Dark chocolate earns its place in an evidence-based diet, not as a treat to justify but as a dense source of minerals and polyphenols. Cocoa flavanols — the compounds studied for blood pressure and endothelial function — are most concentrated in chocolates with 70% cocoa or more. That is why dark chocolate, rather than milk or white chocolate, appears in cardiovascular research, and why it is most often discussed in the context of heart health and brain health.
Compounds & anti-nutrients in Dark Chocolate (70–85%)
Per 100 g, Dark Chocolate (70–85%) is a notable dietary source of these active compounds. Tap any to see its full sources map and how to work with it.
Why dark chocolate is good for you
Cocoa is rich in iron, magnesium, copper and flavanols — especially epicatechin. Randomised trials have shown that flavanol-rich cocoa can improve flow-mediated dilation, a measure of blood vessel health, and can lower systolic blood pressure modestly. The effect size is smaller than medication but meaningful as part of an overall dietary pattern. The catch is dose: most benefits appear at flavanol intakes that require 30–60 g of high-cocoa chocolate a day, not an occasional square after dinner.
Dark chocolate nutrition at a glance
The label shows the numbers, but the practical takeaway is that dark chocolate is calorie-dense and fat-dense — roughly 600 kcal and 43 g fat per 100 g. The health case rests on the polyphenols and minerals, not on eating large volumes. A 20–30 g portion is the sensible benchmark for daily intake.
How to choose and use dark chocolate
Choose chocolate labelled 70% cocoa or higher; the higher the percentage, the lower the sugar and the higher the flavanol concentration. Look for terms like “non-alkalised” or “natural” if you want to preserve the most polyphenols — alkalising, or Dutch-processing, destroys many flavanols but produces a milder flavour. Use it grated over Greek yoghurt, melted into oatmeal, or in small squares as an afternoon pick-me-up.
Common questions
Is dark chocolate really good for you? Yes, in modest portions. The evidence is real for vascular function and blood pressure, but the effect is modest and only holds at meaningful flavanol intakes — which means choosing high-cocoa chocolate and keeping portions small.
Does milk chocolate have the same benefits? Milk chocolate contains far less cocoa solids and far more sugar, so its flavanol content is usually too low to replicate the same benefits. If you enjoy chocolate, switching to dark is the highest-leverage change.
Explore by health goal
Dark Chocolate (70–85%) is one of many foods that support these goals:
