Why is dark chocolate the healthiest?

medicalnewstoday.com - Dark chocolate: Health benefits, nutrition, and how much to eat

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Dark chocolate is rich in minerals, such as iron, magnesium, and zinc. The cocoa in dark chocolate also contains antioxidants called flavonoids, which may provide several health benefits. Chocolate comes from cacao, a plant with high levels of minerals and antioxidants. Commercial milk chocolate contains cocoa butter, sugar, milk, and small quantities of cacao. In contrast, dark chocolate has much larger amounts of cacao and less sugar than milk chocolate. In this article, we explore some of the potential health benefits of dark chocolate. We also cover nutritional information, risks and considerations, and how much to eat. Share on Pinterest Westend61/Getty Images Nutritional information According to the United States Department of Agriculture , a 101-gram (g) bar of dark chocolate with 70–85% cocoa solids provides: 604 calories

7.87 g of protein

43.06 g of fat

46.36 g of carbohydrates

11.00 g of dietary fiber

24.23 g of sugar

12.02 milligrams (mg) of iron

230.00 mg of magnesium

3.34 mg of zinc

Dark chocolate health benefits The percentage of cocoa listed on the chocolate refers to the percentage of all ingredients that the cacao plant makes up. That means a dark chocolate product with a higher percentage of cocoa may have a larger amount of the nutrients that deliver its benefits. These beneficial compounds can include: flavanols

polyphenols

theobromine It is important to note that cocoa loses some of its polyphenol compounds as it is processed into cocoa butter, cocoa powder, and chocolate through the manufacturing processes. Processing cocoa not only reduces some of its most beneficial compounds but may also add sugar, milk, and cocoa butter, a processed form of the cocoa bean. Cocoa has been associated with health benefits that may include : reducing free radicals

improving blood flow

lowering blood pressure

lowering “bad cholesterol”

reducing inflammation

reducing insulin resistance

improving the brain’s ability to make new connections between neurons

increasing microbiome diversity

Antioxidants Dark chocolate contains several compounds that possess antioxidant properties, such as flavanols and polyphenols. Antioxidants neutralize free radicals and prevent oxidative stress. Oxidative stress refers to the damage that excessive amounts of free radicals can inflict on cells and tissues in the body. Oxidative stress contributes to the natural aging process. Over time, the effects of oxidative stress may also contribute to the development of a variety of diseases, such as : heart disease

diabetes

Parkinson’s disease

Alzheimer’s disease

cancer

eye disease

Heart disease risk Regularly eating dark chocolate may help reduce a person’s likelihood of developing heart disease. Some of the compounds in dark chocolate, specifically flavanols, affect two major risk factors for heart disease: high blood pressure and high cholesterol. We discuss the potential benefits of dark chocolate for these two risk factors and others below: Blood pressure The flavanols in dark chocolate stimulate nitric oxide production in the body. Nitric oxide causes blood vessels to dilate, or widen, which improves blood flow and lowers blood pressure. A small 2015 study investigated the effects of chocolate consumption in 60 people with type 2 diabetes and high blood pressure. The researchers found that participants who ate 25 g of dark chocolate daily for 8 weeks had significantly lower blood pressure than those who ate the same quantity of white chocolate. The findings of a 2017 review showed that the beneficial effects of dark chocolate on blood pressure might be more significant in older people and those with a higher risk of cardiovascular disease, as opposed to younger, healthy individuals. Cholesterol Dark chocolate also contains certain compounds, such as polyphenols and theobromine, that may lower levels of low-density lipoprotein (LDL) cholesterol in the body and increase levels of high-density lipoprotein (HDL) cholesterol. Doctors often refer to LDL cholesterol as “bad cholesterol” and HDL cholesterol as “good cholesterol.” HDL cholesterol helps reduce the total amount of cholesterol in the blood while LDL cholesterol can narrow blood vessels. According to a 2017 randomized, controlled study published in the Journal of the American Heart Association, adding almonds, dark chocolate, and cocoa to the typical American diet without exceeding caloric needs may reduce the risk of coronary heart disease. In combination, almonds and dark chocolate decreased the more damaging small, dense LDL particles in participants. Anti-inflammatory effects Inflammation is part of the body’s natural immune response to germs and other harmful substances. However, chronic inflammation can damage cells and tissues and may increase the risk of some health conditions, including type 2 diabetes, arthritis, and certain types of cancer. Dark chocolate contains compounds with anti-inflammatory properties that may help reduce inflammation in the body. A 2017 review of literature published in Frontiers in Immunology suggests that eating chocolate may influence the gut microbiome and encourage anti-inflammatory activity. In a small study from 2018 , researchers found that eating 30 g of 84% dark chocolate each day for 8 weeks significantly reduced inflammatory biomarkers in people with type 2 diabetes. The authors of the study concluded that there is a need for additional studies to evaluate the optimal amounts of dark chocolate to use to treat those with diabetes.

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Insulin resistance Insulin resistance occurs when the body’s cells stop responding to the hormone insulin. Insulin resistance can cause abnormally high levels of blood glucose, which can lead to prediabetes and type 2 diabetes. A 6-month study from 2018 examined the relationship between regular dark chocolate consumption and blood glucose levels among Hispanic individuals. The research findings suggest that eating 48 g of 70% dark chocolate each day may help lower fasting glucose levels and reduce insulin resistance. Brain function Eating dark chocolate may improve brain function and help prevent neurodegenerative conditions, such as Alzheimer’s disease and Parkinson’s disease. The findings of a small 2018 study suggest that the flavanols present in dark chocolate may enhance neuroplasticity, which is the brain’s ability to reorganize itself, particularly in response to injury and disease. A study from 2016 identified a positive association between regular chocolate consumption and cognitive performance. However, the researchers collected data from surveys and had to rely on self-reported chocolate intake, so they were unable to draw any definitive conclusions from the findings. Microbiome diversity Eating dark chocolate may benefit the gut microbiome, which can aid digestion. A 2022 South Korean study published in The Journal of Nutritional Biochemistry found that eating dark chocolate was associated with increases in the diversity of the gut microbiome. The results of their research also suggested that eating 85% dark chocolate may have a positive correlation with mood. The researchers attributed this benefit to the increased diversity of the microbiome, which can affect mood through the gut-brain axis. Risks and considerations The health benefits of dark chocolate come primarily from the flavanols present in the cacao solids. However, flavanol content varies among dark chocolate products. Processing methods also differ between manufacturers, and this can affect the flavanol content of the chocolate. There is no legal requirement for chocolate manufacturers to report the flavanol content in their products. However, dark chocolate products with a higher percentage of cacao solids should generally contain more flavanols. Although dark chocolate contains beneficial antioxidants and minerals, it is usually also high in sugar and fat, which makes it a very calorie-dense food. Dark chocolate contains fat in the form of cocoa butter, which mainly consists of unhealthful saturated fats. People should, therefore, try to limit their consumption of dark chocolate to avoid consuming too many calories, fats, and sugars. In general, dark chocolate contains less sugar than milk chocolate and white chocolate. Dark chocolate with higher percentages of cacao solids typically contains even less sugar. Sugar content varies among chocolate manufacturers, so it is advisable to check the nutrition label. How much to eat? Chocolate manufacturers do not have to report the flavanol content of their products. As a result, it is difficult to know how much dark chocolate a person would need to eat to maximize its health benefits. The studies in this article generally used 20–30 g of dark chocolate per day. Dark chocolate with higher percentages of cacao solids typically contains less sugar but more fat. More cacao also means more flavanols, so it is best to choose dark chocolate that includes at least 70 percent cacao solids or more.

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medicalnewstoday.com - Dark chocolate: Health benefits, nutrition, and how much to eat

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