Recent evidence, however, has raised questions about the strength of these claims. Depending on the study, intermittent fasting may be shown to be more effective than other diets, or less effective. One even suggested that the practice can be harmful, increasing the risk of cardiovascular disease. The scientists don’t always agree on all the facts, says Krista Varady, a professor of nutrition at the University of Illinois at Chicago, never mind the influencers. “It’s not magic.”
