## Abstract
Results show that the attenuation values on CT scans after 3 months of the diet were increased for each patient. This observation indicates that the level of diffused fat in the liver had decreased. [PERSON] et al. [5] evaluated epidemiologic evidence for an association between abdominal fat and liver fat content. They state that some studies using waist circumference to estimate abdominal fat mass suggested a direct association between abdominal fat and liver fat content. Other studies using imaging methods suggested a direct association between intraabdominal fat and liver fat content, but not between subcutaneous abdominal fat and liver fat content. In conclusion, clinical and epidemiologic studies of abdominal fat and liver fat content suggest a direct association between abdominal fat and liver fat content, which is probably accounted for by visceral fat. Many researchers have attempted to study the relationship between obesity and fatty liver diseases to provide more clarification about the concerned correlation [13, 14, 15]. By reviewing their obtained results (regardless of the size and nature of the employed data and the method used), it can be noticed that there is some similarity. Table 1 shows the method used, the size of the data set, and the results of each study. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Research** & **Method** & **Data Set** & **Results** \\ \hline \multirow{2}{*}{D\(\acute{\text{a}}\)[PERSON] et al. [13]} & Ultrasound; & 181 Subjects: 113 female and & \multirow{2}{*}{\begin{tabular}{c} Visceral fat is a determinant factor \\ of increased non-alcoholic fatty \\ liver disease. \\ \end{tabular} } \\  & manually manipulating & 68 male (15 to 17 years old) & \\ \hline \multirow{2}{*}{[PERSON] et al. [14]} & \multirow{2}{*}{CT; manually manipulating} & 414 Subjects: 160 male and & \multirow{2}{*}{\
\begin{tabular}{c} Fatty infiltration of the liver was \\ correlated with total fat, and \\ visceral fat was more strongly \\ associated with fatty liver than \\ subcutaneous fat. \\ \end{tabular} } \\  & CT; manually manipulating & 38 Adult subjects: 22 male and & \multirow{2}{*}{
\begin{tabular}{c} Visceral fat is directly associated \\ with liver inflammation and \\ scarring in the \\ metabolic syndrome. \\ \end{tabular} } \\  & Fatty liver: RT camera. & 16 female (39 to 63 years old) & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Obesity and fatty liver correlation study comparison. [PERSON] et al. [16] investigated the correlation between obesity and NAFLD using the weight, BMI, and excess weight of a data set of subjects as measurements for obesity. They stated that NAFLD was closely correlated with type 2 diabetes (T2 DM), insulin resistance, and dyslipidemia (LDL cholesterol), but was not with the size of the patient (weight, BMI, and excess weight). Using the size of the patient as a measurement of the abdominal fat has a few limitations. Size is an indirect and imperfect measurement of obesity, and it does not distinguish between total body fat and lean body mass; it is not an accurate predictor of the body fat in the elderly, and at the same BMI, it has been found that body fat depends on the sex and race of the subject [17]. Therefore, using weight, BMI, or excess weight as a measurement of the accumulation of fat in the abdomen region of the human body is not an accurate measure. In contrast, CT and magnetic resonance imaging (MRI) are accurate techniques, and they allow for the measurement of specific body fat compartments, such as abdominal fat, visceral fat, and subcutaneous fat [17]. Generally, experts and physicians believe that the quantity of abdomen fat accumulation and the diffusion of fat in the liver are proportional (more accumulation of abdomen fat leads to a higher degree of diffusion of fatty liver disease). There is a hypothesis that visceral fat produces free fatty acids, which exposes the liver to fat accumulation [18].