People have fasted for centuries. What used to be a religious activity has become something people do for weight loss purposes, but does it really work? A new study from the University of Illinois at Chicago shed light on two fasting diets and how well they work for weight loss. Take a moment to learn about these studies as part of your ongoing weight loss education with Phentermine 37.5mg.
Four Hours & Six Hours
The study provided results from a clinical trial focused on two control groups that used a 4-hour time-restricted feeding diet and a 6-hour time-restricted feeding diet.
"This is the first human clinical trial to compare the effects of two popular forms of time-restricted feeding on body weight and cardiometabolic risk factors," said Krista Varady, professor of nutrition at the UIC College of Applied Health Sciences and one of the corresponding authors.
Participants in both groups were allowed to consume whatever they wanted during the four and six-hour periods. Those who participated in the four-hour group were asked to eat only between the hours of 1pm and 5pm, while those in the six-hour group were asked to eat between 1pm and 7pm. All participants were followed during a 10-week period, during which their insulin resistance, weight loss, LDL cholesterol, HDL cholesterol, inflammatory, triglyceride, and oxidative stress were measured.
Reduced Body Weight
The study, which was published in the journal Cell Metabolism, found individuals in both groups reduced their body weight by about 3%. Both decreased their caloric intake by about 550 calories each day, resulting in weight loss as well as lowered insulin resistance and oxidative stress. Fasting had no effect on triglyceride, cholesterol, or blood pressure levels. Additionally, weight loss did not vary significantly between the two groups.
"The findings of this study are promising and reinforce what we've seen in other studies -- fasting diets are a viable option for people who want to lose weight, especially for people who do not want to count calories or find other diets to be fatiguing," Varady said. "It's also telling that there was no added weight loss benefit for people who sustained a longer fast -- until we have further studies that directly compare the two diets or seek to study the optimal time for fasting, these results suggest that the 6-hour fast might make sense for most people who want to pursue a daily fasting diet."