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The COVID-19 pandemic has caused significant mortality and morbidity worldwide. However, the role of dietary patterns as a potential risk factor for COVID-19 has not been well established, especially in studies with large samples. Therefore, this study aims to identify and evaluate the association between major dietary patterns and COVID-19 among adults from Iran.

In this cross-sectional study, the authors included 9,189 participants aged 20–70 who participated in the Yazd Health Study (YaHS) and Taghzieh Mardom-e-Yazd study (TAMIZ). They used factor analysis to extract dietary patterns based on a food frequency questionnaire (FFQ). Then, they assessed the relationship between these dietary patterns and the odds of COVID-19.

This study identified two major dietary patterns: “high protein and high fiber” and “transitional”. Participants in the highest tertile of the “high protein and high fiber” dietary pattern, which included vegetables, fruits, dairy and various kinds of meats such as red meat, fish and poultry, had a lower odds of COVID-19 compared with those in the lowest tertile. However, the “transitional” dietary pattern did not affect the risk of COVID-19.

In conclusion, a “high protein, high fiber” diet may lower the odds of COVID-19. This study suggests that dietary patterns may influence the severity and spread of future similar pandemics.

The purpose of this study was to evaluate the association of empirically derived dietary patterns with hypertension and hyperlipidemia among a large sample of Iranian industrial employees.

This cross-sectional study was done under the framework of Epidemiological Survey of Chronic Diseases on Manufacturing Employees. Major dietary patterns were derived based on a validated short form of food frequency questionnaire (FFQ) using exploratory factor analysis. Self-administered validated questionnaires were used to collect data on socio-demographic and job-related variables of participants. Multivariable logistic regression was applied for association analyses.

Higher levels of Western dietary pattern increased significantly the risk of hypertension (odds ratio [OR] = 1.85, 95% CI [1.36-2.53], P trend <0.001) and hyperlipidemia (OR = 1.45, 95% CI [1.16-1.81], p = 0.001) even after controlling for confounding variables. The traditional dietary pattern was marginally associated with a significant increase in risk of hyperlipidemia ( = 1.14, 95% CI [0.92-1.41], p = 0.084) in the fully adjusted model. However, higher levels of healthy dietary pattern were significantly associated with a decreased risk of hyperlipidemia in the final model (OR 0.80, 95% CI [0.64-0.90], p = 0.025).

To the authors’ knowledge, an association analysis between dietary patterns and major cardiovascular disease risk in workforce population over the world is scarce and has not yet been conducted among Iranian industrial employees. This study’s findings are especially relevant for the industrial workforce population because they are at high risk of other job-related risks that increase the CVD risk.

Dietary patterns have been used to explore the association between dietary factors and risk of pancreatic cancer (PC) and renal cancer (RC); however, the association remains unclear. The purpose of this paper is to comprehensively review these associations.

Pertinent studies published prior to March 2016 were systematically searched and retrieved through PubMed and Scopus databases. Adjusted risk estimates were derived by comparing the highest with the lowest categories of dietary pattern scores and were combined by using the fixed-effects model when no substantial heterogeneity was observed; otherwise, the random-effects model was used.

A total of nine studies, five for PC (including 2,059 cases and 41,774 participants/controls) and four for RC (with 1,327 cases and 53,007 participants/controls), were included in this meta-analysis. A decreased risk of PC was shown for the highest compared with the lowest categories of the healthy dietary pattern (OR = 0.72, 95 per cent CI = 0.51-0.94, random effects (p-value for heterogeneity = 0.004)), whereas no significant association with Western dietary was observed (OR = 1.16, 95 per cent CI = 0.87-1.44, fixed effects). In the overall analysis, a significant association was found between the healthy dietary pattern and reduced risk of RC (OR = 0.59, 95 per cent CI = 0.48-0.71, fixed effects (p-value for heterogeneity = 0.459)), whereas the Western pattern was positively associated with risk of RC (OR = 1.42, 95 per cent CI = 1.14-1.69, fixed effects). For both cancers, the reduced risk associated with the healthy pattern was restricted to case-control, but not cohort, studies. Furthermore, drinking pattern was significantly related to reduced risk of RC (OR = 0.68, 95 per cent CI = 0.42-0.94).

To the authors’ knowledge, the present study is the first English document to summarize systematically the findings from observational studies in response to this question whether a posteriori dietary patterns are associated with susceptibility to the risk of renal and ovarian cancers.

This paper aims to understand the association of dietary patterns with perceived fatigue and identify predictors for presence of fatigue in women who are obese and trying to lose weight.

An online survey, hosted by slimming world (SW), comprised of a questionnaire regarding weight, level of fatigue and food frequency questionnaire before joining the weight management programme (T0) and current data (T1) was conducted. In total, 543 non-pregnant women with obesity of child-bearing age (19-49 years) completed the survey (T0-T1). The principal components analysis was used to determine dietary patterns and multinomial logistic regression was used to analyse predictors for presence of fatigue.

The participants who have a “simple carbohydrate and high fat” dietary pattern were more likely to have fatigue at T0 (p ≤ 0.001) and those who followed a “vegetables” dietary pattern were less likely to have fatigue at T1 (p ≤ 0.05). The study findings indicate that while “simple carbohydrate and high fat” dietary pattern was associated with increased risk of fatigue, “vegetables” dietary pattern was associated with reduced risk of fatigue and a higher percentage of weight loss.

The present study appears to be the first study to examine associations between dietary patterns and fatigue. The strengths of the study included the in-depth analysis of this association in both before joining a weight management programme (SW) and currently as a member of SW with an adequate sample size.

Due to the increase in the prevalence of other risk factors of heart diseases, the age of heart disease has decreased and it has led to premature heart disease. One of the main risk factors of this disease is metabolic syndrome (MetS). One of the key ways to control MetS is dietary modification. The purpose of this study is to investigate the relationship between dietary patterns and MetS in patients with premature heart disease.

This study was conducted on 409 people with premature heart disease. The diagnosis of MetS was made based on the ATP III criteria. Dietary intake for the past year was collected using the validated semi-quantitative food frequency questionnaire. Dietary patterns were determined by factor analysis with principal components approach.

Three dietary patterns were identified, including the healthy, western and traditional patterns. The findings showed that people who followed the traditional pattern more than those who followed less had a lower risk of MetS. (OR:0.23; 95% CI: 0.11–0.52). But, no relation was observed between healthy (OR:1.45; 95% CI:0.64–3.25) and western (OR:1.04; 95% CI:0.51–2.13) patterns with MetS.

The findings of this study showed that following a traditional dietary pattern based on high consumption of whole grains, red meat, viscera, fish, eggs, high-fat dairy products, soft drinks, mayonnaise and solid oil was associated with a lower risk of MetS.

This paper aims to evaluate macro- and micronutrient intake among Jordanian adults who have metabolic syndrome (MetS) and those MetS-free.

A total of 154 Jordanian adults aged 20-55 years were enrolled from The National Center for Diabetes, Endocrinology and Genetics in this case control study. In total, 77 newly diagnosed cases of MetS and 77 controls were recruited and matched by age and sex. Dietary data were collected by face-to-face interview using a validated food frequency questionnaire.

After adjustment of the energy intake and macronutrients, the cases reported significantly higher intake of the amount of protein (p < 0.001), carbohydrates (p < 0.001), fiber (p < 0.001), sugar (p < 0.001), fat (p < 0.001), saturated fat (p < 0.001), monounsaturated (p < 0.001), polyunsaturated (p < 0.001), trans-fat (p < 0.029), omega-3 (p < 0.001) and omega-6 (p < 0.001) as compared to the controls. The results also showed that the intake of some micronutrients was significantly higher among cases when compared to the controls. In this study, three dietary patterns have been itemized; “fast food dietary pattern”, “Mediterranean dietary pattern” and “high-protein dietary pattern”. Only a direct significant trend between MetS and fast food pattern was detected (p-trend = 0.001). Neither significant associations nor trends were detected in the Mediterranean and high-protein patterns with MetS risk.

The study findings highlighted the presence of associations between fast food dietary pattern, total energy and some macro- and micronutrients intake and the risk of MetS among population living in the Middle East. Even though the findings of this study bridge the gap between theory and practice, a large scale population-based study is warranted to confirm these findings.

This paper aims to investigate whether the interaction between vitamin D receptor (VDR) FokI polymorphism and dietary patterns is associated with metabolic syndrome (MetS) and its components.

In total, 304 Iranians were enrolled in this cross-sectional study. Dietary patterns were identified using factor analysis. Fasting serum glucose and lipid profile were also assessed. FokI polymorphism of the VDR gene was genotyped using the restriction fragment length polymorphism method.

Individuals in third tertile of “Unhealthy Patterns had greater odds for MetS (odds ratio: 2.9; 95 per cent CI: 1.3, 6.1; P for trend = 0.03) compared to those in first tertile. Significant results disappeared after controlling for covariates (p = 0.09). There was no significant relationship between adherence to ‘Healthy Pattern’ and odds of MetS (p = 0.55). There were not any interactions between FokI polymorphism and major dietary patterns associated with MetS.

No evidence found for the interaction between polymorphism FokI and major dietary patterns associated with MetS and its components in Iranian subjects. Genome-wide association techniques are needed to assess the direct effect of this polymorphism on MetS.

The purpose of this paper is to examine the associations of dietary patterns with sociodemographic and lifestyle characteristics in a cardiometabolic risk population.

In this cross-sectional study data from 295 (n=123 men/172 women, 42±16 years) participants in a Cardiovascular Health Care Program were included. After a 24-hour recall interview the dietary patterns were determined using principal component analysis. Sociodemographic, clinical and lifestyle data were collected by medical records.

Subjects with diabetes and hypertension had a higher adherence in the “traditional” pattern (rice, beans, tubers, oils and meats). Poisson regression models showed that male subjects with low schooling and smokers had greater adherence to the “traditional” pattern. Also, students, women, and those with higher schooling and sleeping =7 h/night showed higher adherence to healthy patterns (whole grains, nuts, fruits and dairy). Women, young adults and those with higher schooling and fewer sleep hours had greater adherence to healthy dietary patterns. Those with low schooling and unhealthy lifestyle showed more adherence to the “traditional” pattern.

The results indicate the importance to personalized nutritional therapy and education against cardiometabolic risk, considering the dietary patterns specific to each population.

Socioeconomic and lifestyle characteristics can influence dietary patterns and this is one of the few studies that investigated this relationship performing principal component analysis.

This study aims to identify the dietary patterns of two groups of subjects (with and without COVID-19), and to assess the relationship of findings with the prognosis of COVID-19 and metabolic risk parameters.

This study included 100 individuals in the age range of 19–65 years. The medical history, and data on biochemical, hematological and inflammatory indicators were retrieved from the files. A questionnaire for the 24-h food record and the food intake frequency was administered in face-to-face interviews, and dietary patterns of subjects were assessed.

In individuals with COVID-19, the hip circumference, the waist-hip ratio and the body fat percentage were significantly higher (p < 0.05), and the muscle mass percentage was significantly lower (p < 0.05). Mediterranean diet adherence screener (MEDAS), dietary approaches to stop hypertension (DASH) and healthy eating ındex-2015 (HEI-2015) scores were low in the two groups. A linear correlation of DASH scores was found with the muscle mass percentage (p = 0.046) and a significant inverse correlation of with the body fat percentage (p = 0.006). HEI-2015 scores were significantly and negatively correlated with body weight, body mass index, waist circumference, hip circumference and neck circumference (p < 0.05). Every one-unit increase in MEDAS, DASH and HEI-2015 scores caused reductions in C-reactive protein levels at different magnitudes. Troponin-I was significantly and negatively correlated with fruit intake (p = 0.044), a component of a Mediterranean diet and with HEI-2015 total scores (p = 0.032).

The limitation of this study includes the small sample size and the lack of dietary interventions. Another limitation is the use of the food recall method for the assessment of dietary patterns. This way assessments were performed based on participants’ memory and statements.

Following a healthy diet pattern can help reduce the metabolic risks of COVİD-19 disease.

Despite these limitations, this study is valuable because, to the best of the authors’ knowledge, it is the first study demonstrating the association of dietary patterns with disease prognosis and metabolic risks concerning COVID-19. This study suggests that dietary patterns during the COVID-19 process may be associated with several metabolic risks and inflammatory biomarkers.

The purpose of this paper was to review evidence spanning the relation of dietary habits and other lifestyles to the lipid profile of type 2 diabetes patients.

Search was done in PubMed, Biomed, Cochrane and Nutrition and Metabolism databases from 20 to 29 June 2013 for studies published on dietary intakes and lifestyle effect on lipid profile of type 2 diabetes patients.

A total of 54 studies met the inclusion criteria for this review. These included observational, randomized control trials, prospective, cross-sectional and retrospective studies. Studies obtained covered macronutrients, micronutrients, dietary pattern, specific foods and lifestyle (alcohol intake, smoking, physical activity level and fasting).

The review did not consider unpublished articles/findings, and only studies in the English language and on humans were considered.

The results of the review evidenced limited data on the lifestyle pattern of type 2 diabetes patients.

Dietary habits and other lifestyle patterns for a good lipid profile among type 2 diabetes patients have not been established.

The review demonstrates the need for studies in dietary pattern and other lifestyle patterns in relation to lipid profile of type 2 diabetes patients.