Not all calories are created equal.
Different foods go through different metabolic pathways in your body.
They can have vastly different effects on your hunger, hormones and the number of calories you burn.
Here are the 15 most weight-loss-friendly foods on earth that are supported by science.
1. Whole Eggs
Once feared for being high in cholesterol, whole eggs have been making a comeback.
Eggs are one of the best foods to eat if you need to lose weight. They are high in protein and fat, and are very satiating.
One study in 30 overweight women showed that eating eggs for breakfast, instead of bagels, increased feelings of fullness (satiety) and made participants eat less for the next 36 hours.
Eggs are also incredibly nutrient dense and can help you get all the nutrients you need on a calorie-restricted diet. Interestingly, almost all the nutrients are found in the yolks.
2. Leafy Greens
Leafy greens include kale, spinach, collards, swiss chards and a few others.
They have several properties that make them perfect for a weight loss diet, such as being low in calories and carbohydrates and loaded with fiber.
Eating leafy greens is a great way to increase the volume of your meals, without increasing the calories.
Numerous studies show that meals and diets with a low energy density make people eat fewer calories overall.
Leafy greens are also incredibly nutritious and very high in many vitamins, antioxidants and minerals, including calcium, which has been shown to aid fat burning.
Fatty fish like salmon is incredibly healthy and very satisfying, keeping you full for many hours with relatively few calories.
Salmon is loaded with high-quality protein, healthy fats and various important nutrients.
Fish — and seafood in general — may also supply a significant amount of iodine.
This nutrient is necessary for proper thyroid function, which is important to keep your metabolism running optimally.
Studies show that a significant number of people don’t fill their iodine needs.
Salmon is also loaded with omega-3 fatty acids, which have been shown to help reduce inflammation, which is known to play a major role in obesity and metabolic disease.
Mackerel, trout, sardines, herring and other types of fatty fish are also excellent.
4. Lean Beef and Chicken Breast
Meat is a weight-loss-friendly food because it’s high in protein.
Protein is by far the most filling nutrient, and eating a high-protein diet can make you burn up to 80–100 more calories per day.
Studies have shown that increasing your protein intake to 25% of daily calories can cut cravings by 60%, reduce your desire for late-night snacking by half and cause weight loss of almost one pound (0.45 kg) per week.
If you’re on a low-carb diet, feel free to eat fatty meats. However, if you’re on a moderate- to high-carbohydrate diet, choosing lean meats may be more appropriate.
5. Boiled Potatoes
White potatoes seem to have fallen out of favor for some reason.
However, they have several properties that make them a perfect food — both for weight loss and optimal health.
They contain an incredibly diverse range of nutrients — a little bit of almost everything you need.
There have even been accounts of people living on nothing but potatoes alone for extended periods of time.
They’re particularly high in potassium, a nutrient that most people don’t get enough of and that plays an important role in blood pressure control.
On a scale called the Satiety Index, which measures how filling different foods are, white, boiled potatoes scored the highest of all the foods tested.
What this means is that by eating white, boiled potatoes, you will naturally feel full and eat less of other foods.
If you allow potatoes to cool for a while after boiling, they will form high amounts of resistant starch, a fiber-like substance that has been shown to have various health benefits, including weight loss.
Sweet potatoes, turnips and other root vegetables are also excellent.
Tuna is another low-calorie, high-protein food.
It’s lean fish, meaning it’s low in fat.
Tuna is popular among bodybuilders and fitness models who’re on a cut, as it’s a great way to increase protein intake while keeping total calories and fat low.
If you’re trying to emphasize protein intake, make sure to choose tuna canned in water, not oil.
7. Beans and Legumes
Some beans and other legumes can be beneficial for weight loss.
This includes lentils, black beans, kidney beans and some others.
These foods tend to be high in protein and fiber, which are two nutrients that have been shown to lead to satiety.
They also tend to contain some resistant starch, like in boiled potatoes aid in weight loss.
Avocado is a unique fruit.
While most fruits are high in carbs, avocados are loaded with healthy fats.
They’re particularly high in monounsaturated oleic acid, the same type of fat found in olive oil.
Despite being mostly fat, avocados also contain a lot of water and fiber, making them less energy-dense than you may think.
What’s more, they’re a perfect addition to vegetable salads, as studies show that their fat content can increase carotenoid antioxidant absorption from vegetables.
To boot, avocaods also contain many important nutrients, including fiber and potassium.
9. Apple Cider Vinegar
Apple cider vinegar is incredibly popular in the natural health community.
It’s often used in condiments like dressings or vinaigrettes, and some people even dilute it in water and drink it.
Several human-based studies suggest that apple cider vinegar can be useful for weight loss.
Taking vinegar at the same time as a high-carb meal can increase feelings of fullness and make people eat 200–275 fewer calories for the rest of the day.
Vinegar has also been shown to reduce blood sugar spikes after meals, which may have various beneficial health effects in the long term.
Despite being high in fat, nuts are not as fattening as you would expect.
They’re an excellent snack, containing balanced amounts of protein, fiber and healthy fats.
Studies have shown that eating nuts can improve metabolic health and even promote weight loss.
What’s more, population studies have shown that people who eat nuts tend to be healthier and leaner than those who don’t.
Just make sure not to go overboard, as they’re still fairly high in calories. If you tend to binge and eat massive amounts of nuts, it may be best to avoid them.
11. Chili Peppers
Eating chili peppers may be useful on a weight loss diet.
They contain capsaicin, a substance which has been shown to reduce appetite and increase fat burning.
This substance is even sold in supplement form and a common ingredient in many commercial weight loss supplements.
One study showed that eating 1 gram of red chili pepper reduced appetite and increased fat burning in people who didn’t regularly eat peppers.
One fruit that deserves to be highlighted is grapefruit. Its effects on weight control have been studied directly.
In a 12-week study in 91 obese individuals, eating half a fresh grapefruit before meals led to weight loss of 3.5 pounds.
The grapefruit group also had reduced insulin resistance, a metabolic abnormality that is implicated in various chronic diseases.
Therefore, eating half a grapefruit about half an hour before some of your daily meals may help you feel more satiated and eat fewer overall calories.
13. Coconut Oil
Not all fats are created equal.
Coconut oil is high in fatty acids of a medium length, called medium-chain triglycerides (MCTs).
These fatty acids have been shown to boost satiety better than other fats and increase the number of calories burned.
What’s more, two studies — one in women and the other in men — showed that coconut oil reduced amounts of belly fat.
Of course, coconut oil still contains calories, so adding it on top of what you’re already eating is a bad idea.
It’s not about adding coconut oil to your diet but about replacing some of your other cooking fats with coconut oil.
14. Full Fat Yogurt
Yogurt is excellent dairy food.
Certain types of yogurt contain probiotic bacteria that can improve the function of your gut.
Having a healthy gut may help protect against inflammation and leptin resistance, which is one of the main hormonal drivers of obesity.
Make sure to choose yogurt with live, active cultures, as other types of yogurt contain virtually no probiotics.
Also, consider choosing full-fat yogurt. Studies show that full-fat dairy — but not low-fat — is associated with a reduced risk of obesity and type 2 diabetes over time.
Low-fat yogurt is usually loaded with sugar, so it’s best to avoid it.
15. Whole Grains
Though cereal grains have received a bad reputation in recent years, some types are definitely healthy.
This includes some whole grains that are loaded with fiber and contain a decent amount of protein.
Notable examples include oats, brown rice and quinoa.
Oats are loaded with beta-glucans, soluble fibers that have been shown to increase satiety and improve metabolic health.
Both brown and white rice can contain significant amounts of resistant starch, particularly if cooked and then allowed to cool afterward.
Keep in mind that refined grains are not a healthy choice, and sometimes foods that have “whole grains” on the label are highly processed junk foods that are both harmful and fattening.
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