Carbs vs Calories: Which Should You Count for Weight Loss?

Understanding carbs vs calories can help you make informed dietary choices for weight loss. Learn what research says about monitoring your intake.

Carbs vs calories
by
Chelsea Rae Bourgeois, MS, RD
— Signos
Health writer
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Updated by

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Science-based and reviewed

Updated:
Published:
December 3, 2024
November 18, 2024

Table of Contents

Obesity has been linked to an increased risk of chronic diseases like diabetes and heart disease, leading to an interest in various weight loss strategies. Low-calorie, low-carb, and low-fat diets have been researched extensively, but what’s the best way to lose weight?1

Calorie counting is a widespread weight loss tactic emphasizing consuming fewer calories than you burn. However, not all calories are created equal, so it’s crucial to understand the different macronutrients and their role in weight management. For example, while calories measure the amount of energy in food, carbohydrates serve as the primary energy source in the body.

Still, following a low-calorie diet does not necessarily translate to a low-carbohydrate diet, and a low-carb diet isn’t appropriate for everyone. Enter carbohydrate counting. Understanding the distinctions between carbs vs. calories is essential for sustainable weight loss and blood sugar control.

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What Are Carbs? A Recap

Carbohydrates and fruit

Carbohydrates are often scrutinized in today’s world, but they’re an essential part of a healthy diet and well-balanced lifestyle. Carbs, alongside protein and fat, are macronutrients necessary for overall health and wellness. Made up of fiber, sugar, and starches, they serve as the body’s primary energy source. Carbohydrates are essential for brain function, muscle contraction, digestion, immune response, and so much more.2

When you eat carbohydrates, your digestive system breaks them down into glucose molecules, which are then absorbed into the bloodstream and directed to your cells for energy use. Insufficient carb intake may negatively affect your energy levels, and excess glucose can be converted to body fat. Balance is key.

There are two main types of carbohydrates: simple and complex carbohydrates. Simple or refined carbs consist of one or two sugar molecules and are easy to digest and quickly absorbed in the body. Simple carbs are typically found in foods like fruit, honey, and dairy products. 

Complex carbs, on the other hand, are made of longer chains of sugar molecules. They’re typically found in foods like whole grains, starchy vegetables, and legumes. The body digests complex carbs more slowly, meaning they’re more likely to provide sustained energy.

What Are Calories?

Calories are a unit of measurement used to determine the amount of energy found in different foods and beverages. There are two main categories for calories: those derived from macronutrients and those found in alcohol. Each macronutrient provides a set number of calories per gram. Carbs and proteins provide four calories per gram, while fat and alcohol provide nine calories per gram.

Calories are a unit of measurement used to quantify the energy in food and beverages, essentially representing the amount of energy your body derives from consuming these items. This energy is essential for various bodily functions, including metabolism, physical activity, and maintaining body temperature.

Consuming more calories than your body uses may lead to weight gain, but burning more calories may result in weight loss. Understanding how a food’s nutritional value compares to its calories may help you manage your calorie intake and maintain a healthy weight. 

Nutrient-dense foods provide essential vitamins and minerals, while many processed foods are thought to contain “empty calories” because they don’t contain many micronutrients. Daily calorie needs vary between individuals and should account for physical activity, medical history, and health goals. A registered dietitian can offer medical advice and help determine your daily calorie needs.

What Is the Difference Between Carbs and Calories?

While carbohydrates and calories are fundamentally related, both have distinct nutrition concepts that set them apart. Calories are a measurement used to determine the amount of energy in food. This energy comes from a combination of all three macronutrients, each providing a certain number of calories per gram.

Understanding the macronutrient ratio and its impact on total calories can help you know the nutritional value of what you’re eating. Carbs, whether simple or complex, provide four calories per gram. Your carbohydrate intake will not only play a role in your blood sugar levels but also contribute to your overall calorie intake.3

<div class="pro-tip"><strong>Also Read: </strong><a href=why-do-we-need-carbohydrates>Why Do We Need Carbohydrates: Optimal Choices for Health</a></a>.</div>

Counting Calories vs Carbs: Pros and Cons

Regarding weight loss, counting calories and counting carbs are two popular methods for tracking dietary intake. Each approach has advantages and disadvantages, depending on your health goals, lifestyle, and eating preferences. Let’s explore the pros and cons of each:

Counting Calories

Tracking your calorie intake comes with some ups and downs:

Pros

  1. Flexibility: Counting calories allows for a wide variety of foods. If you are only tracking your overall calorie intake, you can technically eat anything as long as it fits within your daily calorie limit.
  2. Extensive Research: While there’s no one-size-fits-all way to lose weight, a substantial amount of evidence-based research supports the effectiveness of counting calories in versus out.1
  3. Comprehensive Tracking: Counting calories can provide a picture of your overall diet, accounting for all macronutrients. Beyond counting the total number of calories consumed, you can also calculate how many calories come from fat versus protein versus carbs.

Cons

  1. Time-consuming: Counting calories can require meticulous tracking. You must diligently read food labels and portion out your serving sizes accordingly. All of this can be time-consuming and challenging to maintain long-term.
  2. Not Appropriate for Everyone: The demands of calorie counting may increase the risk of developing unhealthy eating patterns, especially for those with a history of eating disorders.5
  3. Variable Needs: Individual calorie needs vary between individuals, depending on medical history, physical activity, and health goals.
  4. Quality Versus Quantity: Counting calories doesn’t always account for the nutritional value of foods. For example, a 100-calorie cookie does not offer the same nutrients as 100 calories from fruits and veggies.

Counting Carbs

Counting carbs is common practice for many with type 2 diabetes, but some rely on it in their weight loss efforts. Still, it’s essential to consider the pros and cons.

Pros

  1. Focused Approach: Some people find it easier to track carbohydrates than counting calories. Tracking your carb intake can help you narrow down your lifestyle changes and adjust your eating patterns more efficiently.
  2. Encourages Whole Foods: Counting carbs promotes whole, unprocessed foods, which are typically lower in carbs. For example, approximately 98% of Americans fall short of the recommended whole grain intake. When tracking your carb intake, you may be more inclined to eat foods like quinoa instead of white rice or whole-grain bread instead of white bread for increased fiber.2
  3. Supports Blood Sugar Control: Monitoring carbohydrate consumption can help regulate blood glucose levels. Counting carbs can help you understand how your body responds to certain foods and adjust accordingly to your health goals.6

Cons

  1. May Limit Food Variety: While counting carbs tends to promote whole foods, it may limit certain food groups. If you limit your meals to a set amount of carbs, you may be forced to forgo certain foods, which may lead to nutrient deficiencies over time.
  2. Easy to Misinterpret: Counting carbs focuses on the grams of carbs per serving, making it easy to neglect the importance of fiber and other nutrients.
  3. Not Appropriate for Everyone: Counting carbohydrates may not suit everyone, especially those with higher energy demands. It may also overemphasize one macronutrient, triggering disordered eating patterns in some.4

Sustainable weight loss requires a holistic approach that includes a well-balanced diet. A registered dietitian nutritionist can help you establish nutrition goals, including a recommended amount of calories and carbohydrates per day. If counting calories or carbs enables you to monitor your progress with those health goals, it’s important to do it safely.

How to Balance Carbs and Calories for Weight Loss

A basket of cookies

Carbs and calories are essential for everyday life and overall health. And while weight loss may require some dietary changes, balance is key. Nutrition needs are highly individualized and depend on factors such as age, gender, health goals, medical history, and activity level.

It’s crucial to establish nutrition goals under the guidance of a healthcare professional, such as your registered dietitian or doctor. Once you have a target calorie goal for weight loss, you can allocate the appropriate portion of those calories to carbohydrates. Many people divide their calorie intake into percentages for each macronutrient. Still, there’s no one-size-fits-all macronutrient ratio for weight loss, so it’s best to discuss your needs with your healthcare team.

Here are a few considerations regarding carbs vs calories for weight loss:

  • Just Because You Can Doesn’t Mean You Have To: While tracking your dietary intake can support weight loss efforts, you don’t have to count anything. Prioritizing whole foods and eating a variety of nutrient-dense foods can promote satiety, support lean muscle tissue, and maintain energy levels.
  • Carbs Are Essential: Thanks to various fad diets like the keto diet, high-carb foods have earned a bad rap over the years. However, carbs are necessary for life and overall health. When trying to maximize the nutritional value of your diet, focus on the quality of your carbs rather than just the quantity. Prioritize complex carbs like whole grains, fruits, and legumes to get a hefty dose of fiber, vitamins, and minerals.
  • More Than Anything, Balance Is Key: Low-carb diets can support weight loss, but they’re not always sustainable. Prioritize a healthy diet of lean proteins, healthy fats, and complex carbohydrates.
  • Look At the Big Picture: Sustainable weight loss requires a holistic approach that involves stress management, sleep, physical activity, and diet. What works for one person may not always work for another. Some people appreciate counting calories or carbs, but if the pros don’t outweigh the cons, it’s okay to rely on other methods.

The best way to lose weight will vary between individuals, so it's important to listen to your body and give yourself grace throughout the journey. Include nutrient-rich whole foods like fresh fruits, veggies, whole grains, and healthy fats like olive oil. Monitor your weight loss and its effects on various health markers, such as high blood pressure and cholesterol levels. Adjust your weight management efforts as needed and seek guidance from trusted healthcare providers.

<div class="pro-tip"><strong>Learn More: </strong><a href=high-calorie-foodst>10 High-Calorie Foods That Are Actually Good for You</a>.</div>

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References

  1. Kim JY. Optimal Diet Strategies for Weight Loss and Weight Loss Maintenance. J Obes Metab Syndr. 2021;30(1):20-31. doi:10.7570/jomes20065
  2. Clemente-Suárez VJ, Mielgo-Ayuso J, Martín-Rodríguez A, Ramos-Campo DJ, Redondo-Flórez L, Tornero-Aguilera JF. The Burden of Carbohydrates in Health and Disease. Nutrients. 2022;14(18):3809. Published 2022 Sep 15. doi:10.3390/nu14183809
  3. Benton D, Young HA. Reducing Calorie Intake May Not Help You Lose Body Weight. Perspect Psychol Sci. 2017;12(5):703-714. doi:10.1177/1745691617690878 
  4. Colombarolli MS, de Oliveira J, Cordás TA. Craving for carbs: food craving and disordered eating in low-carb dieters and its association with intermittent fasting. Eat Weight Disord. 2022;27(8):3109-3117. doi:10.1007/s40519-022-01437-z
  5. Messer M, McClure Z, Norton B, Smart M, Linardon J. Using an app to count calories: Motives, perceptions, and connections to thinness- and muscularity-oriented disordered eating. Eat Behav. 2021;43:101568. doi:10.1016/j.eatbeh.2021.101568
  6. H Ibrahim SM, Shahat EA, Amer LA, Aljohani AK. The Impact of Using Carbohydrate Counting on Managing Diabetic Patients: A Review. Cureus. 2023;15(11):e48998. Published 2023 Nov 18. doi:10.7759/cureus.48998

About the author

Chelsea Rae Bourgeois is a registered dietitian nutritionist with several years of experience working in the clinical setting. Once a track and field athlete on a competitive stage, she now finds joy in combining her passions as a health writer to help people embrace their wellness through nutrition and fitness.

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Please note: The Signos team is committed to sharing insightful and actionable health articles that are backed by scientific research, supported by expert reviews, and vetted by experienced health editors. The Signos blog is not intended to diagnose, treat, cure or prevent any disease. If you have or suspect you have a medical problem, promptly contact your professional healthcare provider. Read more about our editorial process and content philosophy here.

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