Intermittent Fasting and Type 2 Diabetes: What You Should Know

Original Article: https://www.medscape.com/viewarticle/intermittent-fasting-and-type-2-diabetes-when-recommend-and-2025a1000he8

Understanding Intermittent Fasting
Intermittent fasting (IF) is a way of eating that focuses on when you eat rather than what you eat. It involves cycles of eating and fasting—such as only eating during a 6 to 10-hour window each day, skipping meals on certain days, or fasting every other day. During fasting periods, your body shifts from using sugar (glucose) for energy to burning stored fat. This process, known as the “metabolic switch,” can help reduce fat storage, protect muscle, and encourage the body to use fat for fuel.

When Intermittent Fasting Might Help
Some people with type 2 diabetes may benefit from intermittent fasting, especially if they are motivated, regularly monitor their blood sugar, and can adjust their medications as needed. Studies have shown that IF can support weight loss, stabilize blood sugar levels, and lower insulin resistance. These benefits can make diabetes easier to manage. However, IF is not right for everyone. People need access to healthy food, a predictable daily routine, and support from healthcare professionals in order to safely try this approach.

Possible Risks and What to Watch For
Although IF can have benefits, it also comes with risks—particularly for people with type 2 diabetes. One major concern is low blood sugar (hypoglycemia), especially in those who take insulin or other blood sugar-lowering medications. It’s important to adjust medication doses and monitor blood sugar closely. Another risk is poor nutrition. Eating less frequently might lead to not getting enough protein, vitamins, or minerals—especially if someone is taking appetite-reducing medications including GLP-1s. Dehydration can also be a problem, particularly for people on certain diabetes medications. Other side effects may include hunger, fatigue, headaches, or dizziness.

Bottom Line
Intermittent fasting may be a helpful tool for managing type 2 diabetes when used carefully and under medical supervision. While it can promote weight loss and improve blood sugar control, it also requires thoughtful planning to avoid serious risks. People interested in IF should work closely with their healthcare providers to make sure it’s safe and effective for their specific needs.