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Why Fasting for Weight Loss is the Best Way to Lose Weight

April 12, 2020 by Amber

this post

Fasting for fat loss is the best way to lose weight naturally, without relying on diet pills, weight loss powders, special detox drinks, or restrictive diet plans.

Fasting is the secret to fast fat loss that big food companies, supplement companies, and big pharma don’t want you to know about because it doesn’t generate profits for them. Fasting benefits only you, not big pharma or the supplement industry.

Disclaimer: This site contains affiliate links.

Practicing fasting for belly fat loss is such a simple way to lose weight as it requires you to eat nothing and drink water: no meal planning, no food prepping, or confusing diets. Fasting is as simple as not eating for as long as you want to fast for, all while freeing up your time and saving you money as you don’t need to buy food when you’re fasting.

So, what is fasting?

Fasting is the voluntary choice not to eat any food, whether you fast for a few hours, days, or weeks. Fasting allows the body to burn through stored body fat for weight loss.

Mainstream advertising doesn’t tell you to fast for weight loss because it doesn’t make any money. Instead, people are advised to eat breakfast as it is the most important meal of the day, to snack between meals to maintain blood sugar levels, and never miss a meal.

But the truth is a healthy body is designed to go through periods of fasting where no food is consumed. Our ancestors didn’t have packaged snacks to carry around or a fridge stocked full of food to access every few hours.

Our bodies are designed to have the ability to go through periods of fasting, which was crucial to our ancestor’s survival.

Now let me ask you a question. What do you think is the quickest way to lose weight?

By eating three healthy meals a day with snacks in-between or by fasting and not eating any food for the entire day?

Benefits of Fasting for Fat Loss

Fasting for fat loss is an effective, practical, and simple way to lose weight, and if you fast long enough, you are virtually guaranteed to lose weight by fasting.

Losing weight isn’t only about counting calories. An inability to effectively lose weight is a hormonal problem as well, and fasting for fat loss is one of the quickest ways to lose weight, reset your hormones, and lower insulin, the fat-storage hormone.

Insulin is a hormone responsible for transporting sugar out of the blood and into cells for energy use or storage. Insulin tells the body that food is coming in, so get ready for the storage of glucose.

Anytime food is eaten, insulin levels rise, signaling the body to store sugar in the liver in the form of glycogen. Once the glycogen stores are full, the excess sugar is converted into fat.

In the fasting state, the insulin levels decrease, allowing the body to burn stored sugar and body fat for energy. Lower insulin levels are why fasting for fat loss is so effective.

The most easily accessible energy source for the body is the glycogen stores in the liver. Once glycogen stores are depleted, usually after 24 hours or so of fasting, the body will start to break down stored body fat for energy.

When you are constantly eating, you consistently raise insulin levels and tell the body to store food energy, making weight loss difficult. But when you practice fasting, you will be burning stored food energy and body fat for weight loss.

Lengths and Types of Fasting Benefits

Here is what the various types of fasting for fat loss look like, as discussed by Dr. Jason Fung in The Complete Guide to Fasting:

  1. Eating: Insulin levels rise due to food coming in to transport glucose from the food into the cells. Excess glucose is stored in the liver as glycogen.

  2. The post-absorptive phase is 6-24 hours after eating and into fasting, where blood sugar levels and insulin levels begin to fall. In response to blood sugar levels dropping, the liver breaks down glycogen into sugar to maintain normal blood sugar levels.

  3. Gluconeogenesis takes place 24 hours to 2 days after starting to fast. Once glycogen stores are depleted, the liver will make glucose from amino acids via a process called gluconeogenesis (the making of new sugar from protein).

  4. Ketosis takes place 2 -3 days after fasting, where low insulin levels stimulate the breakdown of stored fat for energy through a process called lipolysis. Fat burning is what someone who is fasting for fat loss wants to achieve!

  5. The protein conservation phase begins five days after fasting, where growth hormone levels rise to maintain muscle mass. The majority of the body’s energy is supplied by fatty acids and ketones, a substitute for glucose to fuel the brain. (Yes, your brain will still work in times of fasting!)

Working through the various fasting stages causes the body to switch from burning incoming food and glucose to burning body fat for weight loss. At the start of a fast, the body is still burning sugar from the liver’s stored glycogen for the first 24-48 hours.

When glycogen stores in the liver start to get low, the body switches to fat-burning, which is why extended periods of fasting such as two days or longer are highly beneficial and effective for fat loss. If someone is fasting for longer than a few days, it is a good idea to take a good quality multivitamin to ensure the recommended daily intake of micro-nutrients.

Fasting Schedule for Fat Loss

There are no rules set in stone with how to fast for weight loss. You can practice intermittent fasting, alternate-day fasting, fasting once a week, fasting for three days, one week, two weeks, or longer. Practice a variation of fasting that works for you until you achieve your fat loss goals.

I like to practice intermittent fasting daily with a variation of 14-16 hour fasting periods which depends upon my day, hunger, and activity levels. I don’t need to lose weight, so a 14 – 16-hour fast works great for me. For someone who wants to lose weight, extended fasting for weight loss will be more effective.

The body prefers to burn glycogen instead of stored fat, so to burn body fat for fuel, fasting for two days or longer will yield quicker and more dramatic results.

Intermittent and alternate-day fasting will still be beneficial for weight loss and maintaining any weight loss as burning through glycogen stores makes room for the storage of new incoming fuel in the next meal.

When glycogen stores are available in the liver, the next meal’s incoming glucose is stored as glycogen in the liver instead of being converted into body fat.

During fasting, insulin levels decrease, which is the “fat-storing” hormone. Since all food raises insulin to some degree (with refined sugar and carbs raising insulin the most), the best way to lose weight is by fasting and eliminating all foods.

Fasting for belly fat loss will naturally lower insulin levels and improve insulin sensitivity in individuals who have developed insulin resistance due to overeating and consistently being in a “fed state.”

The most effective way to lower insulin and reverse insulin resistance to lose weight naturally is by fasting and not eating anything.

Some of the health benefits of fasting for weight loss include:

  • Induces fat loss
  • Lowers blood sugar levels
  • Improves insulin sensitivity
  • Improves fat burning
  • Decreases inflammation

Since elevated insulin levels and insulin resistance are a primary cause of weight gain, the quickest and most effective way to lower insulin levels and reverse insulin resistance is fasting for fat loss.

The body develops insulin resistance and thus elevated insulin levels when the cells are already overfilled with glucose, causing glucose to spill out of the cell and into the bloodstream leading to elevated blood glucose.

When a cell is full of fat stores, there is no storage room for glucose, so glucose spills into the bloodstream leading to elevated blood glucose and insulin resistance. The best approach to losing weight, reversing insulin resistance, and lowering high blood sugar is not eating any food.

There is no need to argue about which diet is best for losing weight, such as the keto diet or the low-fat plant-based diet; fasting for fat loss trumps both diets and is the fastest way to burn through excess sugar in the bloodstream, glycogen stores, and body fat.

Fasting is the best way to lose weight and is more powerful than any diet to reverse insulin resistance. For more information on fasting, I recommend reading The Complete Guide to Fasting by Dr. Jason Fung and Jimmy Moore.

Related Articles:

Intermittent Fasting for Weight Loss

The Connection Between Liver Health and Weight Loss

Reversing Insulin Resistance With a Low-fat Plant-based Diet

Filed Under: Insulin Resistance, Weight Management

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Reader Interactions

Comments

  1. Michele Green

    October 29, 2020 at 10:34 am

    Greetings! Based on the information you shared below that I copied and pasted, regarding the gallbladder, I was wondering does anything change regarding the bile and bile flow, if my gallbladder has been removed? I know I have fatty liver and am morbidly obese (330 pounds). I am looking forward to learning more and trying the fasting and resetting of my metabolism…I’m just wondering about what affect these things might have if I do not have a gallbladder, though I’m sure it will still be extremely beneficial to me. Is there anything I may need to consider in addition, to compensate for no gallbladder?

    Thank you!

    Phosphatidylcholine also promotes bile flow from a sluggish gallbladder. Good bile flow is crucial for liver detox and weight loss.
    Your phase 3 liver detox is where your liver dumps the toxins ready for elimination into the bile. Phosphatidylcholine is a very important nutrient involved in phase 3 liver detoxification.
    Think of phase 3 liver detoxification as the last doorway involved in liver detox. That detox door via bile flow from the gallbladder needs to be wide open.

    Reply
    • Amber

      October 30, 2020 at 10:08 pm

      Hi Michele,

      If your gallbladder has been removed then you no longer store bile in larger amounts in the gallbladder. Bile is still produced by the liver but instead of being stored in the gallbladder it consistently drips into the duodenum. When a fatty meal is eaten you may not have enough bile to properly emulsify and break down the fats due to no storage build up bile in the gallbladder. You may find it helpful to take ox bile with fatty meals to help with the digestion of fats. If you have a phosphatidylcholine deficiency then bile flow still may be sluggish along with poor transportation of fats out of the liver. Hope that helps to answer your question :)

      Reply
  2. Sydney

    March 26, 2024 at 2:18 pm

    Hi Amber! I found your website because of your information on gallbladder and liver detox/health. I have been intermittent fasting for a while to balance hormones, lose weight and help me get pregnant – I was able to get pregnant (yay!), but at 3 months postpartum I had a suspected gallbladder attack/sludge that they said was probably brought on by all the estrogen and was common in pregnant and PP women. They recommended removal, but I wanted to keep it and do what I could naturally to restore my gallbladder health. I deal with gallbladder pain occasionally, especially when I start my cycle, but now that I’ve started intermittent fasting again after finishing breastfeeding, I have been dealing with more gallbladder pain – I suspect from the bile not being in use. I plan to do the amazing liver and gallbladder flush from your post, but I wanted to know if you dealt with any gallbladder issues with your IF journey?

    Reply
    • Amber

      April 9, 2024 at 4:58 am

      Hi Sydney,

      No I never had gallbladder pain associated with intermittent fasting, but when I became pregnant I did have tenderness under my right rib cage that was quite noticable. I ate alot of beets, apple cider vinegar and took phosphatidylcholine (optimal PC) daily along with a fish oil and that tenderness went away. During pregnancy and breastfeeding there is an increased demand for phosphatiylcholine which is crucial for preventing bile from getting thick and sludgy, thus gallbladder problems can increase during pregnancy and while breastfeeding if you are not getting enough choline to make phosphatidylcholine. Have you tried supporting your gallbladder with it or anything else?

      Reply

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