An extensive study by a global team of scientists evaluated 22 different studies that compared intermittent fasting with various dietary methods, such as consuming fewer calories or following specific food regimes. They also included comparisons with a control group that did not modify their diet. The findings suggested that intermittent fasting was not effective for weight loss in overweight or obese adults compared to the other dietary strategies and control methods.
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Intermittent fasting has gained significant popularity, especially among influencers on platforms like TikTok and Instagram, as well as celebrities such as Hugh Jackman and Kourtney Kardashian.
This dietary approach focuses on timing rather than the quantity or quality of food consumed. The underlying theory is that short periods of fasting can prompt the body to utilize stored fat for energy. However, recent research calls this widely held belief into question. A latest literature review, conducted by a team of international scientists, indicates that intermittent fasting may not be as effective as once thought.
The researchers reviewed 22 smaller studies that contrasted intermittent fasting with conventional dietary guidelines and with inaction. Their conclusion was that intermittent fasting resulted in minimal, if any, weight loss benefits.
Before you opt to skip a meal or two, it’s wise to consider whether such a decision is scientifically justified. Additionally, if you have any health concerns, it’s best to consult with a healthcare professional.
If you have a scientific question you’d like addressed, feel free to reach out via email at shortwave@npr.org.
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This episode was produced by Rachel Carlson, Jordan-Marie Smith, and Hannah Chinn, with editing by Christopher Intagliata, William Troop, and Rebecca Ramirez. Fact-checking was conducted by Tyler Jones. The audio engineering was handled by Peter Elena and Jimmy Keeley.
