It has been associated with many factors such as age, gender, and body mass index, as well as other demographic and psychological factors (Johansson, et al., 2001). Several studies have found that obese subjects tend to underestimate their energy intake more often and more severely than lean subjects (Johnson, 2002). Although there are various methods of assessing diet, there is no ideal tool to accurately measure nutritional status (Olafsdottir, et al., 2006). Each method has advantages, biased and correlated errors, and practical difficulties to consider when choosing one method over another (Thompson & Byers, 1994, Olafsdottir, et al..,