Dark chocolate is loaded with nutrients that can positively affect your health.

Made from the seed of the cacao tree, it is one of the best sources of antioxidants on the planet.

Studies show that dark chocolate (not the sugary crap) can improve your health and lower the risk of heart disease.

This article reviews 8 health benefits of dark chocolate or cocoa that are supported by science.

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1.Dark Chocolate May Help Prevent Heart Disease and Lower the Risk of Stroke

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One of the biggest benefits that researchers tout is the role dark chocolate may play in improving heart health. A meta-analysis of eight studies on the link between chocolate consumption and cardiovascular disease, published in July 2015 in the journal Heart, found that people who ate more chocolate per day had a lower risk of both heart disease and stroke.

A number of observational studies have also shown indulging in dark chocolate on a regular basis may reduce the risk of heart disease. For example, one earlier study published in the journal Clinical Nutrition found that people who ate dark chocolate more than five times a week reduced their risk of heart disease by 57 percent.

Researchers hypothesize it’s the flavonoids in dark chocolate that maintain heart health, per a study published in The American Journal of Clinical Nutrition. These chemicals help produce nitric oxide, which causes blood vessels to relax and blood pressure to lower, noted a review published in March 2017 in the American Journal of Physiology: Cell Physiology.

Because many of these studies are observational, the results could be skewed by people underreporting their chocolate intake. The studies are also limited in that they can’t directly establish cause and effect. More study is needed to determine the exact amount and types of flavonoid-rich chocolate that would help lessen stroke risk.

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2.The Treat May Improve Cognition, Prevent Memory Loss, and Boost Your Mood

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No, it’s not your imagination — studies show consuming high concentrations of dark chocolate may benefit your brain. Joy DuBost, PhD, RD, a nutrition spokesperson and owner of Dubost Food & Nutrition Solutions, says research has shown chocolate stimulates neural activity in areas of the brain associated with pleasure and reward, which in turn decreases stress and improves your mood.

Out of eight studies on chocolate and mood, five showed improvements in mood, and three showed “clear evidence of cognitive enhancement,” according to a systematic review published in the journal Nutrition Reviews. Further research presented at the 2018 Experimental Biology meeting found that eating 48 grams (g) of organic chocolate with 70 percent cacao increased neuroplasticity in the brain, which could have positive effects on memory, cognition, and mood.

Improvements in brain health may be due to the high levels of flavonoids in dark chocolate, which research, like a study published in April 2018 in The FASEB Journal, has found to have accumulated in regions of the brain responsible for learning and memory.

While some research, including a study published in May 2017 in the journal Frontiers in Nutrition, has indicated there may be a link between dark chocolate and the brain, studies with larger sample sizes need to be conducted, and further research is needed to investigate the mechanisms involved. And before you run out and stock up on chocolate bars, keep in mind most studies experimented with much higher quantities of chocolate than the recommended daily dose (1.5 ounces maximum).

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3.Dark Chocolate Could Improve Blood Sugar Levels, and Reduce the Risk of Developing Diabetes

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Eating chocolate every day doesn’t sound like the best way to prevent diabetes, but studies have shown healthy amounts of dark chocolate rich in cacao could actually improve how the body metabolizes glucoseInsulin resistance causes high blood glucose (sugar) and is the hallmark of type 2 diabetes, per an article published in March 2019 by StatPearls.

In a study published in October 2017 the Journal of Community and Hospital Internal Medicine Perspectives, the flavonoids in dark chocolate were found to reduce oxidative stress, which scientists think is the primary cause of insulin resistance. By improving your body’s sensitivity to insulin, resistance is reduced, and in turn the risk of diseases like diabetes decreases.

Another study, this one published in January 2017 in the journal Appetite, showed that participants who rarely consumed chocolate had almost twice the risk of developing diabetes five years down the road, compared with participants who indulged in dark chocolate at least once per week.

While researchers agree dark chocolate possesses many health benefits, further study is needed to determine if there is a cause-and-effect relationship between chocolate consumption and diabetes risk.

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4.Chocolate Is Good for Your Gut and May Help With Weight Loss

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Eating chocolate every day probably seems like the last way to lose weight, but research suggests dark chocolate may play a role in controlling appetite, which in turn could help with weight loss. Neuroscientist Will Clower, PhD, wrote a whole book on the subject called Eat Chocolate, Lose Weight, which describes how eating a bit of dark chocolate before or after meals triggers hormones that signal to the brain you’re full. Of course, eating more than the recommended amount per day can counteract any potential weight loss.

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5.It Fights Free Radicals and May Play a Role in Cancer Prevention

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Evidence that dark chocolate possesses properties that could help protect people from certain types of cancer is limited but growing. Antioxidants protect our cells from damage caused by free radicals, which are unstable oxygen molecules thought to be responsible for aging and disease, per an article published in January 2015 in the Indian Journal of Clinical Biochemistry.

“When you have too many free radicals in your body, they start to attack your cells, and that can lead, over time, to low-grade inflammation and to some diseases — cancer, heart disease, and Alzheimer’s,” Dr. DuBost says.

Some studies, such as one published in the Journal of the American Society of Hypertension, have shown that people who eat many flavonoids or antioxidant-rich chocolate develop fewer cancers than those who don’t consume them. Of the many flavonoids in chocolate, two in particular, epicatechin and quercetin, are believed to be responsible for the cancer-fighting properties.

Still, most studies are limited in using only animals or cell cultures, and the amount of chocolate needed to potentially yield preventative action against cancers is much higher than the daily recommended dose for humans, noted a review published in The Netherlands Journal of Medicine.

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6.It’s Good for Your Skin (in More Ways Than One)

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The Harvard T.H. Chan School of Public Health lists vitamins and minerals dark chocolate is packed full of — like copper, iron, and magnesium, to name a few — that are also beneficial to your skin. Manganese, for example, supports the production of collagen, a protein that helps keep skin looking young and healthy. Other minerals, like calcium, help repair and renew skin, which is pretty important because, according to the American Academy of Dermatology, our bodies can shed up to 40,000 skin cells each day! Several earlier studies have also found the high levels of antioxidants in dark chocolate may protect skin from the powerful ultraviolet (UV) rays emitted by the sun.

Other research, like a study published in June 2014 in Nutrition Journal, failed to show any significant protective effects of antioxidant-rich chocolate against UV rays, but did show improvements in the elasticity of skin exposed to the sun, although the exact mechanism of this isn’t known.7

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7.Dark Chocolate May Send Good Cholesterol up, Bad Cholesterol Down

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Dark chocolate is also touted as a cholesterol-lowering food. A handful of almonds, dark chocolate, and unsweetened cocoa showed a significant drop in low-density lipoproteins (LDL), also known as “bad” cholesterol, which in high amounts can clog arteries, in a study published in November 2017 in the Journal of the American Heart Association.

DuBost says the cocoa butter in dark chocolate may also play a part in raising high-density lipoproteins (HDL), or “good” cholesterol. Cocoa butter contains oleic acid, which is a monounsaturated fat — the same fat you find in heart-healthy olive oil, notes the U.S. Library of Medicine. However, unlike olive oil, cocoa butter is also high in saturated fat (per the U.S. Department of Agriculture), which in excess can be harmful to the heart, further emphasizing the need for portion control.

Not to mention, many of the studies on chocolate and good cholesterol are short term, so it’s premature to say that chocolate is a cholesterol cure-all, DuBost adds.

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8.Dark Chocolate Is Nutritious — and Delicious!

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On top of all the other potential benefits, one thing is for sure: Dark chocolate contains a ton of nutrients. Of course, the darker the chocolate the better, but any 70 percent dark chocolate or higher contains antioxidants, fiberpotassium, calcium, copper, and magnesium, according to a study published in the journal Antioxidants & Redox Signaling

It also contains a good chunk of calories and fat, so be mindful of your daily intake. Each brand of chocolate is also processed differently; Amidor says going organic is always best because it’s grown without the use of chemical fertilizers and pesticides (look for Rainforest Alliance Certified products), and recommends always checking the ingredient list to make sure you’re consuming chocolate with fewer and more natural ingredients.

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