We know that the kind of food you eat has a big impact on your health, but what about the timing? Scientists are starting to discover that when you eat may be just as important. In the past, people naturally had periods of fasting when food was scarce. Intermittent fasting, or fasting diets, focus on limiting when you eat. While there are potential benefits of it, a new study has revealed it could lead us to have health issues as well. A new study published in the journal Diabetes and Metabolic Syndrome suggests that following a daily eating window of less than eight hours—a form of intermittent fasting—could double the risk of death from cardiovascular disease. While many people use intermittent fasting for weight loss and other health benefits, this research indicates a potential hidden risk. How Do Long Fasts Cause Heart Problems?The study, which analyzed data from over 19,000 U.S. adults, found that those who ate for less than eight hours a day had a 135% higher risk of dying from heart and blood vessel diseases like heart attacks or strokes, compared to people who ate within a 12 to 14-hour window. The researchers, led by senior author Victor Wenze Zhong, found that this link held true across different racial, ethnic, and socioeconomic groups. The study did not find a link between this eating pattern and a higher risk of death from cancer or other causes. However, Dr. Zhong urged caution, stating that there is currently no long-term evidence from human studies to support using a very short eating window for heart health or longevity. Can Fasting Harm Our Health?According to the National Institutes of Health, fasting can potentially harm your health, especially if done for long periods. The article notes that studies have found a higher risk of gallstones in people who fast for more than 16 to 18 hours a day. These individuals are also more likely to need surgery to have their gallbladder removed. The text also strongly advises that certain people should avoid fasting altogether. This includes individuals with specific health conditions or those taking certain medications. The information emphasizes that more research is needed to fully understand the effects of fasting. It concludes with a warning to talk with a doctor before trying any fasting diet, especially those that are not based on research. Is Intermittent Fasting Right for You? While fasting may have health benefits, experts warn that we still have a lot to learn. Some studies have linked fasting for more than 16 hours a day to a higher risk of gallstones. However, many experts agree that a 12-hour eating window followed by a 12-hour fast is likely safe for most people and matches eating patterns seen in people with long lifespans. If you are considering a fasting diet, it's essential to talk to your doctor first. People with certain health conditions or those on specific medications should not fast. And remember, what you eat still matters—even if you fast, you still need to make healthy food choices.