Intermittent Fasting (IF) has rapidly evolved from a niche topic within fitness circles to a global health trend in recent years. Popular fasting methods such as the "16/8" and "Alternate-Day Fasting" are widely embraced due to their simplicity and ease of practice. Numerous studies indicate that these approaches can aid in weight loss, improve blood sugar control, lower cholesterol, reduce chronic inflammation markers, and may even delay aging. However, recent research also warns that excessively restricting eating windows—such as eating only 8 hours a day—may be associated with a 91% increased risk of cardiovascular mortality, especially for individuals with a history of heart disease or cancer. Therefore, experts recommend carefully selecting fasting windows and adjusting them based on individual health conditions when practicing intermittent fasting. Additionally, the refeeding phase is crucial; dietary intake should transition gradually from liquids to solid foods to avoid sharp blood sugar fluctuations or gastrointestinal discomfort. In summary, intermittent fasting is not just a dietary regimen but a lifestyle choice, and when practiced cautiously under professional guidance, it may offer a promising option for improving health.