Here's How Dark Chocolate Actually Impacts Your Heart, According to Cardiologists
If you have a sweet tooth, making changes to your diet to better your health can be challenging. Having fruit for dessert just doesn't seem that appealing when you're used to having a small bowl of ice cream or a couple of cookies in the evening.
But there's one sweet food that can seem like a loophole for eating healthy while cutting back on sugary treats: dark chocolate. Registered dietitians and other health experts often talk about the benefits of dark chocolate and say that it's a healthier alternative to milk chocolate.
Related: Here's Exactly What Happens to Your Cholesterol When You Eat Blueberries
Unlike milk chocolate, eating dark chocolate regularly positively impacts the body in different ways, including reducing the risk of type 2 diabetes, stroke and heart disease, lowering inflammation and supporting brain health. That's in addition to the pure joy that enjoying a chocolatey treat can bring.
If you're trying to lower your cholesterol, you may be wondering how having dark chocolate for dessert each night impacts your goal. Will it truly bring your numbers down or is it too good to be true? To find out, Parade talked to cardiologists about how eating dark chocolate regularly impacts cholesterol.
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Is Dark Chocolate Good for Your Heart?
According to the cardiologists we talked to, eating dark chocolate in moderation truly is good for heart health-it's not too good to be true! Dr. Minhal Makshood, MD, a preventive cardiologist at MedStar Montgomery Medical Center, says that one reason why dark chocolate is heart-healthy is because it contains a compound called flavanols, which are plant-based antioxidants found in cocoa.
"Flavanols appear to help reduce oxidative stress and inflammation, both of which contribute to atherosclerosis [the buildup of fatty plaques]. They may also reduce oxidation of LDL cholesterol particles, which is important because oxidized LDL is thought to play a key role in plaque formation within the arteries," Dr. Makshood says.
Dark chocolate also contains magnesium and potassium, two nutrients that support heart health, she adds. On top of that, integrative cardiologist Dr. Joel Kahn, MD, says that dark chocolate supports the production of nitric oxide, which relaxes blood vessels and improves blood flow. This means it can help lower blood pressure and can also lower the risk of heart disease. "Dark chocolate also increases insulin sensitivity, which may eventually reduce the risk of diabetes and heart disease," he adds.
Even though dark chocolate does contain nutrients and compounds that support heart health, Dr. Makshood explains that its impact is moderate, not dramatic. But both cardiologists say that it is a healthier choice than most other sweet treats, including milk chocolate. "Treats rich in added sugar, butter or coconut oil likely raise the risk of heart disease and substituting dark chocolate as the choice is a positive move," Dr. Kahn says.
How Does Eating Dark Chocolate Impact Cholesterol?
Dr. Makshood says that the flavanols in dark chocolate primarily benefit blood pressure and not cholesterol specifically. "Some studies have shown mild reductions in LDL cholesterol with flavanol-rich cocoa products, but the effect is generally modest," she explains.
That said, Dr. Makshood says that if someone who eats milk chocolate every day starts eating dark chocolate instead, this can positively impact cholesterol because dark chocolate is lower in saturated fat and sugar, two ingredients that are linked to raising LDL cholesterol.
"Reducing saturated fat intake remains one of the most evidence-based dietary strategies for lowering LDL cholesterol," Dr. Makshood says. As for sugar, she explains that excess added sugar can contribute to insulin resistance, elevated triglycerides, weight gain and overall cardiometabolic dysfunction.
If you eat milk chocolate every day and switch to eating dark chocolate instead, Dr. Kahn says you will likely notice a difference in your cholesterol in about four weeks. Dr. Makshood agrees, but emphasizes that what other changes are being made to diet and lifestyle matters greatly.
"The impact from chocolate alone would likely be relatively small. The greater benefit comes from the broader dietary shift and replacement of more processed, sugar-heavy desserts," she says.
How Much Dark Chocolate Is Too Much?
While dark chocolate can be beneficial when eaten in moderation, Dr. Kahn warns against eating too much. "Dark chocolate is a high-calorie food, containing about 150 to 170 calories per ounce," he says. "The benefits outweigh the risks when a high cacao chocolate bar is chosen, but the goal is not to eat a whole bar every day. A small square after dinner to please the palate would be a reasonable compromise."
Dr. Makshood adds to this, saying that eating a heart-healthy diet isn't about giving up the foods you love completely, but about enjoying them in moderation. That's exactly where eating dark chocolate can play a role. It's a way to have a sweet treat while supporting your heart, but it should still be enjoyed in moderation.
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Sources
- Dr. Minhal Makshood, MD, preventive cardiologist at MedStar Montgomery Medical Center.
- Al-Khayri, J. M., Ravikumar Sahana, G., Nagella, P., et al. (2022). Flavonoids as Potential Anti-Inflammatory Molecules: A Review.Molecules. 27(9):2901.
- Dr. Joel Kahn, MD, integrative cardiologist and founder of the Kahn Center for Cardiac Longevity.
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This story was originally published June 8, 2026 at 7:50 AM.