Are the weight loss claims about these ingredients necessarily true? It seems to depend on the type of thermogenic fat burners in question, the active ingredients that are used in the products, dosages taken and an individual person’s response. Active ingredients that are commonly used in thermogenic supplements vary by brand but usually contain a mix of stimulants, herbs and acids. Testimonials, along with findings from certain studies, suggest that thermogenics do seem to work for some — however in some cases their ingredients can also be dangerous or totally ineffective.
CLA: Conjugated linoleic acid, or CLA, is a naturally occurring fatty acid, similar to an omega-6 fatty acid. Even though CLA is a fat, studies show that consuming 1.4-3.0 grams per day can lead to overall body-fat loss.[3,4] It can also help you retain muscle during periods of weight loss, as kinesiologist Ciaran Fairman, Ph.D., explains in the article "Your Expert Guide to CLA." Remember, muscle is your ally for long-term success!
CLA is the name given to group of chemicals found in the fatty acid called linoleic acid. Because it’s a type of polyunsaturated fat, we don’t make conjugated linoleic acid on our own and must obtain it from the foods in our diets. A few of the major sources of CLA in your diet may include full-fat dairy products like whole milk or cheese, beef, and butter. CLA is also found in some bodybuilding supplements, protein powders or weight loss formulas.
This Asian veggie dish is made by fermenting a blend of cabbage, radishes, and scallions with a seasoned paste of red pepper, salted shrimp, or kelp (koji) powder. Fermented foods are great for healing your gut thanks to the high levels of probiotics, but the unique strains found in kimchi may also help you stay slim: Researchers at Kyung Hee University in Korea induced obesity in lab rats by feeding them a high-fat diet. The group that got a Lactobacillus brevis supplement— the culture strain found in kimchi—was able to suppress the diet-induced increase in weight gain by 28 percent! If kimchi isn't your thing, also consider adding one of these probiotic foods for a healthier gut to your diet.
Had enough of boring rice? Add some bulgur into your diet. Although this grain is traditionally used in tabbouleh—a staple dish of Mediterranean cooking made by combining bulgur with chopped parsley, garlic, diced tomatoes, olive oil, and lemon juice—you can also use it as a base of salad bowls or a side for a chicken dish. This cereal will help you burn fat thanks to boasting over eight grams of belly-filling fiber; A study published in the journal Annals of Internal Medicine found that by simply increasing the amount of fiber you eat each day (to 30 grams) while keeping calories the same could help you lose weight, lower blood pressure, and improve your body's insulin response as effectively as more complicated diets that try to overhaul your entire diet.
Some cheat meals are better than others. And a high-carbohydrate, moderate-protein meal, however "naughty," can help you stay on track. The reason: Carbohydrates have the greatest influence on leptin levels, which help you burn fat and feel satisfied. And protein has the greatest influence on satiety because of its influence on appetite-regulating hormones and high thermic effect—the process of digesting protein requires more energy of your body than any other macronutrient. So, go ahead and grab a bowl of spaghetti and meatballs. Contrary to popular belief, pasta is actually a fairly low-glycemic food, meaning it won't drastically spike your blood sugar levels.
This ancient grain will make that flat tire around your waist history! Quinoa is a complete protein, meaning that it contains the complete chain of amino acids that are necessary for muscle building and fat loss. In a 2015 study in the Journal of Diabetes Investigation, researchers discovered that patients who ingested higher amounts of vegetable protein were far less susceptible to metabolic syndrome (a combination of high cholesterol, high blood sugar, and obesity). Before you thought it couldn't get any better, there's more: quinoa has the highest level of betaine, according to a Food Chemistry study. Why is that important? Well, a Nutrients study linked betaine supplementation to a revved metabolism and inhibition of fat production.
A longtime enemy of doctors and dieters, pork has been coming around as a healthier alternative of late–as long as you choose the right cut. Your best bet is pork tenderloin. A three-ounce serving of pork tenderloin has slightly less fat than a skinless chicken breast; It has 24 grams of protein per serving and 83 milligrams of choline. In a study published in the journal Nutrients, scientists asked 144 overweight people to eat a diet rich in fresh lean pork. After three months, the group saw a significant reduction in waist size, BMI and belly fat, with no reduction in muscle mass! They speculate that the amino acid profile of pork protein may contribute to greater fat burning.
The researchers explain that people who cook their own meals may simply have other good-for-you habits, like exercising more. However, they also concluded that home cooks ate more fruits and vegetables (along with a wider variety of foods), have healthier methods of prepping their food, and splurge less on foods high in calories and sugar. Consider any of the healthy eating books below to get started.

Sunny side up, scrambled, hard-boiled, or fried—it doesn't matter. A pan, spatula, and carton of eggs are all you need to fry some serious flab. Eggs are one of the best sources of choline, a major fat-burning nutrient that helps turn off the genes responsible for belly-fat storage. Bonus: eggs are a great source of lean protein, which can set the fat-burning pace for your entire day when eaten for breakfast. In a study of 21 men published in the journal Nutrition Research, half were fed a breakfast of bagels while half ate eggs. The egg group were observed to have a lower response to ghrelin, were less hungry three hours later and consumed fewer calories for the next 24 hours!

Green tea has been tested in many studies, and results have shown that it can help you burn up to 16 percent more fat each day. Green select phytosome is another form of green tea extract, and one study found that taking it caused individuals on a diet to lose more than 30 pounds in three months, as compared to the 10 pounds that diet-only participants lost.


L‐carnitine: This stimulant-free amino acid has been physique athletes' secret weapon for decades. Taken once or twice daily with food, it can also help your body convert stored body fat into energy, leaving you leaner and more defined. It does this by breaking up fatty acids so the body can use them for fuel. As Jim Stoppani, Ph.D., explains in "Your Expert Guide to L-Carnitine," it has also been shown in studies to support recovery from workouts, reduce muscle damage, and even reduce exercise-induced muscle soreness.
This classic lunchbox sandwich condiment is teeming with flat-belly nutrients such as cholesterol-lowering monounsaturated fats and is a great source of plant-based protein. According to a recent study presented at the annual Society for Endocrinology conference, researchers found that when protein is digested and broken down into amino acids in your body, one of those amino acids—phenylalanine—triggers hormones that help reduce appetite and ultimately leads to fat burn and weight loss. Go for brands that have an ingredient list of just two items: nuts and a little salt, or look to our guide: Best and Worst Peanut Butters.
Who Makes It: Fat Burner is made by Transparent Labs! As one of the most exciting supplement brands, Transparent Labs products are only available through their website, which helps you to save a tremendous amount of money typically charged by your local supplement shop. Keep an eye on Transparent Labs this year, as we’ve heard they’ve got some very exciting new products on the way!

This classic lunchbox sandwich condiment is teeming with flat-belly nutrients such as cholesterol-lowering monounsaturated fats and is a great source of plant-based protein. According to a recent study presented at the annual Society for Endocrinology conference, researchers found that when protein is digested and broken down into amino acids in your body, one of those amino acids—phenylalanine—triggers hormones that help reduce appetite and ultimately leads to fat burn and weight loss. Go for brands that have an ingredient list of just two items: nuts and a little salt, or look to our guide: Best and Worst Peanut Butters.

So what are the best weight loss supplements available on the market that don’t pose these same risks? As you’ll learn below, natural ways to help you reach and maintain a healthy weight include consuming food-based fat burners like conjugated linoleic acid (CLA), certain fat-burning foods that are high in protein and fiber, green tea, or using grapefruit essential oil — in addition, of course, to lifestyle habits like eating a healthy diet and staying active.


The main ingredient in most fat burners is caffeine, which helps you lose weight by increasing your metabolism and helping the body use fat for fuel. It also helps provide energy for exercise and other calorie-burning activities. In the body, caffeine increases the breakdown of fatty acids that reside in adipose tissue—also known as belly fat. Once the fatty acids are broken down, they enter the bloodstream and can be burned up by our bodies to create energy.

Red is one of the best colors for weight loss. That's because the color is due to higher levels of nutrients called flavonoids—particularly anthocyanins—which calm the action of fat-storage genes, according to Oxidative Medicine and Cellular Longevity research. In fact, red-bellied stone fruits like plums boast phenolic compounds that have been shown to "turn off" fat genes. Plus, their pectin—a gelatin-like type of fiber found in the cell walls of fruits—limits the amount of fat your cells can absorb, as shown by a Nutrition & Metabolism study.

One of the best ways to get the benefits of green tea is to consume matcha green tea, a concentrated powdered green tea from Japan that seems to have some noteworthy fat-burning benefits. What’s in matcha that makes it so beneficial for everything from cognitive function to enhancing fat-burning? It’s the catechins, a type of antioxidant found in high levels in green tea that may reduce body weight, speed up recovery following workouts and decrease free radical damage.
Guarana: Guarana has among the highest concentrations of caffeine in any plant; it contain up to 3.5 percent to 5.8 percent caffeine by volume, while coffee only has up to 2 percent. For increased energy and enhanced mental focus, some people use between 200 to 800 milligrams of guarana a day, which seems to be generally safe. However, side effects for some can include those similar to consuming too caffeine, such as difficulty sleeping, indigestion, anxiety, changes in blood pressure, dependence and a quickened heartbeat. Guarana can also interact with medicines like some antidepressants, lithium, sedatives, other stimulants and blood thinners.
Sometimes, to whip your body into shape, you have to get a little nutty. While nuts are high in fat, it's that very fat that makes them such powerful weapons in the war against a ballooning belly. In fact, a study published in Diabetes Care revealed that study participants who consumed a diet rich in monounsaturated fats, like those in nuts, over a 28-day period gained less belly fat than their saturated fat-consuming counterparts while improving their insulin sensitivity.
Do you even lift, bro? If you're serious about getting rid of that belly fat fast, resistance training might just be the key. A study from the Harvard School of Public Health found that adding weight training to adult male test subjects' workouts significantly reduced their risk of abdominal obesity over a multi-year study period, although doing the same amount of cardio had no such effect. Research from the University of Maryland even found that just 16 weeks of weight training boosted study participants' metabolic rates by a whopping 7.7 percent, making it easier to ditch those extra inches around your middle.
Caffeine is often included in fat-burning supplements the form of yerba mate or guarana — however, manufacturers may include these substances in amounts they’re rarely used otherwise. Caffeine is a common weight loss ingredient because it often has the effect of dulling someone’s appetite and help increase energy for activity. However, too much caffeine can cause side effects like jitteriness, headaches, insomnia, anxiety, heart palpitations, diarrhea and more.
The fat-burning equation is simple: Protein builds muscle. More muscle = more fat burning. And fish is one of the healthiest sources of lean protein—especially wild salmon, says dietitian Lauren Minchen, MPH, RD, CDN. It's also a rich source of anti-inflammatory omega-3 fatty acids, which fuel fat burning, block fat storage and aid weight loss, she explains. But that's not all: "Getting enough protein and healthy fat also helps to reduce cravings and has been shown to help keep weight off for longer," adds Alissa Rumsey, MS, RD, CDN, CSCS.
You say tomato, I say 9-oxo-ODA. That's the name of a compound found in the brilliant red fruits that Japanese researchers recently discovered can effectively activate your DNA to burn more fat. Tomatoes are also brimming in beta-carotene and lycopene, two potent antioxidants that mop up harmful compounds that promote fat storage. One Journal of Nutrition study found people whose diets contained the most beta-carotene and lycopene had the smallest waists and the least belly fat. And at only 5 calories apiece, grab a few sun-dried tomatoes! Cooked tomatoes contain more bioavailable lycopene than raw tomatoes, according to Cornell University researchers.

Coconut Oil: Thanks to the medium-chain fatty acids it contains, coconut oil (and similar fats, such as ghee) can actually help your body burn fat for fuel and use up more energy during everyday functions like digestion. Healthy fats like coconut oil have also been found to be very satisfying for hunger and may support thyroid health, which is crucial for maintaining a strong metabolism. Swapping out refined vegetable oils for coconut oil in your cooking is a simple way to get more in your diet.


Hunter Burn contains the key ingredients you’ll find in other products, but at much higher doses. For example, it contains matcha green tea, a variant of the green tea extract you find in other products. The difference is this type of green tea is three times stronger – and (in theory) it could help burn calories even faster. Hunter Burn also contains konjac root, which is said to reduce hunger. To finish off, a good dose of vitamin D3 is thought to help you lose weight, but gain muscle. The larger servings make up for the high price, giving you a range of meticulously-researched ingredients in optimal amounts.
Probiotics are “good bacteria” found in fermented foods or drinks, and also supplements. These bacteria reside in your gastrointestinal tract (also called the microbiome) and have many functions throughout your body. Research suggests that probiotics have numerous benefits for immune, digestive, hormonal and central nervous system functions. Studies have indicated that there are differences in the microbial composition between obese and non-obese patients, and probiotics are involved in energy homeostasis, regulation of appetite, dietary intake and storage of lipids (fats).

The internal and external obliques, which I like to call "nature's girdle," are located at the sides of the rectus abdominis. They are the muscles you use when you bend sideways at the spine or twist at the waist. They also contract to compress the abdomen, so you should work them just as hard as you work the rectus abdominis. Adding a twist to crunches works, as well as dumbbell side bends, but be careful not to use any jerky motions, especially if you've had back problems.
A true gem when it comes to fat burning. Taking Green tea is a safe, natural way to boost your metabolism. In it you’ll find antioxidants also known as Catechins, these activate the fat burning hormone norepiphrine and help your body achieve greater weight loss through the process of ‘Thermogenesis’. This wonder leaf will help to reduce your appetite. It’s also a nice ingredient for women as it can help your body work against the fat storing hormone Erastidiol.

Many television ads are now pitching devices that supposedly stimulate muscles to contract repeatedly without exercise. I even saw an infomercial for an "ab belt" that claimed it does the work of 700 sit-ups in 10 minutes! The ad shows people doing various abdominal exercises the wrong way, hating every second of it, versus smiling men and women going about their days with "Ab-whatevers" strapped around them. How enticing!


The fat-burning equation is simple: Protein builds muscle. More muscle = more fat burning. And fish is one of the healthiest sources of lean protein—especially wild salmon, says dietitian Lauren Minchen, MPH, RD, CDN. It's also a rich source of anti-inflammatory omega-3 fatty acids, which fuel fat burning, block fat storage and aid weight loss, she explains. But that's not all: "Getting enough protein and healthy fat also helps to reduce cravings and has been shown to help keep weight off for longer," adds Alissa Rumsey, MS, RD, CDN, CSCS.
Caffeine tolerance is lower – In the past fat burners with high stimulants made women feel worse not better. Now, the best female fat burners use natural alternatives to help you burn more calories. This means you can give your metabolic rate the boost it needs, improving your energy levels in the gym and avoiding problematic palpitations or nausea which can halt your progress.
Launched in 2018, Hunter Burn is described as a ‘premium’ fat burner. It’s aimed at the top end of the market and is designed for those looking for larger doses and higher quality ingredients. This comes at increased cost – but does it deliver? Hunter Burn features the largest serving sizes we’ve ever seen, while also using more potent forms of certain key ingredients. Some will want the cheapest on the market. But this is a highly-researched formula for men who are happy to pay more to get the best.

This content is for informational and educational purposes only. It is not intended to provide medical advice or to take the place of such advice or treatment from a personal physician. All readers/viewers of this content are advised to consult their doctors or qualified health professionals regarding specific health questions. Neither Dr. Axe nor the publisher of this content takes responsibility for possible health consequences of any person or persons reading or following the information in this educational content. All viewers of this content, especially those taking prescription or over-the-counter medications, should consult their physicians before beginning any nutrition, supplement or lifestyle program.
Instant Knockout looks great – but all the signs suggest it offers much more than pretty packaging. The product can help support your training goals, boost confidence and keep you motivated for longer as part of a good diet and exercise routine. No proprietary blends and transparent formula are big bonuses and make this product stand out on our list!
Our top 10 list of fat burners is organized to reflect what you most value in your supplements. First and foremost is quality. All of our top ten supplements meet high standards of quality and come from brands with a proven record in excellence and purity. Another important factor in deciding the top ten was cost. You don’t have to pay through the nose to get a high-quality fat burner. In addition, all the companies represented on our list have stellar records with customer service and prompt shipping. This ensures that your supplement experience is enjoyable from the first click to your final dose.

Carbs are not the enemy. Not whole-grain carbs, that is. People who ate three or more daily servings of whole grains (such as oats) had 10 percent less belly fat than people who ate the same amount of calories from processed white carbs (bread, rice, pasta), according to a Tufts University study. It's theorized that this is due to whole grains' high fiber and slow-burn properties, which keep you satiated longer.

DO IT: Assume a pushup position with your hands below your shoulders and your body forming a straight line from your head to your heels. This is the starting position. Lifting your right foot off of the floor, drive your right knee towards your chest. Tap the floor with your right foot and then return to the starting position. Alternate legs with each repetition. 
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