esters – Dimethyl Phthalate and Diethyl Phthalate (EDCs) in Waste Plastic Materials and Used Engine Oil

The increasing environmental presence of phthalate esters, particularly Dimethyl Phthalate (DMP) and Diethyl Phthalate (DEP), derived from waste plastic materials and used engine oil, has raised concerns about their potential health effects. This study investigates the routes of exposure, bio-metabolism, and toxicological impact of DMP and DEP, focusing on their endocrine-disrupting properties. Phthalates are semi-volatile organic compounds used in a variety of consumer products, leading to widespread human exposure via ingestion, inhalation, and dermal contact. These compounds have been found to leach into food, water, and personal care products, making exposure nearly inevitable. Once absorbed, DMP and DEP are rapidly metabolized and excreted, yet their disruption of hormone signalling pathways poses significant health risks, particularly to the reproductive systems of both males and females. The study highlights adverse reproductive effects, including reduced sperm quality, hormonal imbalances, and ovarian dysfunction, and emphasizes the teratogenic and carcinogenic risks associated with prenatal and chronic exposure. Furthermore, phthalates have been linked to developmental abnormalities, neurotoxicity, and a higher incidence of certain cancers. As DMP and DEP are commonly detected in the environment and human tissues, this research underscores the need for stringent regulatory measures and further investigation into their long-term health impacts.