Dr Eric Westman, current president of the American Society of Bariatric Physicians, talks through the steps of starting a ketogenic diet and discusses some of the things you can do to make your life easier.

One useful tip I learned was that a cup of greens or other veggies is roughly equivalent to a fist-size. I loathe measuring cauliflower and broccoli, mostly because I don’t care for being that precise, so this is a great way to learn to eyeball a serving of veggies.