“Eating chocolate every day reduces the risk of heart disease.”

Cumulative evidence suggests that higher chocolate intake is associated with a lower risk of future cardiovascular events though residual confounding cannot be excluded. There does not appear to be any evidence to say that chocolate should be avoided in those who are concerned about cardiovascular risk. A total of 9 studies with 157,809 participants were included in the meta-analysis. Higher compared to lower chocolate consumption was associated with significantly lower CHD risk (5 studies; pooled RR 0.71 (0.56-0.92)), stroke (5 studies; pooled RR 0.79 (0.70-0.87)), composite cardiovascular adverse outcome (2 studies; pooled RR 0.75 (0.54-1.05)) and cardiovascular mortality (3 studies; pooled RR 0.55 (0.36-0.83)).

In past studies, researchers have observed a negative correlation between supplementing with dark chocolate and the risk of cardiovascular disease. Dark chocolate is primarily derived from cocoa, which is rich in flavanols, including monomeric compounds such as catechins and epicatechins. 85% dark chocolate supplementation may reduce the negative vascular effects of high-intensity resistance exercise, particularly by lowering blood pressure, arterial stiffness, and API, especially in the early follicular phase. These findings suggest that dark chocolate could be a practical, non-pharmacological intervention for improving cardiovascular health in women.

Cocoa extract supplementation did not significantly reduce total cardiovascular events among older adults but reduced CVD death by 27%. Per-protocol analyses censoring follow-up at nonadherence supported a lower risk of total cardiovascular events (HR: 0.85; 95% CI: 0.72, 0.99).

A systematic search was conducted on electronic databases such as MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials (CENTRAL) using a search strategy and keywords. Among the many health effects assessed on several outcomes (including skin, cardiovascular, anthropometric, cognitive, and quality of life), we found that compared to controls, chocolate or cocoa product consumption significantly improved lipid profiles (triglycerides), while the effects of chocolate on all other outcome parameters were not significantly different.

Eating up to 100g of chocolate every day is linked to lowered heart disease and stroke risk. Compared with those who ate no chocolate, higher intake was linked to an 11% lower risk of cardiovascular disease and a 25% lower risk of associated death. The highest chocolate intake was associated with a 23% lower risk of stroke.

We found that dark chocolate intake was significantly associated with the reduction of the risk of essential hypertension (EH) (OR = 0.73; 95% CI 0.60–0.88; p = 1.06 × 10−3), as well as with the suggestive association to the reduced risk of venous thromboembolism (OR = 0.69; 95% CI 0.50–0.96; p = 2.81 × 10−2). However, no association was found between dark chocolate intake and the other ten CVDs.

Adults consuming the highest amount of chocolate (3 or more servings per week) had 13% lower risk of heart attack than those that consumed no chocolate. Combined with five past studies, researchers found that consuming at least 3 servings of chocolate a week was associated with a 10% lower risk of heart attack and heart disease compared with no chocolate consumption.

Our meta-analysis showed that light-to-moderate, but not high, consumption of chocolate was associated with a reduced risk of HF. In dose–response meta-analysis, we found a J-shaped relationship between chocolate consumption and risk of HF. Initially, compared to no chocolate consumption, a moderate consumption is associated with a risk reduction in HF incidence of 16%. A higher than moderate intake is not associated with a decreased risk. This result may be attributable to the high calorie content of commercially available chocolate.

People who eat more chocolate have lower rates of heart attacks, heart failure, and death from heart disease. A recent study conducted by research teams at Harvard and in Denmark indicates that chocolate also protects against atrial fibrillation.

Earlier this year, the FDA announced that it does not intend to object to the use of certain qualified health claims regarding the relationship between the consumption of cocoa flavanols in high flavanol cocoa powder and a reduced risk of cardiovascular disease. The authorized qualified health claim for cocoa flavanols states: "Consuming 200 mg or more of cocoa flavanols per day as part of a diet low in saturated fat and cholesterol may reduce the risk of cardiovascular disease."

“Most chocolate has been processed with sugar and cocoa butter to make it taste good,” said Dr. Greenlee. Eating too many processed foods can lead to conditions like heart disease, diabetes, obesity, and cancer. Experts encourage eating dark chocolate with 70% or greater cocoa content, because it includes more cocoa flavanols, less sugar, and less fat than milk chocolate varieties do.

Five studies reported a beneficial link between higher levels of chocolate consumption and the risk of cardiovascular events. The highest levels of chocolate consumption were associated with a 37% reduction in cardiovascular disease and a 29% reduction in stroke compared with lowest levels. However, commercially available chocolate is very calorific (around 500 calories per 100 grams) and eating too much could lead to weight gain, risk of diabetes and heart disease.

New findings from the University of Birmingham suggest that regularly eating foods rich in flavanols, including tea, berries, apples, and cocoa, may help protect men's blood vessels from the negative effects that occur during long periods of sitting. Earlier research has shown that even a small 1% drop in vascular function, measured through brachial Flow-mediated dilatation (FMD), corresponds to a 13% rise in the risk of cardiovascular conditions such as heart disease, strokes, and heart attacks.

A 2019 review of observational studies showed a link between having chocolate and the reduced risk of heart and circulatory diseases. It suggested 45g chocolate per week was linked the biggest reduction in risk. Eating more chocolate than this was potentially linked to bad health effects from eating too much sugar.

The research, published in the European Journal of Preventive Cardiology, analyzed data from 145 randomized controlled trials. It found that regular consumption of flavan-3-ols—naturally occurring compounds in tea, apples, cocoa, and dark chocolate—can lead to meaningful reductions in blood pressure, particularly in individuals with elevated or high readings. Professor Christian Heiss, the study's lead author from the University of Surrey, told Newsweek: "While dark chocolate can be a source of flavan-3-ols which are compounds shown to support blood vessel function and reduce blood pressure it is important to consume it mindfully and as part of and not instead of a healthy balanced diet.

A new study has found that chocolate, eaten in moderation, may reduce the risk of heart failure. However, before you break out the giant sharing block, be warned, it also found that eating a lot of chocolate, was associated with an increased risk of heart failure. It is also important to note that chocolate is high in calories and eating too much can result in being overweight or obese, a risk factor for heart disease and stroke.

Dr Tim Chico, Reader in Cardiovascular Medicine and Consultant Cardiologist at the University of Sheffield, said: “This study adds to the evidence that people who consume chocolate tend to have lower rates of cardiovascular disease, although such studies cannot say whether the chocolate is the cause of this protective effect. “However, it is also clear that chocolate has the potential to increase weight, which is unequivocally bad for cardiovascular health.

Daily chocolate consumption may significantly lower risk for heart disease and stroke, according to a study recently published in the British medical journal Heart. After following participants for more than 11 years, researchers found that adults with the highest chocolate consumption (up to 99 g/day) had 23% lower risk of stroke and 14% lower risk of heart disease than those that didn't eat chocolate.

The evidence does not support chocolate as a heart-healthy food in and of itself. What it does support are cocoa flavanols—naturally occurring bioactive compounds found in cocoa beans—which have measurable effects on vascular health. Processing methods commonly used in commercial chocolate production—particularly alkalization, also known as Dutch processing—dramatically reduce flavanol content.

The most recent meta-analysis, which included 23 prospective studies with 405,304 participants, indicates that chocolate consumption is associated with a reduced risk of cardiovascular disease (CVD), if consumption is limited to less than 100 g/week. However, the dose-response analysis shows that at more than 100 g/week there is no longer any protective effect and that the risk of CVD increases at higher doses, which could be attributable to the harmful effect of consuming too much sugar.

Eating dark chocolate with high cocoa content in moderation can deliver antioxidants and minerals and may help protect you from heart disease. A 2017 review revealed that eating chocolate 3 times per week lowered the risk of cardiovascular disease by 9%. Consuming more than 100 g per week doesn't appear to produce health benefits.

Cocoa contains plant chemicals called flavanols, which may help protect the heart. Flavanols help support the production of nitric oxide, a compound that relaxes the blood vessels and improves blood flow. This may also lead to lower blood pressure, which can lower your risk of heart disease.

The study found that dark chocolate alone didn't significantly improve cardiac risk factors. However, when combined with a diet rich in almonds, dark chocolate showed improved cardiovascular outcomes.

The cardiovascular benefits of chocolate are primarily attributed to flavonoids, particularly epicatechin, which improve endothelial function, reduce inflammation, and lower blood pressure. However, most commercial chocolate contains added sugars and saturated fats that can offset these benefits if consumed in excess.