Hathaway says the move to scrap her plant-based diet had an immediate and positive effect: “my brain felt like a computer rebooting,” she recalls.

The actor previously told Harper’s Bazaar that veganism did not gel well with her, saying: “I just didn’t feel good or healthy … not strong”.

Hathaway’s part as an astronaut in sci-fi drama Interstellar required her to be in peak physical condition. A gruelling filming regime saw her suspended from harnesses, floating in mid-air and braving freezing water for hours at a time; all dressed in a 40-pound space suit.

So it’s little wonder she craved an energy boost, in whatever form that took.

In this latest interview, Hathaway also discusses her decision to give up alcohol last year, for the sake of her three-year-old son.

“My issue is I just love it. So. Much,” she says. “But the way I do it makes me unavailable for my son. My last hangover lasted for five days […] I will never be that person who can nurse a glass of wine throughout an entire evening.”

Images: Getty

This is what happened when Anne Hathaway gave up being vegan