This Daily Treat Might Actually Slow Ageing

A daily dose of dark chocolate might feel like a guilty pleasure—but in moderation, it could be doing your body some serious favours.

Of course, overindulging or opting for sugary milk or white chocolate versions can do more harm than good. But sticking to a modest 25g serve of dark chocolate (with at least 70% cocoa) can offer a delicious boost to your health and longevity.

Here are the age-defying benefits experts are linking to dark chocolate—yes, really.

1. May soften crow’s feet

Cocoa flavonoids—the plant-based compounds found in dark chocolate—have been linked to improved skin elasticity and hydration. A study found that regular consumption of high-flavonoid cocoa was associated with better skin texture, particularly around the temples where fine lines often appear first.

These antioxidants may also help protect your skin from UV damage, one of the biggest contributors to premature ageing.

2. Could give your memory a lift

In a small study involving older adults, drinking two cups of flavonol-rich hot chocolate daily improved blood flow to the brain by 8.3%, helping participants perform better on memory speed tests. Researchers suggest that increased circulation supports the areas of the brain responsible for cognitive function—something that naturally declines with age.

While it’s no substitute for brain training or regular movement, a daily cocoa hit might give your mind a gentle boost.

3. Might lower your diabetes risk

Moderation is key—but the right kind of chocolate may support metabolic health. A study found that adults who ate 25g of dark chocolate up to six times a week had a 34% lower risk of developing type 2 diabetes compared to those who indulged only once or twice a month. For comparison, the group that chose milk chocolate saw only a 13% reduction.

Experts believe it’s due to cocoa’s ability to enhance insulin sensitivity and reduce inflammation—two key factors in blood sugar regulation.

4. Helps keep blood vessels supple

As we age, our arteries naturally begin to stiffen, increasing the risk of high blood pressure, stroke and heart disease. Multiple studies show that cocoa flavonoids help reduce this effect by relaxing the blood vessels, improving circulation and preventing white blood cells from sticking to artery walls—a contributor to atherosclerosis.

In other words: dark chocolate might just be a treat for your ticker, too.

5. Fuels good gut bugs

It’s not just what you eat—it’s what your gut microbes do with it. Research shows that the good bacteria in your gut (like Lactobacillus and Bifidobacterium) feed on dark chocolate and ferment it into anti-inflammatory compounds. These byproducts may help reduce inflammation in the body and support immune function—both critical for healthy ageing.

Pairing chocolate with prebiotic-rich foods like bananas, oats or yoghurt may enhance the effect.

The takeaway

A little dark chocolate—about 25g a day—isn’t just a satisfying treat. It may also support better skin, sharper thinking, healthier blood vessels and a happier gut. Just be sure to choose varieties that are low in added sugar and contain at least 70% cocoa.

Still not a fan of dark chocolate? You can find cocoa flavonoids in natural cacao powder too—just mix it into smoothies, oats or a warm milk drink for a less bitter hit. Look for certified sustainable chocolate options, which support ethical sourcing and protect the long-term health of cocoa-growing communities.