Dietary total antioxidant capacity of Moroccan Type 2 Diabetes Mellitus patients.

AIMS: A new approach to a healthy diet is the assessment of dietary Total Antioxidant Capacity (TAC). The aim of this study was to assess the dietary TAC among Moroccan Type 2 Diabetes Mellitus (T2DM) patients and identify the main food sources contributing to the total antioxidant capacity intake. METHODS: A total of 254 patients with T2DM was included in the study. The usual dietary intakes were assessed by means of a validated food frequency questionnaire. The dietary TAC was estimated using published databases of the antioxidant content of foods measured by the FRAP (ferric ion reducing antioxidant potential) method. RESULTS: The mean (SD) dietary TAC of the studied type 2 diabetes patients was 10.86 (3.42) mmol/day. Correlation analyses showed a positive association between dietary TAC and the consumption of healthy food groups, such as fruits and vegetables. Tea and coffee beverages (38.6%), vegetables (21.9%), cereals and pulses (18.8%), fruits and fruit juices (12.4%) were major food sources of dietary antioxidant intake. The relatively short list of twenty food items that contributed most to dietary TAC presented an important explanation of roughly 94%. These included tea, coffee, broad beans, artichoke, pepper, beetroot, sweet potatoes, pomegranate, mandarin, figs, strawberry, orange juice, olives, cashew nuts, almonds, sunflower seeds, dchicha and white beans. CONCLUSIONS: This study supplies baseline dietary TAC data for Moroccan T2DM patients that may help to elucidate which aspects of the eating habits and behaviours require improvement and provide the opportunity to develop dietary guidelines as part of the nutritional diabetes management.

Cluster analysis of dietary patterns associated with colorectal cancer derived from a Moroccan case-control study.

INTRODUCTION: Colorectal cancer (CRC) is a global public health problem. There is strong indication that nutrition could be an important component of primary prevention. Dietary patterns are a powerful technique for understanding the relationship between diet and cancer varying across populations. OBJECTIVE: We used an unsupervised machine learning approach to cluster Moroccan dietary patterns associated with CRC. METHODS: The study was conducted based on the reported nutrition of CRC matched cases and controls including 1483 pairs. Baseline dietary intake was measured using a validated food-frequency questionnaire adapted to the Moroccan context. Food items were consolidated into 30 food groups reduced on 6 dimensions by principal component analysis (PCA). RESULTS: K-means method, applied in the PCA-subspace, identified two patterns: 'prudent pattern' (moderate consumption of almost all foods with a slight increase in fruits and vegetables) and a 'dangerous pattern' (vegetable oil, cake, chocolate, cheese, red meat, sugar and butter) with small variation between components and clusters. The student test showed a significant relationship between clusters and all food consumption except poultry. The simple logistic regression test showed that people who belong to the 'dangerous pattern' have a higher risk to develop CRC with an OR 1.59, 95% CI (1.37 to 1.38). CONCLUSION: The proposed algorithm applied to the CCR Nutrition database identified two dietary profiles associated with CRC: the 'dangerous pattern' and the 'prudent pattern'. The results of this study could contribute to recommendations for CRC preventive diet in the Moroccan population.

Association of Physical Activity and Sedentary Behavior with Colorectal Cancer Risk in Moroccan Adults: A Large-Scale, Population-Based Case-Control Study.

BACKGROUND: Physical activity has been associated with a lower risk of colorectal cancer in studies mainly conducted in high-income countries, while sedentary behavior has been suggested to increase CRC risk. In this study, we aimed to investigate the role of physical activity and sedentary behavior on CRC risk in the Moroccan population. METHODS: A case-control study was conducted involving 1516 case-control pairs, matched on age, sex and center in five university hospital centers. A structured questionnaire was used to collect information on socio-demographics, lifestyle habits, family history of CRC, and non-steroidal anti-inflammatory drug (NSAID) use. Information on physical activity and sedentary behavior were collected by the Global Physical Activity Questionnaire (GPAQ). For each activity (work, household, and recreational activities), a metabolic equivalent (MET) was calculated using GPAQ recommendations. Conditional logistic regression models were used to assess the association between physical activity, sedentary behavior and the risk of overall CRC, colon cancer, and rectal cancer taking into account other CRC risk factors. RESULTS: High level of physical activity was associated with lower risk of rectal cancer, colon cancer, and overall CRC, the adjusted odds ratios (ORa) for the highest versus the lowest level of activity were 0.67 (95% CI: 0.54-0.82), 0.77 (95% CI: 0.62-0.96), and 0.72 (95% CI: 0.62-0.83), respectively. In contrast, sedentary behavior was positively associated with rectal cancer risk (ORa=1.19, 95% CI: 1.01-1.40), but was unrelated to colon cancer risk (ORa=1.02, 95% CI: 0.87-1.20). CONCLUSION: We found an inverse association between physical activity and CRC risk in the Moroccan population, and a positive association between sedentary behavior and rectal cancer risk. Considering that one-third of the total population studied had a sedentary lifestyle, these results may be used to improve strategies of public health suitable for Moroccan population.

Food processing groups and colorectal cancer risk in Morocco: evidence from a nationally representative case-control study.

OBJECTIVE: The aim of this study was to investigate the association between the consumption of foods and drinks from different food processing categories using the NOVA classification and CRC risk among Moroccan adults. METHODS: 1453 cases and 1453 matched controls aged at least 18 years and recruited from the 5 greater Moroccan regions were interviewed by trained investigators about their habitual diet using a standardized food frequency questionnaire (FFQ). Foods were categorized according to their degree of processing by the NOVA classification. Intakes of each food processing group were categorized into tertiles based on the distribution of controls with the lowest tertile considered as the reference category. Multivariable conditional logistic regression models were used to assess the association between each group and CRC risk (Odds Ratio (OR) and 95% Confidence Intervals (CI)), taking relevant confounders into account. RESULTS: High consumption of unprocessed or minimally processed foods (NOVA group 1) was significantly inversely (OR = 0.82, 95%CI = 0.72-0.93), while high consumption of ultra-processed foods and drink products (NOVA group 4) was significantly positively (OR = 1.40, 95% CI = 1.22-1.61) associated with CRC risk as compared to the lowest intake group. These results were similar for colon and rectum sub-sites. CONCLUSION: This is the first study to evaluate the association between the NOVA classification groups and CRC risk in an African country. Our results suggest that the consumption of ultra-processed foods and drink products may be associated with an increased risk of developing CRC, but longitudinal studies are needed to confirm these results.

Association between obesity and chronic obstructive pulmonary disease in Moroccan adults: Evidence from the BOLD study.

OBJECTIVE: The Moroccan cross-sectional study aimed to investigate obesity in association to chronic obstructive pulmonary disease in Fez city. METHODS: A cross-sectional survey was carried out in Moroccan adults. Anthropometric and spirometry measurements were performed using standardized guidelines. RESULTS: Among the 744 participants, 53.9% of were women, with a mean age of 55.27 years (SD = 10.29). Nearly all women declared themselves to be never smokers, while 21% of men were current smokers. Overall, chronic obstructive pulmonary disease prevalence decreased with body mass index (p = 0.01) and waist circumference (p < 0.001). The same trends were also observed in women. The adjusted regression analysis showed a significant independent association between chronic obstructive pulmonary disease and decreasing overweight (ORa: 0.66; CI95% (0.40-0.98)), obesity (ORa: 0.66 CI95%: (0.36-0.89)), and a decreasing waist circumference-abdominal obesity (ORa: 0.58 CI95%: (0.34-0.99)) in the whole population. The same association remains significant in women for overweight (ORa: 0.18 CI95%: (0.06-0.54)) and for waist circumference-abdominal obesity (ORa: 0.40 CI95%: (0.19-0.85)). All these associations disappeared for men. CONCLUSION: Chronic obstructive pulmonary disease decreases with the increase in body mass index and waist circumference. The effect of waist circumference on the chronic obstructive pulmonary disease was greater among women, regardless of the tobacco factor. A multicenter study would help to confirm the accuracy of these findings in a larger sample of the Moroccan population. Developed lifestyle programs in patients with chronic obstructive pulmonary disease should be considered.

Extended healthy lifestyle index and colorectal cancer risk in the Moroccan population.

PURPOSE: Little is known about the combined effect of different lifestyle factors on CRC incidence among populations living in developing countries. In this study, we sought to create an Extended Healthy Lifestyle Index (EHLI) and to investigate its association with CRC risk in the Moroccan population. METHODS: A large case-control study including 1516 cases and 1516 controls, matched on age, sex and center were recruited in 5 Moroccan university hospital centers between 2009 and 2017. EHLI scores, including 9 modifiable factors (smoking, alcohol consumption, physical activity intensity, BMI, fruit and vegetables consumption, drinks that promote weight gain, red and processed meat, relatively unprocessed cereals and/or pulses, and dairy products consumption) were assigned to lifestyle information derived from the participants. We assessed the score based on the answers on each of the nine lifestyle components as unhealthy/un-compliant (0 point), healthy/compliant (1 point) and 0.5 for partial compliance to the recommendation. Conditional logistic regression models were used to assess the association between the EHLI and CRC risk and to estimate multivariate ORs and their 95% confidence intervals (CIs). All potential confounder variables were considered. RESULTS: After adjusting for potential confounding factors, a significant decrease in the risk of overall CRC was observed when comparing the highest EHLI category with the lowest index category (0.39, 95% CI: 0.33-0.47). These results did not differ by colon or rectum subsite. CONCLUSION: Combined healthy lifestyle factors are associated with a significantly lower incidence of CRC in Moroccan populations. Prevention strategies should consider targeting of multiple lifestyle factors.

Modified Mediterranean diet score adapted to a southern Mediterranean population and its relation to overweight and obesity risk.

OBJECTIVES: The current study aimed to develop a modified Mediterranean diet (MMD) score adjusted to the southern Mediterranean countries' cultural specificities and to evaluate associations between adherence to this modified score and overweight/obesity risk in Moroccan adults. DESIGN: Population-based cross-sectional study. SETTING: Rural and urban areas of the five greatest provinces of Morocco. PARTICIPANTS: In total, 1516 participants were recruited between September 2009 and February 2017. Dietary assessment was obtained using a validated Moroccan FFQ. We constructed a MMD score focusing on twelve components. The MMD score ranged from 0 (no adherence to the traditional southern Mediterranean diet (MD)) to 12 (maximal adherence) and was categorised as low (scores 0-4), moderate (scores 5-7) and high (scores 8-12). RESULTS: Among the whole population, 754 (50·5 %) were women and 738 (49·5 %) were men, and the mean age was about 55·60 ± 13·70. In total, 58 % of participants were moderately active. Regarding educational level, 50·7 % were illiterate. The prevalence of overweight and obesity was 43·3 and 8·6 %, respectively. In multivariate analyses, close adherence to MMD (scores 8-12) was associated with reduced overweight/obesity risk (OR 0·61, 95 % CI 0·44, 0·84). CONCLUSION: The prevalence of overweight and obesity was very high among Moroccan adults. Adherence to the traditional southern MD may help prevent overweight and obesity.

Associations between nutritional factors and KRAS mutations in colorectal cancer: a systematic review.

BACKGROUND: Between 30 and 50% of colon tumors have mutations in the Kirsten-ras (KRAS) gene, which have a large nutritional attributable risk. Despite its high frequency in colorectal cancer (CRC), data to support specific associations between KRAS mutations in CRC and diet are sparse. Here, we conducted a systematic review to summarize the current epidemiological evidence on the association between various dietary factors and KRAS mutations. METHODS: PubMed, Science Direct, and Cochrane databases were searched for relevant studies published until December 31, 2019, using inclusion and exclusion criteria in accordance with PRISMA guidelines. We analyzed the studies to find associations between nutritional factors and CRC tumors with KRAS mutations in humans. RESULTS: We identified 28 relevant studies to include in this systematic review. In-depth analyses showed unclear associations between nutritional factors and KRAS mutations in CRC. Most epidemiological studies in the same nutrient or food often reported conflicting and/or inconclusive findings, whereas for some dietary factors, the results were homogeneous. CONCLUSIONS: Further research using a more robust prospective cohort study is needed to lend more credence to the epidemiological associations found between KRAS mutations and dietary factors.

Meat and colorectal cancer in Middle Eastern and North African countries: update of literature review.

BACKGROUND: This review discusses the findings from epidemiological studies that have examined the possible role of meat and colorectal cancer (CRC) risk in Middle Eastern and North African (MENA) countries. METHODS: We conducted a literature search in the PubMed, Clinical Trials, Google Scholar, Science Direct, and Cochrane databases for observational studies that investigated the association between meat and CRC risk in adults from the MENA region. RESULTS: Eleven studies were included in this review. For red meat overall, significant associations were found. Regarding beef meat intake, the study included found controversial results with OR = 0.18 (95% CI 0.03-0.09). A positive association was observed between chicken and CRC risk, at OR = 2.52 (95% CI 1.33-4.77) to OR = 4.00 (95% CI 1.53-10.41) to OR = 15.32 (95% CI 3.28-71.45). A significant association was observed between processed meat intake and CRC risk, OR = 9.08 (95% CI 1.02-80.58). CONCLUSION: This is the first literature review which illustrated the association between meat consumption and CRC risk in MENA region. We concluded that these studies included in this review have been controversial and not sufficient to establish a clear relationship between CRC and meat consumption in the MENA region. Further studies are necessary to be carried out in this region, with a larger sample size and submit to rigorous criteria. This review will help researchers to improve the quality of future studies about the association between CRC and nutritional diet in general and meat in particular.

Behavioral, Nutritional, and Genetic Risk Factors of Colorectal Cancers in Morocco: Protocol for a Multicenter Case-Control Study.

BACKGROUND: Colorectal cancer (CRC) has been reported as the third most commonly diagnosed cancer worldwide and is currently considered as a major public health concern. A peak increase in incidence has been noted in economically transitioning countries like Morocco where industrialization started shifting from a traditional lifestyle and diet toward a more westernized diet and lifestyle. OBJECTIVE: This paper aims to present the protocol of a large-scale Moroccan case-control study that aims at investigating associations of diet, other lifestyle factors, and genetic traits with CRC risk in Morocco. METHODS: A case-control study was conducted between 2009 and 2017, including 3032 case-control pairs (1516 cases and 1516 controls) matched on sex, age, and center in 5 major public health hospitals in Morocco. Questionnaires on sociodemographic data, lifestyle, family history of CRC, and nonsteroidal anti-inflammatory drugs (NSAIDs) were completed by trained investigators during face-to-face interviews. In addition, participants completed a semiquantitative food-frequency questionnaire, developed to assess food intake in the Moroccan population. Information regarding genetic factors was recorded for cases, and paraffin blocks (with embedded tumor tissues) are available in 3 collaborating hospitals. Conditional logistic regression analysis is planned to assess associations between diet and CRC risk. Binary logistic regression is considered to predict associations between mutations and nutritional risk factors including only CRC case series. RESULTS: Altogether, 2966 cases-control pairs (1483 cases and 1483 controls) were considered eligible and included in this study. Both cases and controls did not differ significantly with respect to age (P=.36), sex (P=.51), center (P>.99), marital status (P=.30), and NSAID use (P=.08). However, participants in the control group were significantly more likely to have a high income level and live in urban areas and to have a high level of education than cases. CONCLUSIONS: This is the first study investigating potential risk factors of CRC such as lifestyle, diet, and genetic factors, originating from a southern Mediterranean country with low but increasing CRC prevalence. Identified risk factors allow the establishment of evidence-based preventive actions regarding nutrition and other lifestyle habits adapted to the Moroccan context. In brief, this study will promote cancer research and prevention in Morocco. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR1-10.2196/13998.

Consumption of meat, traditional and modern processed meat and colorectal cancer risk among the Moroccan population: A large-scale case-control study.

The current study aimed to investigate the relationship between red and white meat subtypes, processed meat (divided into traditional "Khlii, Kaddid" and industrially processed meat) and colorectal cancer (CRC) risk, considering CRC subsites, in Moroccan adults. A case-control study was conducted including 2,906 matched case-control pairs recruited from the five largest university hospitals in Morocco. Dietary data were collected through a validated Food Frequency Questionnaire (FFQ). Multivariable odds ratios (OR) and 95% confidence intervals (CI), for the association of CRC risk with meat consumption (high vs. low intake), were estimated using conditional logistic regression models, adjusted for relevant confounding variables. Overall, consumption of red meat was positively associated with colon cancer and CRC risk (OR = 1.23, 95% CI = 1.05-1.44; OR = 1.14, 95% CI = 1.02-1.27), respectively. In contrast, no significant association was observed between the consumption of red meat and rectal cancer risk (OR = 1.05, 95% = 0.90-1.23). Interestingly, while processed meat from industrial processes was positively associated with colon cancer, rectal cancer and CRC (OR = 1.61, 95% CI = 1.27-2.04; OR = 1.73, 95% CI = 1.34-2.23; OR = 1.67, 95% CI = 1.41-1.98), processed meat prepared using traditional methods was inversely associated with colon cancer and CRC risk (OR = 0.74, 95% CI = 0.57-0.98; OR = 0.77, 95% CI = 0.64-0.93), respectively. Furthermore, positive associations were observed between poultry intake and colon cancer risk among men (OR = 1.27, 95% CI = 1.01-1.59). Our study showed similar associations between the consumption of red meat and CRC risk in Morocco as in developed countries, while inverse associations were found for traditionally processed meat products. This is the first study to investigate the differential effects of traditional vs. westernized processed meat products in a developing country. Other studies are needed to confirm these findings and to understand the physiological pathways underlying these associations.

Consumption of modern and traditional Moroccan dairy products and colorectal cancer risk: a large case control study.

PURPOSE: The main objective of this study is to describe the association between the consumption of either traditional or modern dairy products or calcium intakes and the risk of colorectal cancer (CRC) in the adult Moroccan population. METHODS: A case-control study was conducted in five Moroccan hospital centers. The study was matched on sex, age (± 5 years) and center. Data were collected using validated food frequency questionnaire (FFQ) taking into account different types of Moroccan dairy products. Conditional logistic regression models were used to assess the association between dairy products consumption, calcium intakes and CRC risk subtypes. In all statistical tests, the significance level was set at 0.05. RESULTS: Among 1453 cases and 1453 matched controls, 50.7% were women and 49.3% were men. Milk ORb 0.84, 95% CI 0.74-0.96 and yogurt ORb 0.74, 95% CI 0.64-0.86 were inversely associated with CRC risk. Similar inverse associations were observed for traditional dairy products namely Lben ORb 0.77, 95% CI 0.67-0.88, Raib ORb 0.86, 95% CI 0.76-0.96 and Jben ORb 0.77, 95% CI 0.67-0.88. The dairy calcium intake was inversely associated to CRC overall ORb 0.83, 95% CI 0.74-0.93. CONCLUSIONS: Our study supports previous international evidence and suggests that individuals who have a high intake of either modern or traditional dairy products are at lower risk for CRC. These findings should be further confirmed by longitudinal data and studies investigating potential pathways involved.

Concordance with the World Cancer Research Fund/American Institute for Cancer Research recommendations for cancer prevention and colorectal cancer risk in Morocco: A large, population-based case-control study.

The present study aimed to investigate associations between adherence to the recommendations on cancer prevention from the WCRF/AICR and colorectal cancer (CRC) risk in Morocco. Incident CRC cases (n = 1,516) and controls (n = 1,516) matched on age, sex and center, were recruited between September 2009 and February 2017 at five major hospitals located in Morocco. In-person interviews were conducted to assess habitual diet using a validated Food Frequency Questionnaire, physical activity and anthropometric measurements. Adherence to the WCRF/AIRC Recommendations was ranged from 0 (no adherence) to 6 (maximal adherence) and incorporating six WCRF/AICR components (food groups, physical activity and BMI). Multivariable odd ratios (ORA ) and 95% confidence intervals (CI) were calculated using conditional multivariate logistic regression models, with low adherence as referent, adjusting for potential confounding factors. Compared to those with the lowest adherence score, individuals in the highest WCRF/AICR score category had a statistically significant reduced risk for colon cancer (ORA = 0.63, 95% CI 0.53-0.76); rectal cancer (ORA = 0.52, 95% CI 0.43-0.63) and CRC overall (ORA = 0.58, 95% CI 0.51-0.66). For individual score components, when comparing the lowest with the highest adherence category, CRC risk was significantly lower in the highest adherence category for body fatness (ORA = 0.73; 95% CI 0.62-0.85), physical activity (ORA = 0.70; 95% CI 0.60-0.82), plant foods (ORA = 0.50; 95% CI 0.39-0.63) and red/processed meat (ORA = 0.81; 95% CI 0.71-0.92). Our analysis indicated that greater adherence to the WCRF/AICR recommendations for cancer prevention may lower CRC risk in Morocco.

Adaptation and validation of a food frequency questionnaire (FFQ) to assess dietary intake in Moroccan adults.

BACKGROUND: To date, no culture-specific food frequency questionnaires (FFQ) are available in North Africa. The aim of this study was to adapt and examine the reproducibility and validity of an FFQ or use in the Moroccan population. METHODS: The European Global Asthma and Allergy Network (GA2LEN) FFQ was used to assess its applicability in Morocco. The GA2LEN FFQ is comprised of 32 food sections and 200 food items. Using scientific published literature, as well as local resources, we identified and added foods that were representative of the Moroccan diet. Translation of the FFQ into Moroccan Arabic was carried out following the World Health Organization (WHO) standard operational procedure. To test the validity and the reproducibility of the FFQ, 105 healthy adults working at Hassan II University Hospital Center of Fez were invited to answer the adapted FFQ in two occasions, 1 month apart, and to complete three 24-h dietary recall questionnaires during this period. Pearson correlation, and Bland-Altman plots were used to assess validity of nutrient intakes. The reproducibility between nutrient intakes as reported from the first and second FFQ were calculated using intra-class correlation coefficient (ICC). All nutrients were log-transformed to improve normality and were adjusted using the residual method. RESULTS: The adapted FFQ was comprised of 255 items that included traditional Moroccan foods. Eighty-seven adults (mean age 27.3 ± 5.7 years) completed all the questionnaires. For energy and nutrients, the intakes reported in the FFQ1 were higher than the mean intakes reported by the 24-h recall questionnaires. The Pearson correlation coefficients between the first FFQ and the mean of three 24-h recall questionnaires were statistically significant. For validity, de-attenuated correlations were all positive, statistically significant and ranging from 0.24 (fiber) to 0.93 (total MUFA). For reproducibility, the ICCs were statistically significant and ranged between 0.69 for fat and 0.84 for Vitamin A. CONCLUSION: This adapted FFQ is an acceptable tool to assess usual dietary intake in Moroccan adults. Given its representativeness of local food intake, it can be used as an instrument to investigate the role of diet on health and disease outcomes.