In a 2025 interview, Mills emphasized, “It’s a medicine, end of story.” He advocated for the potential health benefits of consuming 50 to 100 grams of dark chocolate, specifically those with at least 75% cocoa content. Mills highlighted studies indicating that such chocolate could enhance cardiovascular and brain health by improving blood vessel function. But is there more to this claim?

The British Heart Foundation notes that cocoa is abundant in flavanols, plant-based compounds that encourage blood vessels to relax and enhance circulation.

A review featured in the journal Heart by the BMJ found that eating chocolate in moderation could be linked to a lower risk of cardiometabolic issues, particularly strokes.

The European Food Safety Authority supports this by stating that a daily intake of 200mg of cocoa flavanols helps maintain normal blood vessel elasticity, promoting healthy blood flow.

According to the Cleveland Clinic, dark chocolate also contains stimulants like theobromine and minor amounts of caffeine, which may contribute to its mood-boosting effects.

However, the NHS cautions that dark chocolate should be consumed as part of a balanced diet because of its high calorie and saturated fat content, emphasizing that moderation is essential.

Mills warned: “We have to be clear here, we’re not talking about hot chocolate that comes from a packet or something necessarily.

“We would like it to be as dark as possible. 75% cocoa solids, you know, so it’s dark chocolate, and it tastes a bit more medicinal, doesn’t it? It’s not as sweet. But I’m saying to many of my patients, take 50 grammes a day, it’s a medicine.”

The World Health Organisation reports cardiovascular disease is the leading cause of death globally, responsible for an estimated 20.5 million deaths each year.

The British Dietetic Association says protecting heart health should focus on an overall balanced diet rich in fruit, vegetables, wholegrains and healthy fats, alongside regular physical activity.