Harvard professor Walter Willett is one of the most influential nutritionists in the world whose studies tracking hundred of thousands of health professionals have resulted in data shaping what we eat and how it affects our health:

“He’s tasting an almond-and-grape gazpacho when someone brings over a woman named Cindy Goody and, by way of introduction, says, ‘Walter, she’s trying to do good work at McDonald’s.’

“He phrases his greeting in the form of a question, ‘Why can’t you make a good veggie burger?’

“Goody, the senior director of nutrition for the 14,000 US outlets, appears taken aback. ‘We tried it,’ she says tentatively.

“‘Aw, that was a setup!’ Willett complains, waving his hand. He tasted one many years ago in an airport McDonald’s, and it was so awful he couldn’t finish it. ‘I’m convinced you guys made it bad to turn off people from veggie burgers.’”