Again, I wouldn't say intermittent fasting is for everyone, but it has made a big difference in my life. It has allowed me to feel in control of my relationship with food and less anxious about it in general, which is always a good thing. I feel more energetic, I'm continuing to lose weight, and I generally feel amazing. I'll definitely be doing intermittent fasting for the foreseeable future.
Another study, this one out of the University of Southern California, discovered that when 71 adults were placed on a five-day fast (eating between 750 and 1,100 calories a day) once every three months, they lost an average of 6 pounds, reduced inflammation levels and their waistlines and lost total body fat without sacrificing muscle mass. (2) If you want to lose weight and lose belly fat, fasting even irregularly could be the key.
A randomized controlled trial that followed 100 obese individuals for one year did not find intermittent fasting to be more effective than daily calorie restriction.  For the 6-month weight loss phase, subjects were either placed on an alternating day fast (alternating days of one meal of 25% of baseline calories versus 125% of baseline calories divided over three meals) or daily calorie restriction (75% of baseline calories divided over three meals) following the American Heart Association guidelines. After 6 months, calorie levels were increased by 25% in both groups with a goal of weight maintenance. Participant characteristics of the groups were similar; mostly women and generally healthy. The trial examined weight changes, compliance rates, and cardiovascular risk factors. Their findings when comparing the two groups:
This type of fasting is also known as cyclic fasting. Intermittent fasting is a catch-all phrase for eating (and not eating) intermittently. In fact, almost all of the fasting methods below are types of intermittent fasting! Typical intermittent fast times range from 14 to 18 hours. The longest period any one of these plans would require you to abstain from solid food would be about 32–36 hours.
Fasting has been used therapeutically since at least the 5th century bce, when Greek physician Hippocrates recommended abstinence from food or drink for patients who exhibited certain symptoms of illness. Some physicians recognized a fasting instinct, whereby patients in certain disease states naturally experience a loss of appetite. Some physicians believed that administering food during such states was unnecessary and possibly even detrimental, since fasting was thought to be an important natural part of the recovery process.
The second one is more subtle: The body shifts into fat-burning mode when it doesn’t get food for an extended period of time. That’s because the body’s first source of fuel is glycogen, and it only turns to burning body fat once that quickly available energy source is depleted. So when you fast for long enough, you drive down stores of glycogen and start burning fat tissue. “In people, we see a change in fasting glucose — it’s lower — and abdominal fat is affected without much of an effect on the muscles,” Longo explained.
When Jesus returns, fasting will be done. It’s a temporary measure, for this life and age, to enrich our joy in Jesus and prepare our hearts for the next — for seeing him face to face. When he returns, he will not call a fast, but throw a feast; then all holy abstinence will have served its glorious purpose and be seen by all for the stunning gift it was.
Abstinence from food and/or drink as an element of private or public religious devotion. Fasting is nowhere commanded in the Torah and, in fact, is never attested earlier than the time of the judges of Israel (cf. Judges 20:26 ). The fact that Jesus and the disciples sanctioned it by their own example ( Matt 4:2 ; Acts 13:2-3 ), however, is sufficient justification for its practice in biblical times and, in fact, in modern times as well.
Fasting should not be considered a "dieting method" either. We shouldn't fast to lose weight, but rather to gain deeper fellowship with God. Yes, anyone can fast. Some may not be able to fast from food (diabetics, for example), but everyone can temporarily give up something in order to focus on God. Even unplugging the television for a period of time can be an effective fast.