One of the most common questions I get as a personal fitness coach is about dietary macros and how many carbs people should eat to lose weight.
Everyone’s metabolism is different, and age, gender, and activity levels all have an influence on weight loss. But carb intake seems to be one area where most people can make a big difference.
So, to find out whether there’s a good guideline on crabs, I got together with my dietitian and a nutritionist to research literature on low-carb diet plans for weight loss.
Here’s what I found.
Quick Summary
- Most people have a carbohydrate intake that is much too high, even when they stick to a low-calorie diet.
- To effectively lose weight, you have to make sure that you limit your carb consumption.
- It’s also important to understand the difference between simple and complex carbohydrates and how they impact your blood sugar.
How Many Carbs Should You Eat To Lose Weight?

You should eat less than 150 grams of carbs to lose weight on a consistent basis. This is based on an average calorie intake of about 2,000 calories [1].
This would generally be classed as quite a low level of carb intake, but even eating less than 200 grams of carbs a day would be less than the majority of people consume.
At the more extreme end of low-carb weight-loss dieting is the ketogenic diet, which instructs people to consume less than 50 grams of carbs a day to trigger ketosis.
Low carb diets have gained popularity due to their potential to aid weight loss by limiting carbohydrate intake. These diets typically focus on reducing the consumption of high-carb foods, such as grains, sugar, and starchy vegetables.
While they may differ in their specific carb limits, both the ketogenic diet and other low carb diets emphasize the importance of minimizing carb intake for achieving weight loss goals. More on this shortly.
More on this shortly.
“If you eat somewhere between 100-150 grams of carbs, you’re way lower than average, and your body is quickly burning through its liver carb stores. If you eat extra protein, that can provide a buffer to replenish these stores.”
- Kamal Patel, Co-founder & Editor at Examine.com

Why Is Eating Fewer Carbs Important?
Eating fewer carbs is important for weight loss because a lot of carbs are easily digested and broken down into sugar. That sugar then enters the bloodstream quickly and can lead to sudden blood sugar spikes [2].
What happens next is that a lot of damage is done to weight management.
As your glucose levels spike, your pancreas releases insulin in order to deal with the excess amounts. And most excess energy gets stored in the form of fat [3].
Basically, the more carbs you consume, the more your blood sugar fluctuates. And if that energy spike doesn't get consumed by physical activity, then you have a much higher chance of weight gain.
A low-carb diet works by replacing some of your carb intake with healthy fats and protein. Because your body digests fat and protein far slower than carbs, this helps to keep your blood glucose levels stable [4].
To attain the best weight loss outcomes, you should also keep track of the carbs you consume.
Furthermore, a low carb diet and a low fat diet are two common weight loss strategies. While both offer advantages, a low carb diet emphasizes carbohydrate restriction to increase fat-burning and weight loss.
By substituting carbs with healthy fats and protein, blood sugar levels in the body remain steady, resulting in more efficient weight management.
Types Of Carbohydrates

Just reducing your total daily carb intake to lose weight could still be an issue because not all carbs are created equally.
Complex Carbs
Complex carbs are made up of long sugar molecules that form complex chains. And these chains take a while for your stomach and metabolism to break down [5].
You’ll typically find these complex carbs in starchy vegetables and whole grains that haven't been processed. Think of vegetables like yams or squash, and these good carbs do have a place in a healthy weight loss.
I’ll get to some low-carb diet examples shortly, but you should try to limit your carbohydrate intake to these complex types.
Simple Carbs
Simple carbohydrates occur naturally in some types of food, but you’ll mostly find them as refined carbs in processed food [6]. Think of things like fruit and dairy products as natural sources of simple carbs.
While anything with added sugar, like sodas and candy bars, would be a source of refined carbohydrates. And these are the ones you should absolutely avoid on a low-carb diet.
If at all possible, aim to limit how many calories you get from these carb sources to an absolute minimum.
What Do Low-Carb Diets Look Like?

Typical low-carb diets essentially involve low-carb eating with an increase in fat and protein consumption. It all comes down to how many grams of protein you consume.
Less Than 200 Grams Of Carbohydrates
Two hundred grams per day would be lower than general dietary guidelines [7]. And if you get less than 20 grams from complex carbs, then this should translate into a good impact on body fat.
I find this is a good starting point for people, and it won’t be overly challenging to adjust your healthy diet.
100 To 150 Grams Of Carbohydrates
This is where I feel you start making a more targeted effort of a low-carbohydrate diet, and it’s about half the daily dietary guidelines mentioned above.
I would also suggest that you get less than 10 grams per day from simple and refined carbohydrates. You’ll need to replace all your pasta, white rice, and typical breakfast cereals with whole grains and raw vegetables.
Less Than 50 Grams Of Carbohydrates
This is where you’re getting into the range for the keto diet with less than 50 grams of carbs per day [8]. This is where your metabolism switches from creating blood glucose to ketones by processing dietary and body fat.
It’s possible to achieve rapid weight loss with low carb consumption, but it can be quite a struggle to maintain such a diet.
3 Tips For Cutting Back

Here are three tips for trying to lose weight with low carbohydrate diets and incorporating aspects of a low-fat diet.
1. Set An Achievable Goal
If you’re new to low-carb diets and you’re currently still eating a large volume of carbs, then don’t jump straight into keto.
Taking such drastic actions can increase your chances of failure because the transition is so significant.
Instead, start to cut carbs gradually and focus on eliminating the refined type of carbs.
2. Remove All Processed Foods

You’ll be surprised how easily you can eliminate a lot of carbs by removing processed foods and sugary treats.
Getting to 150 grams of carbs a day to lose weight is so much easier when you stop eating that candy bar that contains 40 grams of sugar.
And if you tend to eat carbs as snacks, then switch to nuts and seeds to help you feel full and avoid hunger cravings [9].
3. Track Your Intake
And finally, don’t guess how many carbs you’re eating. You have to keep track of all your macronutrient intake, and the easiest way to do that is the Noom application.
It will allow you to enter your daily meals and will then calculate macros and calories.
At the end of each day, you’ll see exactly how many calories came from what sources. With that information, you can then make some adjustments.
Get Your Macros And Supplements Aligned

To create an effective weight loss strategy, I also recommend that my clients and reader take a close look at aligning dietary macros with the right supplement stack.
First of all, when you’re trying to lose weight, you can achieve faster results by adding more protein to your balanced diet [10].
Eating more protein a day to lose weight can become a challenge, though. But with a simple whey protein shake, you’ll easily get a tasty boost.
Low carb diets and low fat diet are also worth considering in your weight loss journey. By reducing both carb and fat intake, you can create a calorie deficit that promotes fat loss while maintaining a balanced diet.
You should also consider how metabolic boosters can supplement your weight loss diet.
These typically include thermogenic ingredients that have a unique impact on your metabolism [11].
Basically, your body slightly raises its core temperature, and it uses energy stored in fat and blood glucose to fuel that increase.
So, between eating fewer calories and burning off more energy, you can get to your ideal weight considerably faster.
FAQs
Do All Carbs Make You Gain Weight?
No, not all carbs make you gain weight. It’s mainly due to simple sugars and carbs and an excessive calorie intake that can lead to belly fat and ultimately obesity.
Can You Eat Too Few Carbs?
Yes, you can eat too few carbs. Even on extreme restriction diets like keto, you should still eat some carbs each day to maintain healthy glucose levels.
Align Your Carbs With Your Weight Loss Goals
You don’t have to resort to extreme low-carb diets in order to lose weight more effectively. But it’s important to understand that how many carbs and what type of carbs you eat will have a significant impact on your body composition.
Start reducing your carbs today, and if you want to see a faster reduction in fat reserves, then consider adding the next fat burners to your supplement stack.
These can slightly boost your metabolic rate to burn off more calories and fat. And over the weeks and months ahead, those small amounts will add up to quite a few pounds.
References:
- https://examine.com/nutrition/does-low-carb-have-an-official-definition/
- https://www.hsph.harvard.edu/nutritionsource/carbohydrates/carbohydrates-and-blood-sugar/
- https://www.endocrineweb.com/conditions/diabetes/normal-regulation-blood-glucose
- https://healthyeating.sfgate.com/foods-longer-digest-others-11622.html
- https://medlineplus.gov/ency/imagepages/19529.htm
- https://medlineplus.gov/ency/imagepages/19534.htm
- https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/carbohydrates/art-20045705
- https://www.hsph.harvard.edu/nutritionsource/healthy-weight/diet-reviews/ketogenic-diet
- https://academic.oup.com/ajcn/article/100/suppl_1/412S/4576547
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7539343/
- https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/thermogenesis
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