2021 International Journal of Molecular Sciences

Isoflavones found in soybeans can reduce risks of certain cancers and alleviate menopause-related symptoms among women, such as vasomotor syndromes, spinal bone loss, and hypertension.

The study overviewed soybeans' chemical composition and focused mainly on isoflavones. The research examined the processes of soybean preparation that includes cleaning, drying, crushing, and dehulling, and extraction methods to derive various soy products, particularly focusing on isoflavones - daidzein, genistein, and S-equol. Various soy products such as refined soy oil, soy lecithin, free fatty acids, glycerol, and soybean meal were discussed, along with the presence of the minor biological constituents in remaining components.

The study explored the relationship between isoflavone consumption and disease prevention, particularly in relation to heart disease, cancer incidence—of the breast, bladder, and endometrial and colorectal—and menopause-related symptoms. The therapeutic effects of isoflavones were studied in the context of vasomotor syndromes, spinal bone loss, hypertension regulation, depressive symptoms during pregnancy, and in vitro glycemic control. In contrast, it failed to find definitive effects of isoflavones on cognition improvement and urogenital symptoms. The inconsistencies in defining the ingredients, doses, study durations, and outcomes of isoflavone studies proved challenging for the research.

Utilization of Isoflavones in Soybeans for Women with Menopausal Syndrome: An Overview Chen LR, Chen KH

2020 Endocrine, Metabolic & Immune Disorders - Drug Targets

Cinnamon supplementation has favorable effects on diastolic blood pressure and long-term effects on systolic blood pressure.

Out of 927 records, 8 trials that enrolled 582 participants were included. The pooled effect size showed that systolic blood pressure did not change following cinnamon supplementation. Also cinnamon supplementation in long-duration (≥ 8weeks) had a significant effect on systolic blood pressure. Pooled analysis showed that cinnamon had a significant effect on diastolic blood pressure. In addition, results from both duration subsets and high dose (>1500 mg/day) of cinnamon supplementation were significant.

What is the Impact of Cinnamon Supplementation on Blood Pressure? A Systematic Review and Meta-Analysis Hadi A, Campbell MS, Hassani B, Pourmasoumi M, Salehi-Sahlabadi A, Hosseini SA.

2020 Clinical Nutrition ESPEN

Cinnamon supplementation can improve blood pressure by a modest degree.

Meta-analysis of 9 RCTs with 641 participants showed significant reductions in both systolic (WMD: −5.17 mmHg, 95% CI: −9.35 to −0.99, P = 0.01) and diastolic blood pressure (WMD: −3.36 mmHg, 95% CI: −5.67 to −1.04, P ≤ 0.001) after cinnamon supplementation. Subgroup analyses indicated that these results were significant only when cinnamon was administered at the dosages of ≤2 g/day, for a period longer than 8 weeks, and in participants with a baseline BMI of ≥30 kg/m2.

The effect of cinnamon supplementation on blood pressure in adults: A systematic review and meta-analysis of randomized controlled trials Hadi A, Campbell MS, Hassani B, Pourmasoumi M, Salehi-sahlabadi A, Hosseini SA

2020 Journal of King Saud University - Science

Almond consumption was found to significantly reduce systolic blood pressure.

A systematic and dose-response meta-analysis review study was carried out. The researchers thoroughly searched through PubMed/MEDLINE, Web of Science, and Scopus, with no restrictions on time or language, up until July 2019. The goal was to identify randomized controlled trials which investigated the effects of almond consumption on systolic and diastolic blood pressure. A total of fifteen studies, with 21 arms and involving 853 participants, were selected and their findings analyzed according to the PRISMA guidelines.

Upon analysis, it was observed that the consumption of almonds displayed a significant reduction effect on systolic blood pressure. However, no such significant effect was found on diastolic blood pressure. The variation in results for diastolic blood pressure was noticed to be linked to the dose of almonds consumed, a finding made through a meta-regression analysis carried out during the study.

The effect of almonds consumption on blood pressure: A systematic review and dose-response meta-analysis of randomized control trials Li Z, Bhagavathula AS, Batavia M, Clark C, Abdulazeem HM, Rahmani J, Yin F

2020 Evidence-Based Complementary and Alternative Medicine

The study shows the promising potential of Suan Zao Ren as a multi-effect traditional Chinese medicine derived from the seeds of Ziziphus Jujuba.

The methodology of the research was primarily a comprehensive literature review of Ziziphi Spinosae Semen (aka Suan Zao Ren). The team explored the botanical characteristics, traditional uses, pharmacology, and discovered compounds in the seeds of Ziziphus Jujuba.

In regards to the results of the review, more than 150 compounds were identified in Ziziphi Spinosae Semen. These compounds, which mainly include terpenoids, flavonoids and others, show various biological activities. It was found that the seeds are particularly prominent in having sedative and hypnotic effects. Other properties discovered include antitumor potential, improvement to learning and memory, anti-inflammatory, antioxidative, anti-aging, alongside lower blood pressure and lipid levels. Traditional usage of the seeds for the treatment of insomnia, forgetfulness, headaches and dizziness were confirmed by the review.

Botanical and Traditional Uses and Phytochemical, Pharmacological, Pharmacokinetic, and Toxicological Characteristics of Ziziphi Spinosae Semen: A Review Su-Rong He, Chong-Bo Zhao, Jing-Xia Zhang, Jing Wang, Bo Wu, Chun-Jie Wu,

2020 Medicine

Green tea intake can significantly reduce both systolic and diastolic blood pressure.

In this meta-analysis, studies were sourced from the PubMed, Embase, and Cochrane Library databases from their inception to August 2019. The selection criteria focused on randomized placebo-controlled trials, exploring the effects of green tea on blood pressure control. The final selection consisted of twenty-four trials involving 1697 subjects, and the results were pooled using the generic inverse-variance method with random-effects weighting. The quality of the included studies was independently ascertained using the Jadad score, while potential publication bias was evaluated using funnel plots, and the Egger and Begg tests.

The pooled results showed that green tea intake led to notable reductions in both systolic and diastolic blood pressure, though the outcomes revealed significant heterogeneity among the trials. The funnel plots and tests used to investigate the publication bias did not find any substantial evidence to suggest this was an influencing factor in the results.

Effect of green tea supplementation on blood pressure Xu R, Yang K, Ding J, Chen G

2019 Nutrients

Consuming walnuts daily can reduce cardiovascular risk factors in chronic kidney disease patients without altering significant physiological levels.

In this prospective, randomized, crossover, pilot clinical trial, 13 patients suffering from chronic kidney disease were selected as subjects. They were randomly divided into two groups, one of which was assigned a diet including 30 grams of walnuts each day while the other followed a control diet. After a duration of 30 days, a washout period of an additional 30 days was allowed, following which the groups were switched to the alternate diet. Key markers such as urinary and serum levels of phosphorous and potassium, multiple vascular risk factors, and urinary inositol phosphates were measured before initiating the trial and post the intervention period.

The study indicated that a dietary supplement of walnuts resulted in reduced blood pressure, lower LDL cholesterol, and decreased albumin excretion. Interestingly, despite these changes, it had no impact on the physiological levels of phosphorous, potassium, parathyroid hormone, and fibroblast growth factor 23. This indicates that daily consumption of walnuts, when incorporated in a sodium, protein, phosphate, and potassium controlled diet, has the potential to be an effective strategy in reducing cardiovascular risk among chronic kidney disease patients without perturbing key physiological levels.

A Pilot Randomized Crossover Trial Assessing the Safety and Short-Term Effects of Walnut Consumption by Patients with Chronic Kidney Disease Sanchis P, Molina M, Berga F, Muñoz E, Fortuny R, Costa-Bauzá A, Grases F, Buades JM

2019 Critical Reviews in Food Science and Nutrition

Cinnamon supplementation leads to a significant reduction in both systolic and diastolic blood pressure in adults.

This systematic review and meta-analysis included studies up to July 2019, sourced from databases like PubMed/Medline, Scopus, ISI Web of Science, Embase, and Google Scholar. The research focused on randomized clinical trials that primarily explored the effect of oral cinnamon supplementation on blood pressure parameters, including systolic or diastolic blood pressure.

From the 469 citations, nine trials involving 641 subjects were included. The results inferred that cinnamon supplementation leads to a noticeable decrease in both systolic and diastolic blood pressure. A more remarkable effect on systolic blood pressure was observed in trials using less or equal to 2g cinnamon, lasting for 12 weeks or more, and included participants under the age of 50. Diastolic blood pressure was also reduced using lower doses of cinnamon. No significant non-linear associations were detected between cinnamon supplementation dosage, study duration, and both systolic and diastolic blood pressure.

Anti-hypertensive effects of cinnamon supplementation in adults: A systematic review and dose-response Meta-analysis of randomized controlled trials Seyed Mohammad Mousavi, Ahmad Jayedi, Yahya Jalilpiran, Maryam Hajishafiee, Azadeh Aminianfar, Ahmad Esmaillzadeh.

2019 Journal of Sleep Research

Acupuncture therapy does not impact the severity of Obstructive Sleep Apnea, blood pressure, or quality of life in hypertensive patients.

The study examined the effects of acupuncture on blood pressure and Obstructive Sleep Apnea severity in hypertensive patients. These patients, all suffering from mild to moderate Obstructive Sleep Apnea, were randomly divided into two groups, one of which received acupuncture treatment while the other received sham-acupuncture treatment, essentially a placebo. Each patient's condition was assessed before and after ten acupuncture sessions, relying on measures such as polysomnography, around-the-clock blood pressure monitoring, and a life quality survey.

A total of 44 patients completed the study, the group covering both genders, with an average age of 57 years, and a diverse range of body mass indices and apnea-hypopnea indices. It's important to note that there were no distinguishable differences observed in the apnea-hypopnea index, daytime or nighttime blood pressure, or life quality between the group that received genuine acupuncture treatment and the group that received the placebo treatment.

Effects of acupuncture on obstructive sleep apnea severity, blood pressure control and quality of life in patients with hypertension: A randomized controlled trial Silva MVFP, Lustosa TC, Arai VJ, Couto Patriota TLG, Lira MPF, Lins‐Filho OL, Chalegre ST, B.B.A.S. K, Secundo IV, Pedrosa RP

2015 PLOS One

There is evidence of efficacy of acupuncture as an adjunctive therapy to western medicine for treating hypertension.

Our review provided evidence of acupuncture as an adjunctive therapy to medication for treating hypertension, while the evidence for acupuncture alone lowing BP is insufficient. The safety of acupuncture is uncertain due to the inadequate reporting of it. However, the current evidence might not be sufficiently robust against methodological flaws and significant heterogeneity of the included RCTs. Larger high-quality trials are required.

Is Acupuncture Effective for Hypertension? A Systematic Review and Meta-Analysis Zhao XF, Hu HT, Li JS, Shang HC, Zheng HZ, Niu JF, et al