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Fad diets rear their disappointing little heads in many forms. From South Beach and Atkins to keto and paleo, it seems like the opportunities to fail at a hard-to-follow, restrictive, and expensive diet are virtually endless. Rather than focusing on the next new diet to try, why not focus on changing up your eating pattern?

It’s a subtle change, but one that makes a huge difference in the scales. Intermittent fasting (or IF) has quickly gained popularity as a highly effective method for weight loss and moderation. We’ve come a long way from the sexy pineapple diet of the 1970s, but what makes intermittent fasting different than any other new weight-loss trend? We figured out the science to give you the skinny on this “new” trend dating back to our hunter-gatherer days.

What Exactly Is Intermittent Fasting?

intermittent fasting croissant graph paper

Intermittent fasting can be done in a variety of ways. Still, each method can ultimately be pared down to one basic rule: all eating and drinking must be done during a specified time frame over a 24-hour period. (This excludes water, black coffee, and plain tea.) Time frames can vary, but the most popular IF methods include:

  • 16/8 (Leangains Protocol): Skip breakfast and restrict daily eating periods to approximately eight hours, typically from the early afternoon until 9 or 10 at night. The body is in its “fasting period” for 16 hours.
  • Eat-stop-eat: In this method, a full 24-hour fast is implemented once or twice a week. This can look like not eating from dinner one evening until dinner the next day.
  • 5:2 “fast diet”: Roughly 500 to 600 calories are consumed on two non-consecutive days of the week, followed by normal caloric intake the other five days.

Regardless of the chosen method, the science remains the same. Enzymes in the gut break down carbohydrates from food and drinks into sugar molecules that can be used by our body’s cells for energy. If these sugars aren’t used, they are stored in the liver as glycogen. Leftover glycogen is then converted into fat, which turns into the squishy bits on our tums and bums we’re so often trying to flatten and firm.

Intermittent fasting forces the body to turn to stored fat cells for energy as opposed to running on a continuous supply of calories from meals, drinks, and snacks in between. Simply put, depleted fat stores = weight loss.

Weighing the Pros and Cons: Is Intermittent Fasting Safe?

In a word, yes, intermittent fasting is completely safe when done correctly. In fact, humans are evolutionarily designed to survive small periods of fasting. Hunter-gatherers didn’t always have consistent access to food. To withstand not-so-fruitful hunts and harvests, the body learned how to utilize stored fat cells for energy.

(It’s important to note that the human body is only meant to withstand small periods of fasting. Starving the body of nutrients over a prolonged period of time can actually cause fat storage to increase, so be sure to keep the “intermittent” in intermittent fasting.)

Additionally, the human body needs to be in the right rhythm. Circadian rhythms dictate many of our bodies’ processes over a 24-hour period, including sleep, food absorption, and energy storage. For example, roughly 45 minutes after waking up, the “stress” hormone cortisol spikes, impeding glucose regulation. Eating too early during this spike can overwhelm the pancreas, which is responsible for maintaining healthy blood sugar levels, causing an increase in fat storage due to an inability to process the carbohydrates from your breakfast properly.

Eating too late can also cause a dropped beat or two. Melatonin is released approximately two to three hours before the body’s internal bedtime, preparing the pancreas (and the rest of the body) for sleep. Late-night snacks or drinks can’t be properly processed by a sleepy pancreas, which leads to—you guessed it—fat storage and weight gain.

For extra help with accountability, keeping track of your progress, and meal plan inspiration, download DoFasting to your phone. DoFasting is a virtual IF assistant that creates customized meal plans catered to your specific weight loss and health goals and dietary restrictions. The DoFasting app offers many different fasting types, including 12, 14, 16,18, 24, and even 36-hour fasts. Take the free quiz to find out more about the DoFasting app.

Tipping the Scales: Intermittent Fasting Does More Than Shed Pounds

Female bare feet on weight scale

While the research on the long-term benefits of intermittent fasting is fairly young, preliminary findings suggest time-restricted eating does far more than lower the number on the scale. Potential health benefits of IF include:

  • Improved metabolism. Switching to stored fat cells for energy, or metabolic switching, has been shown to improve the body’s metabolic speed and flexibility. This allows the body to burn more calories and maintain weight during periods of sporadic caloric intake (ergo, those upcoming holiday feasts are less likely to pack on the pounds).
  • Lower blood sugar. Allowing the pancreas to fully process the body’s glucose levels keeps blood sugar and insulin sensitivity low, protecting against type 2 diabetes.
  • Lessens inflammation. Intermittent fasting reduces the release of pro-inflammatory cells called “monocytes” into the bloodstream, improving symptoms of chronic inflammatory diseases like arthritis and asthma.
  • Reduced risk of cancer and longer life. Research suggests fasting states help promote autophagy, the cells’ natural process of removing toxins and recycling damaged or otherwise non-functioning organelles. Regularly cleaning out cells can help reduce abnormal growths, the risk of cancer, and increases lifespan.
  • Enhanced brain function. Fasting increases the brain hormone BDNF, which aids in the growth of new nerve cells, mood regulation, and may protect against Alzheimer’s disease.

Intermittent Fasting's Heavy-Hitter: Accessibility

healthy foods

The best part about intermittent fasting is how easy it is. Embarking on a new diet can often mean investing money into online programs, monthly subscriptions, expensive groceries, or a pricey combination of the three. Intermittent fasting’s greatest quality is its accessibility: all that’s required to adopt this routine is the ability to tell time.

Generally speaking, it doesn’t matter what you eat when you’re intermittently fasting, only when you eat it. A fasting period should be just that: a fast. Even a small splash of creamer in a morning cup of coffee can switch the body’s metabolic processes from drawing energy from fat to drawing energy from sugar. Water, black coffee, or plain tea should be all that’s consumed during a fasting period. During an eating period, there are far fewer regulations (which makes this food regimen so appealing to so many).

Having said that, practicality and moderation are important. Binging on processed foods, alcohol, and sugar for eight hours a day will not offer the same results as a time-restricted diet of whole grains, fruit, vegetables, lean protein, and healthy fats, also known as the Mediterranean diet. Already following an eating plan? DoFasting allows you to easily incorporate caloric, ketogenic, vegetarian, low-fat, Mediterranean, vegan, diabetic, pescetarian, paleo, GERD diets into intermittent fasting.

No amount of dieting, time-restricted or otherwise, can overcome improper nutrition. To err is human, and to give in to a salty or sweet craving every now and then is divine. There are no “bad” foods in this diet, only foods that are poorly-timed or overly-consumed. Intermittent fasting allows you to approach a diet as something to sustain, nurture, and restore the body, not something to control and restrict out of fear, guilt, or shame. DoFasting helps keep you on track.

Is Intermittent Fasting Right for You?

freedomz via Canva.com

Everybody is different, and every body reacts differently to time-restricted eating. Those who are underweight or have previously suffered from an eating disorder should contact a physician before starting an IF regimen and should only continue under close supervision. Individuals with diabetes, problems with regulating blood sugar or blood pressure, or those taking certain prescription medications should also consult their doctor before fasting.

There is little research on how IF affects male humans as opposed to females, but a 2007 study conducted on rats showed a time-restricted diet had the potential to produce more adverse effects in a female as opposed to her male counterpart, including emaciation, masculinization, infertility, and amenorrhea, or a stop in menstruation. So far, similar effects on female humans are rare and anecdotal.

Therefore, women should approach intermittent fasting mildly. Easing into a time-restricted diet can help monitor any potential adverse reactions and help the body more safely acclimate to a new routine. If you are pregnant, breastfeeding, struggling with fertility, or trying to conceive, consider waiting to adopt an IF regimen. Stop fasting immediately and consult your physician if you experience loss of your menstrual cycle.

DoFasting, the revolutionary fasting assistant app, is an invaluable resource for choosing which fasting method fits with your lifestyle. In addition to 20 different diets to choose from, DoFasting also offers over 5,000 recipes, plus a calorie-tracker, water-tracker, and meal-tracker. This hand app also features healthy meal recommendations, encouraging motivational boosts and friendly reminders, and simple workouts to incorporate into your daily routine. Plus, DoFasting's new challenge mode gives you a daily fasting schedule as well as healthy nutrition, habit formation, and exercise advice. Start fasting today with DoFasting, your personal fasting assistant.

Ultimately, intermittent fasting is a safe and effective way of losing weight and improving your overall health for the long haul. Intermittent fasting offers a less restricted and easier-to-follow alternative to the dreaded fad diet and keeps you in tune with your body's natural processes. Of course, as with any major changes in your day-to-day routine, it’s absolutely critical to be safe, be smart, and always listen to your body.

Take a free quiz and get your personalized DoFastign App today!

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