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Essential Insights into Cocoa’s Surprising Health Benefits


The health advantages of cocoa extend far and wide, much like its delightful applications in our daily cooking.

Research continues to uncover more reasons to enjoy a warm cup of cocoa or savor a piece of dark chocolate. Cocoa provides benefits that transcend pure enjoyment.

According to a recent study, unprocessed cocoa helps protect the vascular system from stress—even after consuming fatty foods.

Cocoa for Heart Health

Cocoa contributes positively to cardiovascular wellbeing. The flavonoid composition of cocoa is pivotal in lowering blood pressure, enhancing blood circulation, and improving blood vessel function, thereby decreasing the likelihood of heart disease.

A recent study from the University of Birmingham explored whether consuming foods rich in cocoa flavanols could counteract vascular damage incurred after consuming fatty meals during periods of stress.

Researchers observed that cocoa abundant in flavanols lessened vessel damage during mental stress when compared to cocoa with lower flavanol levels. Specifically, high-flavanol cocoa enhanced vessel function 90 minutes post-stress and mitigated the stress-induced decline in endothelial function—responsible for regulating blood flow—30 minutes after stress compared to its low-flavanol counterpart.

The study expands on previous research from the same team, which indicated that high-fat diets can exacerbate the health of our blood vessels during stressful situations compared to low-fat foods. This is noteworthy as people often turn to high-fat comfort foods like chips and baked goods during stress.

“Flavanols take up to 1 hour to circulate and reach their peak benefits 2 hours post-intake, so consuming a food or drink rich in flavanols at least 1 hour before a stressful event would be ideal,” explained Catarina Rendeiro, an assistant professor in nutritional sciences at the University of Birmingham and lead author of the paper, in an email to The Epoch Times. “However, if someone regularly consumes flavanol-rich foods (e.g., every 3 to 4 hours), they would likely experience the benefits of these compounds frequently, offering protection whenever mental stress occurs,” she added.

Fighting Disease From the Inside Out

Cocoa is a rich source of polyphenols—plant compounds that help shield them from diseases. These protective properties are transferred to us when we consume polyphenol-rich foods. Polyphenols contribute to the vibrant color of plants and foods like fruits and vegetables. The more intense and vivid the hues, the higher the polyphenol content, which is why we often hear the advice to “eat the rainbow.”

Polyphenols possess antioxidant properties, combat inflammation, and shield against free radical-induced cell damage leading to oxidative stress, a factor linked to various severe chronic diseases such as heart disease and cancer.

Nutrient-dense foods like vegetables, fruits, nuts, seeds, whole grains, berries, ginkgo biloba, black and green teas, along with cocoa, serve as excellent sources of beneficial polyphenols.

Cocoa’s flavonoids offer various health advantages, highlighted by Courtney Pelitera, a registered dietitian at Top Nutrition Coaching, in her conversation with The Epoch Times. These benefits include enhanced blood circulation, better blood pressure regulation, reduced cardiovascular disease risk, and improved insulin sensitivity, supporting individuals with diabetes.

“Moreover, cocoa includes magnesium, potassium, copper, and calcium,” she noted. “These minerals play vital roles in maintaining healthy blood flow.”

However, not all cocoa products provide the same polyphenol content. The processing of cocoa can drastically reduce its polyphenol levels, so it’s advisable to select products that are as minimally processed or as close to the raw bean as possible.

Although “cocoa” and “cacao” are often used synonymously, they refer to different forms. Cacao pertains to the raw or unprocessed beans from the Theobroma cacao tree, whereas cocoa refers to the processed version found in chocolate bars and cocoa powder.

Cognitive Benefits

The flavanols in cocoa exhibit numerous advantageous effects on cognitive function. Several studies suggest that flavanols positively influence various cognitive processes, including processing speed, attention, working memory, and executive function. Research has indicated that cocoa enhances memory and helps protect against neurodegenerative disorders like Alzheimer’s by improving blood flow to the brain and boosting levels of brain-derived neurotrophic factor, a protein crucial for neuroprotection.

In a 2020 review, scientists examined 11 studies involving 366 participants, primarily under the age of 25, to assess cocoa’s potential to sharpen cognitive skills in young individuals. The overarching findings indicated that cocoa is not merely a treat but a cognitive enhancer that can improve brain performance both in the short term and over extended periods.

Particularly, the researchers discovered that short-term cocoa consumption led to increased brain blood flow and oxygen levels, while consistent intake of cocoa’s beneficial flavanols over time resulted in improved cognitive performance and raised neurotrophin levels, which support the brain’s capability to forge new connections.

Improvements in Mood

Cocoa, especially in the form of dark chocolate, is renowned for uplifting our spirits during low moments.

In a randomized controlled trial conducted in 2022, researchers explored the effects of dark chocolate on mood and its possible associations with the gut-brain axis among healthy adults. Participants were randomly assigned to three groups: one consuming 70 percent cocoa dark chocolate, another with 85 percent cocoa dark chocolate, and a control group. Participants in the chocolate groups consumed 30 grams of dark chocolate each day.

Findings indicated that those consuming 85 percent cocoa dark chocolate experienced a notable decrease in negative emotions compared to the control group, while those eating 70 percent cocoa didn’t report similar mood enhancements, suggesting that a higher cocoa content may be more effective for mood elevation.

Additionally, gut microbiota analysis revealed increased diversity in the group eating 85 percent cocoa dark chocolate, particularly an increase in Blautia obeum, a bacterium associated with mood regulation through butyrate production, which mitigates leaky gut and has demonstrated antidepressant-like effects and the capability to “reverse depressive behaviors” in rats.

In simple terms, consuming 85 percent cocoa dark chocolate could elevate our mood by enhancing the diversity of beneficial gut bacteria.

Insulin Sensitivity

Cocoa might also boost insulin sensitivity and aid in better managing blood sugar levels.

A 2021 study involving healthy adults showed that eating cacao polyphenol-rich chocolate before a glucose challenge enhanced glucose and GLP-1 secretion. GLP-1 is a hormone that facilitates blood sugar control by stimulating insulin release and improving insulin sensitivity. The research also indicated that polyphenol-rich chocolate consumption helped reduce blood sugar levels immediately following meals.

These results point to the potential of cacao polyphenol-rich chocolate in assisting individuals with diabetes to maintain lower and more stable post-meal blood sugar levels by promoting insulin and GLP-1 release.

Things to Consider

When incorporating cocoa into your diet, several key factors warrant attention.

Firstly, processing can significantly alter cocoa’s nutritional profile.

“Processing cocoa, especially into chocolate bars, can dilute the polyphenol content by as much as 90 percent,” Pelitera remarked. “This varies considerably based on the chocolate’s quality, cocoa percentage, and manufacturing methods,” she noted. Higher cocoa percentage dark chocolate typically provides more antioxidants and polyphenols but may taste more bitter than milk chocolate, she pointed out.

For the best health results, Pelitera recommends treating cocoa as a supplement. Incorporating cocoa powder into yogurt, oatmeal, smoothies, and baking allows you to enjoy the benefits without unwanted fillers. “Add this to vanilla yogurt or a sweetened item to mitigate the bitterness,” she advised. When selecting chocolate bars, she suggests opting for dark chocolate with at least 70 percent cocoa.

Potential Drawbacks

Despite its advantages, there are potential downsides to increasing cocoa intake. Many commercial chocolate bars lack sufficient cocoa content to provide health benefits and often contain excessive sugars, fats, and other undesirable ingredients. “It’s advisable to limit added sugar intake to 50 grams daily for the average adult,” Pelitera stated. This amount, equivalent to approximately two pieces of store-bought chocolate cake with frosting, is roughly 4 tablespoons of sugar.

Cocoa also contains caffeine and theobromine, both of which are stimulants. While cocoa typically has lower caffeine levels compared to tea or coffee, those sensitive to caffeine should monitor their intake of cocoa, especially before bedtime.

Cocoa also contains oxalates, potentially leading to kidney stones in individuals who are susceptible. Hence, those prone to kidney stones should consult their healthcare provider regarding their cocoa intake.
Concerns regarding heavy metals such as lead and cadmium in cocoa products should also be taken seriously. A recent study identified heavy metals in well-known chocolate products, with even greater amounts found in those labeled organic. This results from the cacao plant’s ability to absorb heavy metals from the soil, so it may be wise to choose brands that routinely test for heavy metals and to vary the types of cocoa products consumed to prevent potential toxicity.

Final Thoughts

Most of us already have numerous reasons to appreciate cocoa, especially since it serves as the key ingredient in chocolate—a universal favorite for many. Nonetheless, moderation is crucial to maximize its health benefits while minimizing associated risks.

While research does not establish a definitive quantity of cocoa for optimal benefits, it suggests starting with 40–50 grams of cocoa powder or dark chocolate daily, according to Pelitera.

Cocoa is also remarkably versatile, becoming a healthy (and delicious) addition to many foods—from a sprinkle in your coffee to a vast array of tasty desserts. Both historical and scientific evidence supports cocoa’s role in enhancing our health while adding a touch of sweetness to life.



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