Posted by Dr Michelle Wright
Welcome to Health Matters. I’m Dr Michelle Wright, with your weekly look at all things medical.
We’ve just come out of Easter. Whether it came in the form of a bunny, an egg, or something a bit fancier, many of us have indulged in a little extra chocolate. So, I thought it would be a good moment to think about what role – if any – chocolate can play in supporting your health.
What is chocolate made of?
It’s made from cocoa beans, the seeds of the cacao tree. After being fermented, dried, roasted, and ground, the beans are turned into cocoa mass. This contains both cocoa solids and cocoa butter – the key ingredients in chocolate. Depending on the type, sugar, milk, and other flavourings are added to create dark, milk, or white chocolate.
What are flavanols and why are they good for you?
Now, while most of us think of chocolate as a treat, it’s also rich in a group of plant nutrients called flavanols. This is particularly in darker and less processed varieties. Flavanols are antioxidants, meaning they help neutralise oxidative stress in the body.
Studies have shown us that cocoa flavanols help promote the production of nitric oxide. Nitric oxide relaxes blood vessels and improves circulation – ultimately lowering blood pressure and improving heart function.
But it doesn’t stop at the heart. The same mechanisms that help your heart may also benefit your brain. Improved blood flow can support brain areas involved in memory, learning, and decision-making. One study showed that older adults who consumed a high-flavanol diet derived from cocoa experienced increased activity in the hippocampus – a region critical to memory – and performed better on cognitive testing.
So, if you’re trying to stay sharp as you age, a bit of high-quality dark chocolate might help support that.
What other health benefits are packed into chocolate, especially cocoa?
Beyond flavanols, cocoa is also a source of nutrients. Unsweetened cocoa powder contains dietary fibre, important minerals like magnesium, iron, and copper, and even a decent amount of protein – about 18 to 20 grams per 100 grams. Of course, I’m not endorsing that you eat it by the spoonful, but in moderation and in the right form, chocolate could complement a balanced diet.
There’s also emerging evidence that cocoa can act as a prebiotic, helping support beneficial gut bacteria. I’m sure many people have heard talk of the gut microbiome – the community of microorganisms that live in your digestive tract, mostly in the large intestine, and play an essential role in many aspects of health. Having a diverse microbiome helps to protect against chronic diseases, including obesity, diabetes, and inflammatory conditions.
One trial found improved microbial diversity in people who consumed dark chocolate with 85% cocoa content daily.
Is all chocolate good for you?
But before you run to finish off your Easter stash – there’s a caveat. Most commercially available chocolate is heavily processed and high in sugar, milk fats, and additives which can counteract these benefits if consumed in excess.
The health benefits I’m talking about come mostly from dark chocolate with at least 75% cocoa content, and especially from minimally processed cocoa powder. Milk chocolate and white chocolate? Not quite the same story.
Dr Michelle’s advice on chocolate?
If you’re choosing chocolate for its potential health benefits, go dark, go small, and go slow.
A small square or two (25-40 grams) of high-quality dark chocolate a few times a week is enough to enjoy some of the benefits I’ve mentioned – without overloading on sugar or calories.
Post-Easter or not, chocolate isn’t just a guilty pleasure. In its purer forms, it can actually support heart and brain health, your gut microbiome, provide useful nutrients, and even lift your mood – it’s all about mindful indulgence.
