Last Updated: Jun 16, 2021
Categorized in: Reviews, Supplement Reviews

Protein World Carb Blocker Review – Can It Really Stop Carbs From Becoming Fat?

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Protein World Carb Blocker Review

The folks at Protein World know a thing or two about maintaining a slim, healthy beach bod, and they’re here to help plan your eating program so that you can focus on better things, such as fun! 

They do this by combining sports nutrition and pharmaceuticals that help you hit your weight loss and weight management goals. This includes a wide variety of protein and meal replacement options such as their Slender Blend formula, as well as fat blockers, fat burners, and carb blockers, the latter of which we’re here to take a look at. 

So, what does Protein World Carb Blocker have to offer? And, more importantly maybe, is it worth the price? We will take a closer look at this supplement, its ingredients, and whether or not it’s worth buying in this complete review of Protein World Carb Blocker.

So, let’s dive right in!

About Protein World Carb Blocker

As its name implies, Protein World Carb Blocker blocks carbs. More specifically, it prevents them from being broken down and stored as fat, making it the perfect cheat day partner. It’s a simple formula that combines white kidney bean extract, Garcinia Cambogia powder, and chromium to get the job done, and as an added bonus, it can also lower your blood sugar, prevent cravings, and make weight loss less of a chore. 

This, along with your healthy diet and exercise program, can help you stay slim, trim, fit, and smokin’ hot. 

Protein World Carb Blocker

Protein World Carb Blocker Benefits

Double the Strength of Other Carb Blockers

According to Protein World, the white kidney bean extract used in their formula is the most potent available, and the Garcinia Cambogia adds more chromium for even greater nutrient metabolism. 

But not only could we not find evidence of Garcinia Cambogia being a source of chromium (it may be, it may not be…), we’re apparently just taking Protein World’s word for its claims of potency. That, and according to most sources, hydroxycitric acid (HCA), NOT chromium, is the active ingredient for the purpose in Garcinia Cambogia… 

Confused? We are too. 

Leaves Less Sugar to be Stored as Fat

By keeping carbs from being broken down to their simplest form—sugar—you not only get lower blood sugar, but less sugar stored as fat. 

Remember that sugar is easy for your body to burn. In fact, think of it as your body’s kindling, while fat is your body’s nice, big, slow-burning hardwood log. The problem is that unless you’re burning sugar as fast as it’s made available (hint: you can accomplish this by working out like a hummingbird), what you’re not burning gets stored as fat. Sugar is, after all, fuel, and fat is the form in which your body stores fuel. 

But by preventing carbs from breaking down to sugar in the first place, less is stored as fat. 

Carb Blocker by Protein World

Reduces Food Cravings

Another thing sugar does is cause you to crave more of it. That’s because not only is sugar possibly addictive, it also isn’t very filling so that your body continues to pump out ghrelin, which is the hormone that tells you you’re hungry. At the same time, peptides that signal fullness aren’t produced as readily as when you eat high protein or fibrous foods, all of which leads to that secret stash of HoHo’s and Twinkies under your desk. 

But when sugar never makes it to your bloodstream and is instead diverted from ever being broken down in the first place, there’s nothing to stimulate sugar cravings. This allows you to leave that last slice of chocolate cake safely alone, and makes late-night Twinkie runs a thing of the past. 

Protein World Carb Blocker Ingredients

Protein World Carb Blocker includes White Kidney Bean Extract, Garcinia Cambogia Whole Fruit Powder, and Chromium Picolinate. Below, we will take a closer look at each of these ingredients and what they provide within Protein World Carb Blocker.

Protein World Carb Blocker Ingredients

White Kidney Bean Extract 20:1 890mg

White kidney beans have the unique ability to block the digestive enzyme alpha-amylase, which helps prevent the breaking down of carbs. It may also help inhibit ghrelin receptors on intestinal linings thanks to a lectin it contains called phytohemagglutinin

Though more research is needed, there is promise in at least one study which shows subjects who used white kidney bean extract along with exercise and a carb-heavy diet lost weight over those given a placebo. 

Of course, it should also be noted that both groups lost weight, with those given a placebo losing slightly less than those given white kidney bean extract, which tells us what’s most important in weight management: being active, eating right, and NOT relying on the latest diet pills. 

Garcinia Cambogia Whole Fruit Powder 15% HCA 600mg

Though likely too sour for you to enjoy on its own, the skin of the Garcinia Cambogia fruit is a rich source of hydroxycitric acid, or HCA. It affects weight loss by inhibiting the production of citrate lyase, which is an enzyme that plays a role in the production of fat. 

It may also have properties that suppress your appetite and boost serotonin—AKA the “feel good” hormone—levels, though there isn’t much conclusive evidence that garcinia Cambogia makes a significant difference in weight loss over exercise and eating right alone. 

Still, it does show some promise, and it may also help reduce your risk for insulin resistance—something that can be further safeguarded against by leaving the sugar alone in the first place, which a carb blocker may be able to help you with. 

Chromium 80μg

Though some forms of chromium are toxic industrial waste, chromium picolinate is an essential mineral that helps manage how insulin is used in the body. This helps reduce insulin resistance along with lowering blood sugar, which in turn reduces cravings and your risk for obesity and diabetes. 

But as with the other two ingredients in Carb Blocker, studies show only limited efficacy in weight loss and fat reduction, though every little bit counts!

Does Protein World Carb Blocker Work?

Though there’s not a huge number of studies showing significant weight loss through the use of each of Protein World Carb Blocker’s ingredients, there is some promise, and if nothing else, it can help lower your blood sugar and risk of diabetes. 

Granted, what virtually eliminates your risk for diabetes and obesity is a healthy, whole foods eating plan along with enough hydration, exercise, and sleep, though if you’re looking for a shortcut, this product can help somewhat. 

Even so, looking for magic pills to avoid exercise, etc., simply does not work, and if you want to reduce your body fat, change your habits for the better FIRST, and only add diet pills (including carb blockers) to enhance your efforts. 

Who is Protein World Carb Blocker Best For?

If you simply can’t keep your hand out of the cookie jar, Carb Blocker may be able to help. It shows promise in inhibiting the breakdown of complex carbs into simple sugars and can also help reduce your appetite and cravings. 

But it is also a product that should be used along with a healthy eating program, exercise, hydration, and rest, and is especially beneficial on your cheat days (an important part of maintaining a healthy weight!). 

Relying on only it while indulging in a sedentary lifestyle and poor dietary habits, on the other hand, is kind of like maintaining your car by only checking the air in the tires while letting oil levels, air cleaners, etc., go to pot. 

Protein World Carb Blocker For Blocking Carbs

Claims vs. Reality

They say this product is double the strength of similar products, and that the white kidney bean extract used in it is the most potent available. 

Of course, they also say that Garcinia Cambogia is a rich source of chromium, which we can’t find any evidence of, so it’s apparent we’re just supposed to take their word for these things. 

Still, there is evidence that the ingredients in Carb Blocker can contribute somewhat to weight loss and fat reduction, just not a lot. In that, we have to request that perhaps Protein World provide us with more evidence to back their claims, since our research shows only limited efficacy of this product. 

Is Protein World Carb Blocker Safe?

Being an all-natural product that contains an essential mineral along with two plant extracts means little risk of side effects for most of us with Protein World Carb Blocker. 

Still, some may be sensitive or allergic to the ingredients in Protein World Carb Blocker, which is something you may want to verify before spending money on the product since their return policy is 14-days on unopened containers only. 

Where to Buy Protein World Carb Blocker

The good news is that at $22.99 for the one-time purchase of about 45-days-worth, this product isn’t too expensive. Plus, you can lower that to a mere $13.99 if the product works well enough for you to subscribe to regular deliveries. 

Remember, though, returns are only allowed on unopened products purchased within 2-weeks, so don’t expect a full refund if you get halfway through the bottle and find out it doesn’t work for you. 

Protein World Carb Blocker Website

Along with Protein World’s site, Carb Blocker can be purchased online through corporate retailers such as Amazon UK, as well as other UK-based independent retailers. Here in the states, it looks to only be available through their site. 


  • It’s No Has Bean: A Review of the Effects of White Kidney Bean Extract on Body Composition and Metabolic Health–
  • Blocking carbohydrate absorption and weight loss: a clinical trial using a proprietary fractionated white bean extract–
  • Safety and mechanism of appetite suppression by a novel hydroxycitric acid extract (HCA-SX)
  • The effects of 2-week ingestion of (–)-hydroxycitrate and (–)-hydroxycitrate combined with medium-chain triglycerides on satiety, fat oxidation, energy expenditure and body weight
  • Investigations of botanicals on food intake, satiety, weight loss and oxidative stress: study protocol of a double-blind, placebo-controlled, crossover study
  • Chromium picolinate supplementation for overweight or obese adults
Protein World Carb Blocker Review
  • Ingredient Quality
  • Ingredient Dosage
  • Comparison to Alternatives
  • Value


Protein World Carb Blocker is a dietary supplement designed to do exactly what it’s titled, block carbs. It works by preventing the carbs from being broken down and stored as fat. Its formula includes white kidney bean extract, Garcinia Cambogia powder, and chromium designed to block carbs, lower your blood sugar, prevent cravings, and make weight loss easier. Can this supplement help to block out your carbs? Find out in our complete review of Protein World Carb Blocker.

Disclosure: Some of the links in our articles are from our advertisers. Learn more about how we make money.

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