Introduction: Western lifestyle characterized by increased consumption of red meat, fat, processed food, smoking, alcohol drinking, lower consumption of vegetables and physical inactivity has been associated with a higher gastrointestinal cancer risk. Digestive system cancers are diagnosed at late stages when they show poor response to treatment and are associated with a high mortality rate. Colorectal, gastric, esophageal and pancreatic cancers are among the most common cancers worldwide. Studies show that more than 50% of gastrointestinal cancers develop as a result of inappropriate lifestyle. An inverse association between physical activity and many chronic diseases has been proved so far. However, the association between physical activity and some gastrointestinal cancers is still controversial. This study was aimed to determine the association between physical activity and gastrointestinal cancers risk. Methods: We conducted a comprehensive search of English and Persian databases from February 2007 till December 2017, for studies investigating the association of physical activity and risk of gastrointestinal cancers. Finally, after reading full text of articles, 123 studies were included. Results: Physical activity can be helpful in reducing the risk of gastrointestinal cancer, especially colon and pancreatic cancers. The risk reduction is not similar for different types of gastrointestinal cancers and also among males and females. Conclusion: Different types of physical activity are associated with a lower risk of gastrointestinal cancer. However, it is unknown which type and intensity of physical activity are associated with a protective effect against gastro-intestinal cancer.
: SARS-CoV-2, the pathogen responsible for COVID-19, has infected hundreds of millions since its emergence in late December 2019. Recently, concern has been raised due to the increased prevalence of co-infections with opportunistic pathogens among these patients. Though not common, co-infections may be associated with adverse outcomes and increased risk of morbidity and mortality among patients suffering from COVID-19. Cytomegalovirus (CMV) infection is a serious problem among immunocompromised and critically ill patients. So far, few cases of co-infection with COVID-19 and CMV have been reported. Here, we report the co-infection with COVID-19 and CMV in a young woman presenting with sudden, progressive fever, delusion, agitation, bizarre behavior, seizure, and loss of consciousness leading to death despite receiving appropriate anti-viral treatment. To the best of our knowledge, this is the first case of coexisting SARS-CoV-2 and CMV infection presenting with severe, progressive meningoencephalitis in the era of COVID-19.
Objective: Inappropriate starting of complementary feeding is an important factor leading to infant growth delay and malnutrition. This study was aimed to determine the complementary feeding pattern and some related factors in health care centers in Khorramabad. Methods: This cross-sectional study, included 300 one year old infants who had referred to nine health care centers in Khorramabad by multistage sampling. In present study, we used a questionnaire included individual information about mothers and infants and a checklist for evaluating breastfeeding and complementary feeding. Chi-square test and one way ANOVA were used to analyze the data. Results: In present study, 50.7% of infants were girls and 60.3% of cases were the first infant in their family. 59.3% of infants were delivered by cesarean. Average age of starting complementary feeding was 0.5 8.5. 75.7% of infants had exclusive breastfeeding up to first six months of their life. Among most cases, the first complementary food was rice flour porridge (29.3%) and almond porridge (15.7%). Most mothers had acquired necessary information about complementary feeding by using booklets (20.7%) and physician guidance (16.7%). There was a statistically significant relationship between age of starting complementary feeding and mother’s education (P=0.043) level and employment status (P=0.001). Conclusion: Related authorities should begin comprehensive and effective education by using novel training strategies to raise mothers' knowledge about age of starting complementary feeding and how to do it at health care centers.
On 25 November 2021, the world health organization listed Omicron as a newly arisen and the fifth variant of concern (VoC) of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The genome sequence of Omicron showed the utmost number of mutations compared to other known VoCs up to now, and it was regarded as the only SARS-CoV-2 variant with changes in the receptor-binding domain (RBD). However, the Omicron is still detectable via previous polymerase chain reaction (PCR) tests. Clinical presentation of the disease is identical to previous VoCs, however in vitro and in vivo studies revealed a higher transmission rate. The biggest obstacles posed by Omicron are the immune escape and reduction in vaccine effectiveness, as indicated by many simulations and real-world studies. Although the efficacy of the two-dose vaccinations is suboptimal for Omicron, preliminary studies have considered the injection of a booster shot is beneficial and can decrease the risk of severe disease. All these new features of Omicron warranted close investigation of this VoC as a new chapter in the pandemic, especially with emersion of subvariants BA.4 and BA.5. This review presents a conspectus of the current knowledge on the COVID-19 Omicron variant biological, clinical, and epidemiological changes.
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