scholarly journals Nuts consumption and cognitive function

2021 ◽  
Author(s):  
Zainab Abdulmoayed Abdulwahab ◽  
Sara Qaddourah ◽  
Hajer Nafea ◽  
Omnia Abdelmegid

Background: Cognitive impairments has become a global public concern. A limited number of studies suggest a positive association between nuts intake and cognitive function. Objectives: The aim of this study is to investigate the association between nuts consumption and cognitive function and to test whether hypertension and diabetes mediate this association among adults in Qatar. Methods: Data from 1000 participants aged 20 and above who attended Qatar Biobank (QBB) were used. Nuts consumption was assessed by a Food Frequency Questionnaire (FFQ). Blood samples were measured for magnesium and glucose. Cognitive function was assessed using computer self-administrated test to measure Mean Reaction Time (MRT). Linear regression was used to assess the association. Results: A total of 21.1% of the sample reported consuming nuts more than 4-6 times/week (high consumption) while 40.2% reported the consumption ≤1 time/month (low consumption). The mean MRT was 715.6 millisecond (SD 204.1). An inverse association was found between nuts consumption and MRT. Compared with those with a low consumption, high consumption of nuts had a regression coefficient of -36.95 (-68.09 to -5.82) after adjusting for sociodemographic and lifestyle factors. The inverse association between nuts and MRT was mainly seen among those aged >50 years. There was an interaction between nuts consumption and hypertension. The association between nuts consumption and MRT was not mediated via hypertension, diabetes, and serum magnesium. Conclusion: There is a positive association between nuts consumption and cognitive function, especially among old adults.

Nutrients ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 3580
Author(s):  
Hajer Nafea ◽  
Omnia Abdelmegid ◽  
Sara Qaddourah ◽  
Zainab Abdulwahab ◽  
Joyce Moawad ◽  
...  

The association between nuts intake and cognitive function is inconclusive. We aimed to investigate the association between habitual nuts consumption and cognition among Qatari adults. Data from 1000 participants aged >20 years who attended Qatar Biobank (QBB) were used. Nuts consumption was assessed by a food frequency questionnaire (FFQ). Blood samples were measured for magnesium, lipids and glucose. Mean reaction time (MRT) was used as an indicator of cognitive function. Linear regression was used to assess the association. A total of 21.1% of the participants reported consuming nuts ≥4–6 times/week (high consumption) while 40.2% reported consuming ≤1 time/month (low consumption). The mean MRT was 715.6 milliseconds (SD 204.1). An inverse association was found between nuts consumption and MRT. Compared to those with a low consumption, high consumption of nuts had a regression coefficient of −36.9 (95% CI −68.1 to −5.8) after adjusting for sociodemographic and lifestyle factors. The inverse association between nuts and MRT was mainly seen among those >50 years. There was an interaction between nuts consumption and hypertension. The association between nuts consumption and MRT was not mediated by hypertension, diabetes, or serum magnesium. Habitual higher consumption of nuts is positively associated with cognitive function, especially among old adults.


Author(s):  
Kateba Al Ghazali ◽  
Sana El Tayeb ◽  
Ayesha Musleh ◽  
Tamara Al-Abdi ◽  
Zumin Shi

Background: Previous studies found that low levels of magnesium can increase the risk of several diseases including cardiovascular diseases, diabetes, and hypertension which are associated with cognitive dysfunction. Objective: Examine the association between serum magnesium and cognitive function among Qatari adults. In addition to assessing the interaction relation between low serum magnesium, hypertension, and diabetes in relation to cognitive function. Methods: Data from 1000 Qatari participants aged ≥20 years attending the Qatar Biobank Study were analyzed. Serum magnesium was measured by an automated calorimetric method and suboptimal magnesium was characterized by <0.85 mmol/L. Cognitive function was measured by a computer-based selfadministered test focusing on mean reaction time (MRT). Multivariable linear regression and logistic regression were used. Results: The prevalence of suboptimal magnesium was 57.1%. Across the quartiles of serum magnesium from high to low, the regression coefficients (95% CI) for MRT were 0, -17.79, -18.27, and -31.93 (95%CI 2.38–3.05), respectively (p for trend <0.033). The presence of hypertension and diabetes significantly increased the MRT along with a wide range of low serum magnesium. Women with diabetes or hypertension were affected the greatest by low magnesium levels. Conclusion: There was a positive association between serum magnesium and cognitive function. Low magnesium levels were associated with a longer MRT.


2021 ◽  
pp. 1-10
Author(s):  
Alaa Heggy ◽  
Aisha Masoumi ◽  
Maryam Al-Yafei ◽  
Fatima Al-Bader ◽  
Tamara Al-Abdi ◽  
...  

Background: Tea and coffee consumption is associated with cognitive function in some studies. Objective: We aimed to identify tea and coffee drinking patterns and their association with mean reaction time among Qatari adults. Method: The study included 1,000 adults aged 20 years and above attending the Qatar Biobank Study (QBB). Habitual tea and coffee consumption during the previous year was assessed by questionnaire. Tea and coffee drinking patterns were identified using factor analysis. In a computer-based self-administered touch screens test, mean reaction time (MRT) was used as an indicator of cognitive function. Results: The mean age of the participants was 35.8 (SD 10.3) years. Herbal tea and regular coffee consumption was inversely associated with MRT. In the multivariable model, compared with non-consumers, the regression coefficients for MRT were –34.3 (–65.4, –3.3) and –37.9 (–71.0, –4.7) for daily consumers of herbal tea and regular coffee, respectively. Of the two tea and coffee drinking patterns identified, pattern 1 (high consumption of tea, Arabic coffee, and herbal tea) was not associated with MRT but pattern 2 (high loadings of instant coffee, regular coffee, and Karak) was inversely associated with MRT in the unadjusted model. There was a significant interaction between pattern 2 and low-density lipoprotein (LDL) in relation to MRT. Pattern 2 was inversely associated with MRT among those with a low LDL. Conclusion: There was an inverse association between regular coffee and herbal tea consumption with mean reaction time. There was an interaction between Western coffee pattern and LDL.


Nutrients ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 407
Author(s):  
Reetta Holma ◽  
Reijo Laatikainen ◽  
Helena Orell ◽  
Heikki Joensuu ◽  
Katri Peuhkuri ◽  
...  

Chemotherapy-induced mucosal injury of the small intestine may interfere with the enzymes and transporters responsible for the hydrolysis and absorption of dietary carbohydrates causing diarrhoea, abdominal discomfort and pain. The aim of this study was to investigate the association between the consumption of foods rich in FODMAPs (fermentable oligo-, di- and monosaccharides and polyols) and gastrointestinal symptoms in patients receiving adjuvant therapy for colorectal cancer. The patients (n = 52) filled in a 4-day food diary at baseline and during therapy and kept a symptom diary. The intakes of FODMAP-rich foods were calculated as portions and the intakes were divided into two consumption categories. Patients with high consumption of FODMAP-rich foods had diarrhoea more frequently than those with low consumption (for lactose-rich foods the odds ratio (OR) was 2.63, P = 0.03; and for other FODMAP-rich foods 1.82, P = 0.20). Patients with high consumption of both lactose-rich and other FODMAP-rich foods had an over 4-fold risk of developing diarrhoea as compared to those with low consumption of both (OR, 4.18; P = 0.02). These results were confirmed in multivariate models. Conclusion: Consumption of lactose-rich foods results in an increased risk of diarrhoea during adjuvant therapy for colorectal cancer, especially when the consumption of other FODMAP-rich foods is also high.


Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 995
Author(s):  
Israa M. Shatwan ◽  
Eiman A. Alhinai ◽  
Balqees Alawadhi ◽  
Shelini Surendran ◽  
Najlaa M. Aljefree ◽  
...  

The Mediterranean diet (MedDiet) is considered as a good example of a healthy dietary pattern that has protective effects on obesity. The aim of the present study was to assess the adherence of adults from three Gulf countries (Saudi Arabia, Oman, and Kuwait) to the MedDiet and its association with obesity risk. A cross-sectional study was conducted on 961 men and women (75.7%) aged 20–55 years old. Waist circumference (WC), and hip circumference (HC) were measured waist/hip ratio (WHR) and body mass index (BMI) were calculated. A validated 14-item Questionnaire was used to measure adherence to MedDiet. The mean of the adherence to MedDiet score was 5.9 ± 2.03 for the total sample. An inverse association was observed between the adherence to MedDiet and BMI after adjusting for potential confounders (p = 0.0003 in total participants, and p = 0.001 in women only). A protective effect was seen with a higher adherence to the MedDiet on HC, suggesting that a greater adherence to the MedDiet was associated with a decreased HC (p = 0.04 in total participants, and p = 0.01 in women only). In conclusion, low adherence to the MedDiet among participants from three gulf countries was associated with increased obesity indicators, BMI, and HC.


Medicina ◽  
2021 ◽  
Vol 57 (4) ◽  
pp. 361
Author(s):  
Fatma Özpamuk-Karadeniz ◽  
Yusuf Karadeniz ◽  
Adnan Kaya ◽  
Servet Altay ◽  
Günay Can ◽  
...  

Background and objectives: Mortality may increase in hypouricemia as well as inhyperuricemia. We assessed the predictive value of low serum uric acid (SUA) levels on the risk of overall mortality or a composite endpoint of death and nonfatal events. Materials and Methods: In 1013 community-based middle-aged adults, free of uncontrolled diabetes and coronary heart disease at baseline, the association of sex-specific SUA tertiles with defined outcomes was evaluated prospectively by logistic regression, stratified to gender and presence of type-2 diabetes, using recent criteria. Results: Totally, 43 deaths and additional incident nonfatal events in 157 cases were recorded at a median 3.4 years’ follow-up. Multivariable linear regression disclosed SUA to be significantly associated among non-diabetic individuals positively with creatinine, triglycerides, and body mass index in women further with fasted glucose. In multivariable-adjusted logistic regression analysis, sex-specifically dichotomized baseline uric acid (<5.1 and <4.1 mg/dL vs. higher values) significantly predicted the non-fatal events in the whole sample (relative risk (RR) 1.51 [95% confidence interval (CI) 1.02; 2.26]), as well as in men, while composite endpoint in the whole sample tended to rise (RR 1.38). Compared with the intermediate one, the top and bottom SUA tertiles combined tended to confer mortality risk (RR 2.40 [95% CI 0.89; 6.51]). Adverse outcomes in diabetic women were predicted by tertiles 2 and 3. Conclusions: Inverse association of SUA with adverse outcomes, especially in men, is consistent with the involvement of uric acid mass in autoimmune activation. The positive association of uric acid with adverse outcomes in diabetic women is likely mediated by concomitant high-density lipoprotein dysfunction.


2020 ◽  
pp. 088506662098250
Author(s):  
Chad M. Conner ◽  
William H. Perucki ◽  
Andre Gabriel ◽  
David M. O’Sullivan ◽  
Antonio B. Fernandez

Introduction: There is a paucity of data evaluating the impact of heart rate (HR) during Targeted Temperature Management (TTM) and neurologic outcomes. Current resuscitation guidelines do not specify a HR goal during TTM. We sought to determine the relationship between HR and neurologic outcomes in a single-center registry dataset. Methods: We retrospectively studied 432 consecutive patients who completed TTM (33°C) after cardiac arrest from 2008 to 2017. We evaluated the relationship between neurologic outcomes and HR during TTM. Pittsburgh Cerebral Performance Categories (CPC) at discharge were used to determine neurological recovery. Statistical analysis included chi square, Student’s t-test and Mann-Whitney U. A logistic regression model was created to evaluate the strength of contribution of selected variables on the outcome of interest. Results: Approximately 94,000 HR data points from 432 patients were retrospectively analyzed; the mean HR was 82.17 bpm over the duration of TTM. Favorable neurological outcomes were seen in 160 (37%) patients. The mean HR in the patients with a favorable outcome was lower than the mean HR of those with an unfavorable outcome (79.98 bpm vs 85.67 bpm p < 0.001). Patients with an average HR of 60-91 bpm were 2.4 times more likely to have a favorable neurological outcome compared to than HR’s < 60 or > 91 (odds ratio [OR] = 2.36, 95% confidence interval [CI] 1.61-3.46, p < 0.001). Specifically, mean HR’s in the 73-82 bpm range had the greatest rate of favorable outcomes (OR 3.56, 95% CI 1.95-6.50), p < 0.001. Administration of epinephrine, a history of diabetes mellitus and hypertension all were associated with worse neurological outcomes independent of HR. Conclusion: During TTM, mean HRs between 60-91 showed a positive association with favorable outcomes. It is unclear whether a specific HR should be targeted during TTM or if heart rates between 60-91 bpm might be a sign of less neurological damage.


Author(s):  
Ayesha Ferdosi Kabir ◽  
Chris Fook Sheng Ng ◽  
Shinya Yasumoto ◽  
Taiichi Hayashi ◽  
Chiho Watanabe

The acute effect of temperature on asthma morbidity in Bangladesh is not well understood. As climate varies extensively in different parts of the world, the relation between temperature and asthma might also differ. We investigated the association between temperature and asthma-related hospital visits in the tropical city of Dhaka. We analyzed information from a total of 5989 asthma patients who received ambulatory care in the form of nebulized medication at the National Asthma Center in Mohakhali, Dhaka from February to November 2013. A time-stratified case-crossover study was conducted to estimate the effect of daily temperature, with consideration of delayed effects and possible confounders such as relative humidity and political strikes. An inverse association was observed between temperature and the number of hospital visits. The effect was delayed for approximately a week. A degree centigrade decrease in mean temperature (averaged across lags 0-6) was associated with an increase of approximately 4.5% (95% CI 1.5, 7.5) in all asthma visits. The association was evident in adult males but marginal in elderly males. A positive association (lag 0) was observed among adult females, whereas no association was observed among children. Strikes significantly modified the effect among the elderly. Findings suggest temperature declines affect asthma outcomes in a warm climate, and this effect can be delayed and vary by sex and age group.


Circulation ◽  
2017 ◽  
Vol 135 (suppl_1) ◽  
Author(s):  
Akira Fujiyoshi ◽  
Takayoshi Ohkubo ◽  
Katsuyuki Miura ◽  
Akihiko Shiino ◽  
Naoko Miyagawa ◽  
...  

Introduction: The relationship between chronic kidney disease (CKD) and cognitive function remains to be determined. Existing studies focused primarily on estimated glomerular filtration rate (eGFR) but not proteinuria in relation to cognitive function. Hypothesis: In a community-based sample, lower eGFR and presence of proteinuria are cross-sectionally independently associated with lower cognition. Methods: The Shiga Epidemiological Study of Subclinical Atherosclerosis (SESSA) randomly recruited and examined participants from Shiga, Japan in 2006-08 at baseline. Among 824 male participants in the follow-up exam (2010-12), we restricted our analyses to those who underwent the Cognitive Abilities Screening Instrument (CASI), age ≥65 years-old, free of stroke, with no missing pertinent covariates. We calculated eGFR (creatinine-based) according to the 2012-guideline by the Japanese Society of Nephrology. We then divided the participants into three groups by eGFR of ≥60, 59-40, and <40 (mL/min/1.73m 2 ), and separately divided into three groups according to proteinuria using urine dipstick: (-), (-/+), and ≥(1+). We defined CKD as either eGFR <60 or proteinuria ≥ (-/+). In linear regression with CASI score being a dependent variable, we computed the score adjusted for age, highest education attained, smoking, drinking, body mass index, hypertension, diabetes, and dyslipidemia. Results: We analyzed 541 men. The mean [standard deviation] of age and unadjusted score were 72.6 [4.3] years and 89.7 [6.0]. Prevalence of CKD was 56%. The score was significantly lower in participants with CKD than those without it (P=0.03). eGFR and proteinuria categories were separately and jointly associated with lower CASI score in a graded fashion (Ps for trend <0.05 in all the models tested. Table 1 ). Conclusions: Lower eGFR and higher degree of proteinuria were independently associated with lower cognitive function in the community-based men. CKD even in its early phase may predispose to lower cognitive function.


Neurology ◽  
2021 ◽  
pp. 10.1212/WNL.0000000000012025
Author(s):  
Shahram Oveisgharan ◽  
Ana W. Capuano ◽  
Sukriti Nag ◽  
Sonal Agrawal ◽  
Lisa L. Barnes ◽  
...  

Objective.We tested the hypothesis that an inverse association exists between diabetes mellitus (DM) and hemoglobin A1C (A1C) with Transactive response DNA binding protein 43 (TDP-43) levels in older adults.Methods.We leveraged antemortem and postmortem data of decedents from three community-based clinical-pathological studies. DM status, A1C levels, and medications for DM were documented annually. TDP-43 cytoplasmic inclusions, evaluated in 6 brain regions using immunohistochemistry, were used to obtain a semiquantitative TDP-43 score (0-5) in each region, and scores were averaged across regions to obtain a TDP-43 severity score. We used linear regressions to test the association of DM and A1C with the TDP-43 severity score.Results.On average, participants (n=817) were 90 years old at the time of death, three fourth were women, and one fourth had DM. The mean A1C was 6.0% (SD=0.6). TDP-43 was observed in 54% of participants, and the mean TDP-43 score was 0.7 (range 0-4.5). A higher level of A1C was associated with a lower TDP-43 score (estimate=-0.156, S.E.=0.060, p=0.009) while DM had a borderline inverse association with the TDP-43 score (estimate=-0.163, S.E.=0.087, p=0.060). The association of higher levels of A1C with lower TDP-43 scores persisted after further adjustment by Apolipoprotein ε4, vascular risk factors, stroke, and hypoglycemic medications. Exclusion of the oldest old participants did not change the results.Conclusion.Overall, the results suggest that a high level of A1C is associated with less TDP-43 proteinopathy in older persons while the relationship of DM with TDP-43 needs further study.


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