Natural compound in chocolate can slow down ageing — New study

Researchers at King’s College London report that theobromine, a naturally occurring chemical that gives dark chocolate its bitter flavour, may boast anti-ageing properties.

Anti-inflammatory and rich in antioxidants, theobromine is an alkaloid, a plant-derived compound that interacts with gene regulation and can shape long-term health outcomes.

Published in the journal Ageing, the researchers linked higher levels of theobromine in the blood to signs of slower biological ageing in humans, suggesting that this can help keep cells and organs young.

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Previous research has suggested that theobromine can protect the brain from Alzheimer’s disease. Scientists also claim the compound may counteract high cholesterol’s damage to memory and cognitive function.

The researchers had examined data from two large population studies in Europe. Among the 509 women in the TwinsUK cohort, higher concentrations of theobromine were linked to slower biological ageing.

The same association was observed in a separate group of 1,160 men and women from the German KORA study, confirming the consistency of the findings across different populations.

Professor Jordana Bell, senior author and professor in epigenomics at King’s College London, said, “Our study finds links between a key component of dark chocolate and staying younger for longer. While we’re not saying that people should eat more dark chocolate, this research can help us understand how everyday foods may hold clues to healthier, longer lives.”

Importantly, theobromine’s effects were independent of related compounds such as caffeine, and even after adjusting for these other substances and different lifestyle factors, the association with slower ageing remained strong.

The study also associated higher theobromine levels with longer telomeres, another marker of healthy ageing.

While theobromine is commonly found in cocoa and chocolate, the study does not suggest increasing chocolate intake. However, it points to the potential of everyday dietary components such as theobromine to influence ageing.

The team, going further, said they intend to examine whether theobromine’s effect occurs on its own or if it works alongside other well-known components of dark chocolate, such as polyphenols, which are recognized for their positive effects on health.

By identifying a connection between theobromine and slower biological ageing, the study opens new directions for research into nutritional strategies for healthy ageing, further supporting growing evidence that certain plant-based compounds may play a role in promoting long-term health.