People who fasted for five days lost about 4% to 6% of their weight; those who fasted for seven to 10 days lost about 2% to 10%, and those who fasted for 15 to 20 days lost 7% to 10%. Only a few of the studies in the review tracked whether participants gained back the weight they had lost once the fast ended.
According to studies, the average weight loss during a juice fast can range between 5 and 10 pounds in a week, depending on factors like your starting weight, metabolism, and activity level. But in reality, it varies.
In doing the fast correctly and ensuring that it is aligning with your mind, body and soul–you can expect a good weight loss of anywhere between 2 to 6 kgs a month with excellent inch loss and increase in energy levels and brain function.
Losing 10 pounds in 3 days is an unrealistic goal for most people and could entail unsafe dieting behaviors. Rapid weight loss like this may also make it more likely that someone will put weight back on, rather than losing the weight permanently.
Depending on where you start, it could take anywhere between 10 and 20 weeks (or more) to lose 20 pounds. That may sound like a long time, but the truth is, it's better to go slow and not rush the process—especially because rapid weight loss can be risky, says personal trainer Susan Pata, NASM-CPT.
Early fasting reduces amount of abdominal fat
Upon analysis, Ruiz and his team found that all fasting groups, regardless of the time-restricted fasting method, had more weight loss — on average 3-4 kg — compared to the usual treatment group.
These changes might be subtle at first—like your clothes fitting a bit looser or noticing a slight difference in the mirror. Even if the transformation isn't dramatic right away, it's a sign that your efforts are paying off. A noticeable difference often comes after losing about 5% of your body weight.
If you are fasting for weight loss or metabolic health, then coffee or even coffee with non-insulinogenic (insulin-spiking) additions like butter, coconut oil, or heavy cream should not break your fast. However, milk, flavored creamer, sugar, and many other sweeteners will break your fast, no matter your goals.
Although fruits and vegetables are chock-full of goodness, remember a long-term juice diet would not provide your body with everything it needs to sustain healthy weight loss. Any diet that severely restricts calories and food choices will lead to nutrient deficiencies, and this will lead to cravings.
Through Dual-Energy X-ray Absorptiometry (DXA) analyses, we quantified the alterations in lean, fat, and bone mass (Fig. 1D). After seven days of fasting, lean mass diminished by 4.6 ± 0.3 kg, an 8.0% decrease.
“When you're swapping out food for juice, you end up not consuming adequate nutrition,” Sommer says. “You're not getting enough calories, protein or fiber. That can actually slow down your metabolism, which won't help you lose weight.
What is the fastest way to lose belly fat in a week? Doing cardio and abdominal exercises every day, coupled with a healthy diet (that is low in calories, fats, and sugars) is an efficient strategy for losing belly fat quickly.
The Science of Fat Loss
Think of it like a balloon losing air—it deflates, but doesn't disappear immediately. Over time, your body adjusts, but the jiggly feeling can be a temporary step along the way.
You should reduce your intake of processed, carb-heavy foods like cookies, chips and soda. Is is possible to lose between five to ten pounds in two weeks, although this weight loss will vary depending on each person's metabolism. Food intake should be carefully monitored and combined with regular physical activity.
The 3-Day Diet, also called the Military Diet, is a fad diet that claims that by drastically cutting calories for three days, you can drop 10 pounds in a week. It also encourages you to lower the amount of calories you eat for four more days after the initial three-day plan.
Studies have shown that you can help trim visceral fat or prevent its growth with both aerobic activity (such as brisk walking) and strength training (exercising with weights). Spot exercises, such as sit-ups, can tighten abdominal muscles but won't get at visceral fat. Exercise can also help keep fat from coming back.
Water weight is not usually a cause for concern, but it can be uncomfortable and recurring. Reducing salt and carbohydrate intake, keeping hydrated, and frequently exercising are all good ways to lose water weight and prevent it from returning.