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Cocoa extract supplementation in older adults reduced cardiovascular disease related death rates, but did not significantly lessen total cardiovascular events.
2022 The American Journal of Clinical Nutrition Effect of cocoa flavanol supplementation for the prevention of cardiovascular disease events: the COcoa Supplement and Multivitamin Outcomes Study (COSMOS) randomized clinical trial Sesso HD, Manson JAE, Aragaki AK, Rist PM, Johnson LG, Friedenberg G, et al.
Randomised Controlled Trial Cardiovascular Disease Cocoa
A randomized, double-blind, placebo-controlled trial was conducted on 21,442 US adults aged 60 or over, all of who were free of major cardiovascular disease and recently diagnosed cancer. The participants were assigned to either a cocoa extract supplement, which included 500 mg flavanols per day, or a placebo. The intervention phase ran from June 2015 to December 2020. The primary outcome was focused on the number of total cardiovascular events, including myocardial infarction, stroke, and cardiovascular death among others.
The results showed that during a median follow-up of 3.6 years, there were 410 participants taking cocoa extract and 456 under placebo who had confirmed total cardiovascular events. Secondary endpoints showed reduced death due to cardiovascular disease for the cocoa extract supplement users. However, there was no significant impact on the incidence of total cardiovascular events. Conversely, a lower risk of total cardiovascular events was supported when analyses were censored at nonadherence. Overall, no safety concerns were raised during the trial.
The consumption of cocoa or dark chocolate can reduce low-density lipoprotein cholesterol and fasting blood sugar levels in diabetic patients.
2021 Phytotherapy Research The effect of cocoa/dark chocolate consumption on lipid profile, glycemia, and blood pressure in diabetic patients: A meta‐analysis of observational studies Darand M, Hajizadeh Oghaz M, Hadi A, Atefi M, Amani R
Systematic Review Blood Sugar Cocoa Dark Chocolate
A systematic search of databases identified eight randomized controlled trials (RCTs) with 433 participants for meta-analysis. The results demonstrated a substantial reduction in LDL-c levels (WMD: −15.49 mg/dl) and FBS concentrations (WMD: −6.88 mg/dl) following cocoa/dark chocolate consumption. The study emphasizes the potential positive effects of cocoa/dark chocolate on the metabolic profile of diabetic individuals.
The meta-analysis included RCTs focusing on cocoa/dark chocolate interventions in diabetic patients, with a significant pooled analysis showing reduced LDL-c and FBS levels. The findings suggest that incorporating cocoa/dark chocolate in the diet of diabetic individuals could be beneficial for managing lipid profile and glycemia. Further research is necessary to solidify these insights and understand the complete impact on metabolic health.
Chocolate and cocoa product consumption significantly improved lipid profiles, but had no significant effect on other heath aspects such as cognitive function and blood pressure.
2021 Nutrients The Health Effects of Chocolate and Cocoa: A Systematic Review Tan TYC, Lim XY, Yeo JHH, Lee SWH, Lai NM
Systematic Review Chocolate Cocoa Triglyceride
A systematic search was performed on academic databases such as MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials. The researchers utilized a precise search strategy and keywords to gather the most relevant studies and evidence. The studies focused on a variety of health effects related to the consumption of chocolate and cocoa products, like their effects on skin, cardiovascular health, anthropometry, cognitive function, blood glucose levels, and overall quality of life.
The research revealed considerable improvements in lipid profiles (particularly in triglycerides) among those who consumed chocolate or cocoa products, compared to controls. However, there were no significant differences observed in other outcome parameters related to skin health, blood pressure, cognitive function, anthropometry, blood glucose levels, and quality of life between the chocolate/cocoa consumption group and the control group. The subjects generally accepted chocolate well, with gastrointestinal disturbances and unpalatability reported as their main concerns.
Cocoa flavanols exhibit health and aging benefits and may act as powerful agents in preventing chronic diseases such as cardiovascular and metabolic disorders, and cancer.
2021 Food and Chemical Toxicology Impact of cocoa flavanols on human health Martin M, Ramos S
Systematic Review Anti-Ageing Cardiovascular Disease Cocoa
This research primarily relies on a comprehensive review of numerous human studies conducted over the past two decades. These studies provided significant data related to the health effects of cocoa intake and its impact on various chronic diseases. The studies encompassed different demographics and health conditions.
Though most studies indicate beneficial effects of cocoa on health and prevention of chronic diseases, the results exhibit some inconsistency. Different studies suggest various mechanisms of action for cocoa, but these potential pathways are still not completely understood. Also, crucial issues like recommending cocoa consumption to healthy subjects or patients, determining the appropriate dosage, or the period of intake remain unresolved. Despite these unclarities, the potential of cocoa use to decrease the risk for certain chronic diseases and improve general health and quality of life is emphasized.
Cocoa bean husk, a by-product of cocoa processing, exhibits potent antioxidant and anticancer effects on prostate cancer cells due to its high phenolic compound content.
2021 Molecular & Cellular Toxicology Antioxidant and apoptotic activity of cocoa bean husk extract on prostate cancer cells Choi J, Yang C, Lim W, Song G, Choi H
Experimental Study Cocoa Prostate Cancer
The methodology of the study involved fractionating ethanol crude extract of cocoa bean husk (CBH) and comparing the total polyphenol and flavonoid content, as well as radical scavenging activities, of the various fractions. The phenolic compounds present in the ethanol ethyl acetate (EAF) and butanol (BF) fractions were further analysed using High-Performance Liquid Chromatography (HPLC). These fractions were then applied to prostate cancer cell lines PC3 and DU145 to ascertain their impact.
The results indicated that the ethyl acetate fraction exhibited the highest phytochemical content and antioxidant activity, closely followed by the butanol fraction. The presence of abundant phenolic compounds, namely catechin, epicatechin, and procyanidin B, was observed in both fractions. Moreover, both fractions induced apoptosis and DNA fragmentation in the prostate cancer cells in a concentration-dependant manner, demonstrating their potential anticancer effects.
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