A Brief History of Chocolate – And Some of its Surprising Health Benefits

By Liam Corr, University of Huddersfield

Chocolate in all its forms is something that I, along with many others like to indulge in on an almost daily basis. But chocolate as it’s enjoyed today is quite different from when it first arrived in Europe from South America around the 16th century.

To the indigenous Aztec people, cocoa was consumed as a drink and held great cultural and medicinal significance. It was almost viewed as a panacea that could cure various ailments, including fever, diarrhoea, fatigue, angina and tooth decay.

The Aztec belief that cocoa was a divine elixir was probably due to the notion that it was a gift from Quetzalcoatl, the Aztec god of wind and wisdom. Perhaps this is why Swedish botanist Carl Linnaeus named the plant Theobroma cacao, from the ancient Greek words “theos” meaning god and “broma” meaning food – “food of the gods”.

It’s more likely though that the reason for any potential benefits is due to the high concentration of polyphenols found in natural cocoa – known as cocoa flavanols. Polyphenols are antioxidant compounds in fruit and vegetables that protect the body from free radicals, which in excess have been linked to various diseases. So while cocoa may not be the cure-all it was once believed to be, research shows it’s more than just a guilty pleasure.

A rich past

The person thought to be responsible for beginning the integration of cocoa into Europe was Hernan Cortes, a Spanish conquistador (soldier and explorer) following his return from the “New World”.

In 1518, Cortes and his men arrived in what is now Mexico and headed towards the Aztec capital of Tenochtitlan. During their time in Mexico, the Spaniards tasted a bitter drink known as “chikolatl”. The drink contained roasted cocoa beans that were crushed, then boiled in water with spices and chilli.

Aztec woman making chocolate

An Aztec woman generates pouring chocolate from one vessel to another. Wikimedia Commons

The first exposure to the drink was not a favourable experience for the Spaniards – deeming it too bitter and almost unpalatable. But having seen Montezuma II, king of the Aztecs, consume the drink around 50 times a day, Cortes was interested in the potential of cocoa and sought to bring it back to Spain following his conquest.

Once in Europe cocoa beans were crushed and mixed with honey and sugar, becoming a popular drink among the elite. Eventually, in the 19th century, the first chocolate bar was made by Joseph Fry and Sons, creating what we know as chocolate today.

From bean to bar

While cocoa beans in their natural form contain a high amount of antioxidant compounds, the processes involved in turning beans into a bar reduces the cocoa flavanol content, lowering the antioxidant properties of the cocoa.

Indeed, research shows that natural cocoa powder contains almost ten times more flavanols than cocoa that has been through this process.

As for chocolate bars, dark chocolate almost always contains a higher concentration of flavanols than milk chocolate. For example, a 25g serving of high percentage (more than 75%) dark chocolate can contain more than 80mg cocoa flavanols compared with around 10mg or lower per 25g for a milk chocolate bar.

Health benefits

Research has found that dark chocolate and cocoa products containing at least 200mg of cocoa flavanols can help to keep blood vessels elastic, which helps with blood flow. And regularly consuming cocoa flavanols – even doses of 80mg a day – improves blood vessels’ ability to dilate or expand, which helps the body regulate blood pressure and blood flow to organs.

This is thought to be because cocoa flavanols increase the concentration of bioactive nitric oxide. This is a molecule involved in the widening of blood vessels that also has anti-inflammatory properties and reduces the formation of blood clots, all of which can have beneficial effects on blood pressure.

Cocoa flavanols can also increase blood flow to the brain, which may improve cognitive performance. And they may help to reduce cognitive decline by protecting the brain from free radical damage.

Chocolate with cacao beans

Chocolate in all its forms. Andreas Kraus/Shutterstock

Alongside cardiovascular and cognitive benefits, cocoa flavanols may also help improve muscle recovery following strenuous exercise, thanks to their potent antioxidant and anti-inflammatory benefits.

So chocolate can be more than just a sweet treat, but you’ll need to select dark chocolate with a high cocoa content or natural cocoa powder if you want the health benefits.The Conversation

Liam Corr, PhD Researcher in the Department of Health Sciences, University of Huddersfield

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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