Counting calories: Get back to weight-loss basics (2024)

Counting calories: Get back to weight-loss basics

Weight control really boils down to one thing — calories. See what steps you can take to win the calorie battle.

By Mayo Clinic Staff

Even with all the diet plans out there, weight management still comes down to the calories you take in versus those you burn off during activity.

Popular fad diets may promise you that not eating carbohydrates (carbs) or eating a pile of grapefruit is the secret to weight loss. But it really comes down to eating fewer calories than your body is using if you want to lose weight.

Calories: Fuel for your body

Calories are the energy in food. Your body has a constant demand for energy and uses the calories from food to keep working. Energy from calories fuels your every action, from fidgeting to marathon running.

Carbohydrates, fats and proteins are the types of nutrients that have calories and are the main energy sources for your body. No matter where they come from, the calories you eat are either converted to physical energy or stored within your body as fat.

These stored calories will stay in your body as fat unless you use them up. You can do this by cutting how many calories you take in so that your body must draw on reserves for energy. Or you can add more physical activity so that you burn more calories.

Tipping the scale

Your weight is a balancing act, but the equation is simple. If you eat more calories than you burn, you gain weight. And if you eat fewer calories and burn more calories through physical activity, you lose weight.

In the past, research found about 3,500 calories of energy equaled about 1 pound (0.45 kilogram) of fat. So researchers thought burning or cutting 500 calories a day led to losing 1 pound a week. But this isn't true for everyone.

In general, if you cut about 500 calories a day from your usual diet, you may lose about ½ to 1 pound a week. But this can vary depending on your body, how much weight you want to lose, your gender and activity level.

It sounds simple. But it's more difficult because when you lose weight, you usually lose a mix of fat, lean tissue and water. Also, because of changes that occur in the body as a cause of weight loss, you may need to decrease calories more to keep losing weight.

Cutting calories

Cutting calories needs to include change, but it doesn't have to be hard. These changes can have a big impact on the number of calories you take in:

  • Skipping high-calorie, low-nutrition items
  • Swapping high-calorie foods for lower calorie choices
  • Cutting portion sizes

Saving calories by cutting high-calorie, low-nutrition items

Skipping one or two high-calorie items is a good place to start when cutting calories. For example, you could skip your morning latte, soda at lunch or that evening bowl of ice cream.

Think about what you eat and drink each day and find items you could cut out. If you think that skipping your treat will leave you with a craving, swap it with a low-calorie choice.

Healthier choices
Instead of this... Calories* Try this... Calories*
*Actual calories may vary by brand.
Flavored latte, 16 ounces 268 Black coffee, 16 ounces 5
Chocolate ice cream, 1 cup 292 Strawberries, 1 1/2 cups whole 69
Lemon-lime soda, 16 ounces 210 Sparkling water, 16 ounces 0

Swapping high-calorie foods for lower calorie choices

Simple swaps can make a big difference when it comes to cutting calories. For example, you can save 60 calories a glass by drinking fat-free milk instead of whole milk. Instead of having a second slice of pizza, reach for some fresh fruit. Or snack on air-popped popcorn instead of chips. Eat more fruits and vegetables, which have many nutrients and are high in fiber. And they'll fill you up more than high-fat choices.

Lower calorie choices
Instead of this... Calories* Try this... Calories*
*Actual calories may vary by brand.
Whole milk, 8 ounces 149 Skim milk, 8 ounces 91
Regular-crust pepperoni pizza, fast food, 2 slices (each slice equals 1/8 of a 14-inch restaurant pizza) 626 Regular-crust pepperoni pizza, fast food, 1 slice (1/8 of a 14-inch restaurant pizza), plus 2 cups grapes 437
Ranch-flavored tortilla chips, 1 snack bag (3 ounces) 426 3 1/2 cups popcorn, air-popped 109

Cutting your portion sizes

The sizes of your portions affect how many calories you're getting. Twice the amount of food can sometimes mean twice the number of calories. But some foods with fewer calories, such as many fruits and vegetables, can be eaten in larger portions.

It's common to guess that you eat less than you actually do, such as if you're dining out. Paying attention to your portions is a good way to control calories.

Portion sizes
A typical portion... Calories* A standard serving... Calories*
*Actual calories may vary by brand.
Orange juice, 8 ounces 112 Orange juice, 4 ounces 56
Buttermilk pancake, 6-inch diameter (77 grams) 175 Buttermilk pancake, 4-inch diameter (41 grams) 86
Whole-grain noodles, cooked, 1 1/2 cups 355 Whole-grain noodles, cooked, 1 cup 237

Try these tips to control portion sizes and cut calories:

  • Start small. At the start of a meal, take a little less than what you think you'll eat. If you're still hungry, eat more vegetables or fruit.
  • Eat from plates, not packages. Eating right from a container gives you no sense of how much you're eating. Seeing food on a plate or in a bowl keeps you aware of how much you're eating. Think about using a smaller plate or bowl.
  • Check food labels. Be sure to check the Nutrition Facts panel for the serving size and number of calories per serving. You may find that the small bag of chips you eat with lunch every day, for example, is two servings, not one. This means it's twice the calories you thought.
  • Use a calorie counter. Check out reputable resources that offer tools to count calories, such as websites or smartphone applications.

Putting it all together

Replacing high-calorie foods with lower calorie choices and cutting your portion sizes can help you cut calories and improve weight control. For a successful — and lasting — weight management plan, you also need to increase your physical activity. Combining regular activity and healthy eating will best help you get to and maintain a healthy weight.

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Jan. 18, 2023

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  5. Keep the focus on your long-term vision
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  7. BMI and waist circumference calculator
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  10. Weight-loss strategies
  11. Weight Loss After Breast Cancer

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Counting calories: Get back to weight-loss basics (2024)

FAQs

What is the best way to count calories to lose weight? ›

One approach is to add up the number of calories per serving of all the foods that you eat, and then plan your menus accordingly. The nutrition labels on all packaged foods and beverages provide calories per serving information.

Is counting calories enough for weight loss? ›

By now, we've established that calorie counting is far from the best way to lose weight. There's also growing evidence that for some people, it may increase the risk of disordered eating.

How many calories should I cut back to lose weight? ›

In general, if you cut about 500 calories a day from your usual diet, you may lose about ½ to 1 pound a week. But this can vary depending on your body, how much weight you want to lose, your gender and activity level. It sounds simple.

How many calories should I eat to lose 2 pounds a week? ›

Generally to lose 1 to 2 pounds a week, you need to burn 500 to 1,000 calories more than you consume each day, through a lower calorie diet and regular physical activity. Depending on your weight, 5% of your current weight may be a realistic goal, at least for an initial goal.

What happens if I only eat 500 calories a day for a month? ›

Danger of deficiencies

The greatest dangers associated with a 500-calorie diet relate to vitamin and mineral deficiencies. Vitamin and mineral deficiencies can lead to many health problems. In fact, most people cannot meet their vitamin and mineral requirements if they eat less than 1200 calories per day.

What are three diets experts say to avoid? ›

The worst diets for your health include raw food, low-carb plans, and weight-loss shakes, according to experts
  • The raw food diet was ranked the worst way to eat overall for the second year in a row.
  • Other diets deemed unhealthy include the low-carb Dukan diet, and plans like Slimfast and Herbalife.
Jan 3, 2024

What is the ideal calorie count to lose weight? ›

1 pound, or approximately 0.45 kg, equates to about 3,500 calories. As such, in order to lose 1 pound per week, it is recommended that 500 calories be shaved off the estimate of calories necessary for weight maintenance per day.

Why am I not losing weight counting calories? ›

Your calorie deficit is imbalanced

This might mean you're not eating enough to have energy in your everyday life or you're eating too many calories for weight loss to occur.

What exercise burns the most calories? ›

According to Healthline, running burns the most calories. A tried and true exercise that requires little more than your legs and the open road, running burns just over 800 calories for a 155-pound adult per hour.

Can I lose noticeable weight in 2 weeks? ›

The amount of weight that can be safely lost in two weeks varies from person to person. However, a common recommendation is 1-2 pounds per week. This means you could potentially lose up to 4 pounds in two weeks in a healthy and sustainable way.

What is the minimum calories per day for weight loss? ›

A good rule of thumb for healthy weight loss is a deficit of about 500 calories per day. That should put you on course to lose about 1 pound per week. This is based on a starting point of at least 1,200 to 1,500 calories a day for women and 1,500 to 1,800 calories a day for men.

How to lose 5 lbs in a week? ›

Losing 5 pounds a week comes to reducing your food intake by 3500 calories over seven days. The value that represents the decrease in calorie intake is known as the calorie deficit. If you want to lose 5 pounds in a week, you will need to reduce your food intake by 17,500 calories, which is a huge calorie deficit.

What is the most extreme diet to lose weight? ›

10 Extreme Weight Loss Methods from History
  • Cigarette Diet. In the 1920s, doctors prescribed the cigarette diet to curb hunger while trying to lose weight. ...
  • Chewing Diet. ...
  • Avoiding Swamps Diet. ...
  • Cotton Ball Diet. ...
  • Drinking Man's Diet. ...
  • Graham Diet. ...
  • Slimming Soaps Diet. ...
  • Tapeworm Diet.
Jan 23, 2023

How to calculate how many calories to eat to lose weight? ›

Katch-McArdle Formula:

1 pound, or approximately 0.45 kg, equates to about 3,500 calories. As such, in order to lose 1 pound per week, it is recommended that 500 calories be shaved off the estimate of calories necessary for weight maintenance per day.

How many calories should I eat to lose weight according to my weight? ›

The general rule of thumb, if you want to lose weight, is to eat 500 fewer calories per day to lose approximately one pound/half a kilogram per week. Losing weight is a slow, sustainable manner will help you to lose fat while preserving muscle mass.

What is the most accurate way to calculate calories needed? ›

A fairly accurate way to calculate your daily calorie needs is to determine basal metabolic rate (BMR) using multiple factors, including height, weight, age and gender, then multiply the BMR by an activity factor to determine your total daily energy expenditure (calories).

What is the most accurate calorie calculator for fat loss? ›

Research has found the Mifflin St. Jeor formula to be more accurate than similar calorie estimation methods such as the Harris-Benedict formula. You should use this calorie calculator in all circ*mstances except when: You're following the book The Leangains Method. You're on a ketogenic diet.

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