Meat

The vegan trying to make the perfect burger

The grey-haired, former paediatrician turned professor at Stanford University School of Medicine, now turned start-up founder, may be softly spoken but he doesn't mince his words.

A vegan, he's come to the World Economic Forum in Davos to evangelise about how ditching meat can save the planet.

At Davos, where helping the United Nations reach its goal of eradicating hunger by 2030 is one of its goals, he's got a receptive audience.

Processed meat 'could be bad for asthma'

Consuming more than four portions a week is a risk, suggests the study of nearly 1,000 French people, published in the journal Thorax.

The researchers believe it could be a preservative called nitrite used in meats such as sausages, salami and ham that aggravates the airways.

But experts say the link has not been proved and more investigations are needed.

Rather than worry about one type of food, people should be eating a healthy and varied diet, they advise.

If meat causes cancer, what can we eat?

So what in the world is there left to eat so you can stay healthy?

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