Obesity is becoming an inevitable pandemic all over the world.The World Obesity Federation predicts in the 2022 World Obesity Atlas that one billion people worldwide,including 1 in 5 women and 1 in 7 men,will be living with obesity by 2030.Moreover,the prevalence of diabetes is increasing worldwide,and diabetes is becoming more of a public health problem.Increased insulin resistance due to obesity and deficiency in insulin secretion are the two main causes of type 2 diabetes mellitus(T2DM).An exogenous chemical or mixture of chemicals that interferes with any aspect of hormone action was defined as endocrine-disrupting chemicals(EDCs).Bisphenol A(BPA),the first known EDC,was synthesized and was considered to be estrogenic.Global production of BPA has increased progressively from 5 to 8 million tons(MT)between 2010 and 2016.Furthermore,researchers estimated that the production should reach 10.2 MT by 2022.The human population is exposed to EDCs in daily life in such forms as pesticides/herbicides,industrial and household products,plastics,detergents,and personal care products.The term obesogen was used for chemicals that promote weight gain and obesity by increasing the number of adipocytes and fat storage in existing adipocytes,changing the energy balance,and finally regulating appetite and satiety.Besides the obesogenic effect,EDCs can cause T2DM through alteration inßcell function and morphology and insulin resistance.In this review,we provide clinical and mechanistic evidence regarding EDCs as obesogen and diabetogen.However,those studies are not enough methodologically to indicate causality.In this respect,randomized clinical trials are needed to investigate the association between obesogen,diabetogen and the related metabolic clinical picture.
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