14 research outputs found
Can sesame consumption improve blood pressure? A systematic review and meta-analysis of controlled trials
© 2017 Society of Chemical Industry Hypertension is a major risk factor for cardiovascular disease, myocardial infarction, stroke and renal failure. Sesame consumption may benefit blood pressure (BP) owing to its high polyunsaturated fatty acid, fibre, phytosterol and lignan contents. To clarify this, a systematic review and meta-analysis of controlled trials was conducted. The PubMed (MEDLINE), Cumulative Index to Nursing and Allied Health Literature (CINAHL) and Cochrane Library (Central) databases were systematically searched until August 2016. Eight controlled trials with a total of 843 participants met the eligibility criteria. A random effect meta-analysis showed that sesame consumption can reduce systolic BP (−7.83 mmHg, 95% CI: −14.12, −1.54; P < 0.05, I 2 = 99%) and diastolic BP (−5.83 mmHg, 95% CI: −9.58, −2.08; P < 0.01, I 2 = 98%). To reduce the heterogeneity, the meta-analysis was limited to high methodology quality trials (n = 4), which resulted in a significant reduction in systolic BP (−3.23 mmHg, 95% CI: −5.67, −0.79; I 2 = 33%) and a non-significant reduction in diastolic BP (−2.08 mmHg, 95% CI: −4.85, 0.69; I 2 = 62%). This study concluded that sesame consumption can reduce systolic and diastolic BP. However, further investigations with larger sample sizes and better methodology quality are required to confirm the BP-lowering effect of sesame consumption. © 2017 Society of Chemical Industry
Sesame fractions and lipid profiles: A systematic review and meta-analysis of controlled trials
Increased plasma lipid profiles are among the most important risk factors of CHD and stroke. Sesame contains considerable amounts
of vitamin E, MUFA, fibre and lignans, which are thought to be associated with its plasma lipid-lowering properties. This study aimed
to systematically review the evidence and identify the effects of sesame consumption on blood lipid profiles using a meta-analysis
of controlled trials. PubMed, CINAHL and Cochrane Library databases were searched (from 1960 to May 2015). A total of ten controlled
trials were identified based on the eligibility criteria. Both the Cochrane Collaboration tool and the Rosendal scale were used to assess the
risk of bias of the included studies. The meta-analysis results showed that consumption of sesame did not significantly change
the concentrations of total blood cholesterol (−0·32 mmol/l; 95 % CI −0·75, 0·11; P=0·14, I 2=96 %), LDL-cholesterol (−0·15 mmol/l; 95 %
CI −0·50, 0·19; P =0·39, I 2=96 %) or HDL-cholesterol (0·01 mmol/l; 95 % CI −0·00, 0·02; P =0·16, I 2=0 %). However, a significant reduction
was observed in serum TAG levels (−0·24 mmol/l; 95 % CI −0·32, −0·15; P<0·001, I 2=84 %) after consumption of sesame. It was
concluded that sesame consumption can significantly reduce blood TAG levels but there is insufficient evidence to support its
hypocholesterolaemic effects. Further studies are required to determine the potential effect of sesame consumption on lipid profiles and
cardiovascular risk factors
Green tea catechins and blood pressure: A systematic review and meta-analysis of randomised controlled trials
Purpose Although previous literature has reported that
regular green tea consumption may improve blood pressure,
the evidence from these studies is not consistent. The
present study systematically reviewed randomised controlled
trials and examined the effect of green tea consumption
on blood pressure using meta-analysis.
Methods Search of ProQuest, PubMed, Scopus and
Cochrane Library (CENTERAL) was conducted, to identify
eligible articles. Articles from 1995 to 2013 were the effect of combined trials.
Result Thirteen studies were included in the meta-analysis.
Green tea consumption significantly changed systolic
blood pressure, by -2.08 mm Hg (95 % CI -3.06, -1.05),
and diastolic blood pressure, by -1.71 mm Hg (95 % CI
-2.86, -0.56), compared to the control. Changes in lipid
profile, blood glucose and body mass index were also
assessed in the meta-analysis. A significant reduction was
found in total cholesterol (-0.15 mmol/L [95 % CI -0.27,
-0.02]) and low-density lipoprotein cholesterol
(-0.16 mmol/L [95 % CI -0.22, -0.09]). Changes in
other parameters did not reach statistical significance.
Subgroup analysis suggested a greater reduction in both
systolic and diastolic blood pressure in studies that included
participants with a baseline mean systolic blood pressure
of C130 mm Hg, and studies involving consuming
green tea as an extract.
Conclusion The present meta-analysis suggests that green
tea and its catechins may improve blood pressure, and the
effect may be greater in those with systolic blood pressure
C130 mm Hg. The meta-analysis also suggests that green
tea catechins may improve total and low-density lipoprotein
cholesterol
Cheese consumption in relation to cardiovascular risk factors among Iranian adults- IHHP Study
BACKGROUND/OBJECTIVE: It is expected that dairy products such as cheeses, which are the main source of cholesterol and saturated fat, may lead to the development or increase the risk of cardiovascular and metabolic diseases; however, the results of different studies are inconsistent. This study was conducted to assess the association between cheese consumption and cardiovascular risk factors in an Iranian adult population.
SUBJECTS/METHODS: Information from the Isfahan Healthy Heart Program (IHHP) was used for this cross-sectional study with a total of 1,752 participants (782 men and 970 women). Weight, height, waist and hip circumference measurement, as well as fasting blood samples were gathered and biochemical assessments were done. To evaluate the dietary intakes of participants a validated food frequency questionnaire, consists of 49 items, was completed by expert technicians. Consumption of cheese was classified as less than 7 times per week and 7-14 times per week.
RESULTS: Higher consumption of cheese was associated with higher C-Reactive Protein (CRP), apolipoprotein A and high density lipoprotein cholesterol (HDL-C) level but not with fasting blood sugar (FBS), total cholesterol, low density lipoprotein cholesterol (LDL-C), triglyceride (TG) and apolipoprotein B. Higher consumption of cheese was positively associated with consumption of liquid and solid oil, grain, pulses, fruit, vegetable, meat and dairy, and negatively associated with Global Dietary Index. After control for other potential confounders the association between cheese intake and metabolic syndrome (OR: 0.81; 96%CI: 0.71-0.94), low HDL-C level (OR: 0.87; 96%CI: 0.79-0.96) and dyslipidemia (OR: 0.88; 96%CI: 0.79-0.98) became negatively significant.
CONCLUSION: This study found an inverse association between the frequency of cheese intake and cardiovascular risk factors; however, further prospective studies are required to confirm the present results and to illustrate its mechanisms