Assessing cancer mortality in high natural background radiation areas: a systematic review

Introduction: Low background radiation levels are constantly around us, but generally there are some high natural background radiation areas (HNBRAs) in the world including Ramsar in Iran, Guarapari in Brazil, Kerala in India, Arkaroola in Australia, and Yangjiang in China. The present study aims to explore the relationship between living in HNBRAs and cancer mortality rate. Materials and Methods: A perfect search was conducted in Google Scholar, Scopus, PubMed, and databases and articles with the key terms "High natural background radiation", "cancer prevalence in HNBRAs", " natural radiation" and " mortality" using MeSH. Results: The results of this study are based on articles published in national and international journals, dissertations, and reference sites. In a total of 156 documents, 33 (21.15%) were selected. Conclusion: More recent studies have highlighted the absence of any direct connection between high natural background radiation and the prevalence of cancer in people living in HNBRAs. Some studies have suggested that low natural background radiation is not only harmless but may be beneficial to health through adaptations, while others believe that even the smallest doses of radiation are harmful

Effect of functional resistance training on the structure and function of the heart and liver in patients with non-alcoholic fatty liver

Abstract The current study is of the quasi-experimental type, with a pre-and post-test design, and subjects were randomly assigned to one of two groups: control (n = 8) and experimental (test) (n = 8). Based on the patient's self-report and using daily diet control tables, the patient's diet planning percentage of energy supply was managed and controlled for 3 days. The protocol for functional resistance training for these circular exercises, including the squat, lunge, bear crawl, rock press, jumping jack, and back fly lunge, was performed three times per week without specialized apparatus. Ejection fraction (EF) and fractional shortening (FS) were measured before and after functional resistance training, using echocardiography. Liver Stiffness and steatosis were measured using FibroScan, and the liver function was determined using biochemical assays. The average age of patients in the control group and the test group were 46.02 ± 5.4 and 48.6 ± 2.51, respectively. Pre-test and post-test of the body mass index were 32.06 ± 5.06 and 30.02 ± 3.97, and for the body fat percentage were 33.65 ± 6.09 and 25.41 ± 4.99. In non-alcoholic fatty liver patients, due to functional resistance training, EF (p-value = 0.003) and FS (p-value = 0.03) significantly increased, and C-reactive protein (Hs-CRP) (p-value = 0.001), steatosis (p-value = 0.04), and stiffness (p-value = 0.01) decreased. According to the results and without considering clinical trials, functional resistance training affects the structure and function of the heart and Liver in NAFLD patients