DoFasting Review: Does Intermittent Fasting Burn Fat?

DoFasting Review: Does Intermittent Fasting Burn Fat?

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Disclaimer: None of the information in this article constitutes medical advice. All statements are merely the opinion of the writer(s). We recommend that patients follow their doctor’s guidance in regard to fasting and weight loss.

DoFasting is a weight loss program centered on the practice of intermittent fasting. The brand has a paid phone app to track your fasting, a “smart scale,” and several supplements for weight loss.

In this article we’ll review DoFasting's app, scale and supplements to give our take on whether they're likely to be effective for weight loss, or if they're a waste of money. We'll also review medical research on intermittent fasting generally to determine if it causes weight loss.

Does Intermittent Fasting Cause Weight Loss?

Since the DoFasting program is predicated on intermittent fasting, it makes sense to first evaluate whether intermittent fasting works, because if not, it certainly would be illogical to purchase an intermittent fasting app.

A systematic review of intermittent fasting’s effects on weight loss was published in 2020 in a leading Canadian medical journal. The researchers analyzed 41 individual medical trials on the topic.

Intermittent fasting was found to be very effective for weight loss. In the 27 trials which tracked weight, every group lost weight on average. The weight loss ranged from 0.8% of baseline weight to 13% of baseline weight from the beginning to the end of the trials, which lasted from 2 to 26 weeks.

One of the surprising findings was that “weight loss occurred regardless of changes in overall caloric intake.” This suggests that intermittent fasting has positive effects on metabolism that cause individuals to burn more calories at rest.

We will conclude from the research that intermittent fasting is effective for weight loss.

DoFasting App Review

The most popular part of the DoFasting program is their weight loss app. It costs $11 per month on a 6-month plan, and $33 per month on a 1-month plan.

The app offers different fasting options, such as “beginner-friendly” options like a 14-hour fast. As the user advances and becomes more accustomed to fasting, there are options such as a 24-hour fast that the app may suggest, for up to two total days per week.

This approach seems reasonable to us, because there isn’t yet a medical standard for the most effective type of intermittent fasting. The medical review cited in the previous section included studies on various types of fasting: 16-hour fasts, alternate day fasts, “5 and 2” day fasts and more.

DoFasting's app also offers workout programs and healthy meal recipes, which may be a nice perk but we feel to be relatively unnecessary as these are easily accessible online for free.

We don’t see any harm in using the DoFasting app, but we find it to be somewhat of a waste of money. Tracking hours fasting is very easily achieved manually. If an individual decides to start intermittent fasting for 16 hours per day, all they need to do is remember (or note down) the last time they ate.

In fact, tracking intermittent fasting is much simpler than tracking calorie intake, which many people who are dieting already do without an app. Tracking calories can be cumbersome and requires food scales, and multiple data inputs to a phone. Tracking hours fasted is easy in comparison.

Put simply, we do not recommend DoFasting's app because we haven't seen any clinical evidence that it's more effective than tracking fasting manually, which is easy to do.

DoFasting Smart Scale Review

DoFasting Smart Scale

DoFasting sells a “Smart Scale” that the brand claims can track various metabolic parameters, such as metabolic age, skeletal muscle mass and visceral fat.

We don’t find any of this information to be very useful, and we don’t believe it provides much value above a basic weight scale (though it’s great for branding).

Metabolic age, which isn’t a clinically-defined term, seems to measure an individual's base metabolic rate, which means how many calories they burn at rest. We can't find any proof of the accuracy of this device on DoFasting's website.

We also are unable to locate any proof that this scale accurately tracks measures such as visceral fat, as the brand claims it does.

Similar to the app, we don’t see any harm in using this device, we just find it to be a waste of money because the benefits beyond a regular scale are unclear to us. Losing weight improves all metabolic parameters for overweight patients, and a regular scale which likely costs a fraction of the price of the Smart Scale ($99) can track weight just fine. 

For people on an intermittent fasting diet, tracking weight loss is the most important thing in our opinion. Secondary parameters like visceral fat loss will occur with weight loss, so we don't see any point in tracking these secondary attributes directly.

DoFasting Appetite Suppressant Supplement Review

DoFasting Appetite Suppressant ingredients

DoFasting sells two dietary supplements, and the most popular is their Appetite Suppressant supplement.

The supplement itself has one active ingredient: glucomannan. This is a type of fiber that we discussed at length in our review of weight loss supplement Leanbean. It is proven to be effective for inducing weight loss, but no more so than other types of fiber.

The fiber dose is only 2 grams (g) which is relatively low, especially for the $62.99 price.

DoFasting Appetite Suppressant also contains inactive ingredients like natural flavor, which is a broad descriptor that encompasses a wide variety of chemical compounds. We recommend avoiding supplements that contain "natural flavor," because it's impossible to assess the safety of the flavoring agents used unless they're specified.

The supplement also contains citric acid which is a flavoring and preservative agent we recommend avoiding, because it's often manufactured from a fungus and has contributed to whole-body inflammatory conditions in some patients according to several medical case reports.

We do not recommend this supplement due to the additive ingredients.

DoFasting Apple Cider Vinegar Supplement Review

DoFasting ACV Gummies ingredients

DoFasting sells an apple cider vinegar (ACV) gummies supplement, which the brand claims can “improve your fasting experience” without explaining how.

We recently published a research article proving the lack of health benefits of apple cider vinegar gummies. The dosage of ACV in gummies is typically too low to provide health benefits, and this trend holds true with DoFasting’s product that only provides 500 milligrams (mg) of ACV.

As our review detailed, apple cider vinegar does have some general health and metabolic benefits, mostly due to its acetic acid content, but the minimally-effective dose used in medical studies appears to be equivalent to around 15,000 mg. The dose in DoFasting’s supplement is 3% of this amount.

DoFasting’s Apple Cider Vinegar Gummies also contains added sugar, which we find to be a very questionable additive for a fasting supplement.

We do not recommend this supplement, and do not believe it will improve fasting or weight loss outcomes in any way.

DoFasting Pros and Cons

Here's our take on the pros and cons of DoFasting.


  • Likely effective
  • Relatively cheap
  • More convenient than manually tracking fasting


  • Waste of money
  • Smart Scale doesn't have proven accuracy
  • Poorly formulated supplements

Our Weight Loss Supplement Recommendations

There exist several weight loss supplements with significant clinical backing in terms of both efficacy and safety.

We recommend dietary fiber as a safe and effective weight loss supplement, especially when combined with caloric restriction.

landmark medical study found that moderate caloric restriction (750 calories per day below baseline) combined with dietary fiber intake (a minimum of 20 grams per day) caused an average weight loss of 16.03 pounds over 6 months. That’s a pace of 32 pounds per year of weight loss in overweight individuals simply by adding fiber to a moderately-restricted-calorie diet.

The fiber supplement we recommend is SuperGut Fiber Mix. It contains a clean and effective formulation: a blend of three different types of unflavored dietary fiber and zero additive ingredients. It can be mixed into liquids or foods. Interested consumers can buy SuperGut fiber at this link.

We recommend using two fiber mixes per day, which provides 16 grams (g) of total fiber. Diet should provide the remaining fiber necessary to meet the 20 g minimum threshold.

Medium-chain triglyceride (MCT) oil is another dietary supplement which has been shown in clinical trials to cause weight loss.

MCT oil is quickly absorbed by the body and increases metabolic rate, which causes fat loss. A meta-study on MCT oil documented weight loss of 1.12 pounds over 10 weeks. This equates to a potential annualized weight loss of 5.84 pounds with MCT oil supplementation.

We recommend Bulletproof MCT Oil as our top MCT oil product, because it has a clean and effective formulation. The only ingredient is MCT oil derived from coconuts, and the product has no questionable additives. Interested consumers can buy Bulletproof MCT Oil at this link.

The effective dose range of MCT oil for weight loss (based on the medical review) is 1.7 g to 10 g per day. Bulletproof's MCT oil provides 14 g in one tablespoon, so around two-thirds of one tablespoon should be a maximally-effective dosage.

Stay up-to-date on our research reviews


DoFasting is likely to be effective for weight loss, because intermittent fasting generally is effective for weight loss. However, we don't recommend DoFasting because we cannot identify any clinical evidence that it's more effective than manually tracking fasting hours. 

We have no issue with consumers with high disposable income purchasing the app for convenience, because it may be slightly more convenient than manually writing down or remembering fasting hours.

The Smart Scale doesn't appear to have any proof of accuracy. Further, we don't see any benefit of tracking advanced secondary metrics like visceral fat loss, because simply tracking weight loss will cause visceral fat loss, so tracking weight loss indirectly in a more specific way strikes us as illogical.

DoFasting sells two dietary supplements that we find to be poorly formulated, and which we recommend avoiding. 

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