Some people, like athletes who do high levels of physical activity, should be more cautious with intermittent fasting, though, Tewksbury says. It also isn’t recommended for adolescents, people over the age of 65, or anyone recovering from disordered eating, whether it be anorexia or binge eating. People with diabetes can practice intermittent fasting safely, but they should be supervised by a nutritionist or medical professional. And as with any dietary change in general, it’s good to seek professional advice, she says.
With that advice in mind, starting intermittent fasting means picking a method. The best one, Gabel says, is the strategy you think will fit best in your life—so you’ll stick to it. “You should also continue to think about making healthy choices when you are eating,” she says. “The things that make you most successful are the things that benefit anyway: higher-fiber foods, fruits and vegetables, drinking lots of water, protein-rich foods, and healthy fats.”
There are a few ways to practice intermittent fasting—these are the most popular: