Blue Zones founder Dan Buettner has revealed that 'one of the secrets to health and longevity' can be found in the Icarian diet.

The explorer and researcher, 64, told his followers on Instagram to take note of the nutrient-rich diet of those living on the Greek island of Icaria.

The National Geographic fellow has studied the lifestyle of locals living on Icaria and has identified it as one of the world's Blue Zones. 

Blue Zones are one of the areas on our planet where people regularly live into their old age.

Buettner has become well known for his research into his areas including for his Netflix documentary - How to Live to 100.

The expert studies everything about these zones from their exercise routines and family dynamics to their diets and roles in the wider community.

Recently, the educator took to the social media platform to urge people to follow the example of the Icarian diet by adding wild greens to their routines. 

Locals reportedly gather 150 different varieties of greens to use in their salads and pies.

Buettner explained that "these greens pack a powerful punch" and that they even contain "more than ten times the antioxidants found in red wine".

The expert recommends adding these greens to our diets to boost our immune systems, reduce inflammation and improve our heart health.

The explorer comes Icaria to his homeland - the United States - where he explains that Americans spend so much time trying to eradicate these wild greens from their gardens.

@uktoday_ Do you love Pasta? Dan Buettner has some good news for you #uknews #pastatiktok #pastapasta #uknewsheadlines ♬ original sound - UKToday 🇬🇧 Newsquest

"It's a huge longevity secret that we just throw away!" Buettner explained.

The Icarians explained in the video that they eat the wild greens dressed in lemon and olive oil.

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They also take the leftover juice and make a tea out if it.

Many took to the comments to ask whether there's a clear way that people can distinguish between what is edible and what is not.

Before eating any wild foods, it is recommended that you consult a reliable forager's guide.