Research has revealed some vegan alternative products are worse for the environment than meat and dairy.

Vegans hoping to save the planet should stick to eating beans and avoid almond milk and lab-grown meat, according to new reports from Oxford University.

Nutritionist Nikki Hart explains fruit, vegetables, whole grains, and legumes are good for overall health and the climate - but they're best in their natural state.

"We don't want them to have been manipulated and to have been created with salt and preservatives and those kinds of things."

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