“Non-alcoholic fatty liver disease” is the alarming health risk around the world today. Nearly 1/3 of the world’s population is affected by non-alcoholic fatty liver disease. Many scientists put forward two hit hypotheses to explain the pathophysiology of non-alcoholic fatty liver disease. With the aid of trials using Biopsy, ultrasound scan and molecular techniques, scientists explained an authentic evidence of non-alcoholic fatty liver disease progression is ultimately because of obesity and its commodities, such as Cardio vascular diseases, Diabetes and Metabolic syndrome. This review mainly focuses on how obesity leads to non-alcoholic fatty liver disease based on statistical analysis of different research studies conducted by the research scientists. In the analysis of 1980-2003, out of 505 individuals, 305 were affected with NAFLD and among them, 64.3% were obese. In the analysis of the period of 1996-2002, out of 550 NAFLD patients, 70.36% were obese. Also in the analysis of 2010-2015 period of time, mostly 90% of the NAFLD patients were obese. It was also revealed that, along with NAFLD and obesity, diabetes and hyperlipidemia also exist as the commodities of obesity. Attention of medical field is towards the treatment and analysis of non-alcoholic fatty liver disease which is expected to be the reason of liver transplant by 2020.
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