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Introduction and Aim: Nonalcoholic fatty liver disease (NAFLD) is closely associated with overweight and obesity, becoming one of the most prevalent hepatic diseases nowadays. Circulating hemoglobin (Hb) concentration is significantly higher in people with NAFLD, compared to healthy patients. While liver biopsy remains the gold standard for NAFLD diagnosis, it is not the best technique due to adverse events that may occur. Therefore it is important to find less invasive and more sensitive markers. This study aimed to determine the association of serum Hb levels in patients with steatosis and fibrosis as a noninvasive marker., Material and Methods: A 1,186 patient cross-sectional study nested in a randomized clinical trial (NCT01874249) was conducted. Patients were diagnosed by ultrasound for hepatic steatosis and fibroscan for fibrosis; blood test and anthropometric measurements were also assessed., Results: Serum Hb increased proportionally related to the steatosis level, being significantly higher in patients with severe steatosis than in patients with moderate and mild steatosis., Conclusion: Patients with non-alcoholic fatty liver disease showed elevated levels of circulating Hb, evidence that suggests that Hb exerts a protective role, as it may act as an antioxidant and may counteract the adverse effects of this disease.

"The purpose of this work is to explore the advantages and disadvantages of... Mexican immigrant workers for the economy and the political and cultural status quo of the United States. The Mexican immigrant workers pose a dilemma for the United States. On the one hand, the United States needs them for a better functioning of its economy. On the other, the Mexican immigrant workers represent a racial, cultural and political challenge to the American 'establishment'.... Given the magnitude of the problem which the Mexican immigrants represent and the intense debate surrounding it, the cheap labour they represent for the economy of the United States and the unsolved conflicts this provokes, are fertile ground for the analysis of the economic, political and cultural interests competing for the degree of flexibility or the amount of policing the Mexican border should have." (SUMMARY IN ENG AND FRE), (excerpt)