Eat More to Lose Weight: How Many Calories You Should Be Eating

Filed under Counting Macros
eat more to lose more weight

In this article, I’ll explain why many people must eat more to lose weight and how many calories you should be eating for weight loss that’s safe and sustainable.

One of the most common comments or concerns of those starting to count macros or flexible dieting is about the amount of calories or macros they are expected to eat.

Here’s one such comment:

I’m 24, 175 cm (5″10), 224 lbs. I am fairly active (I workout 4-5 times a week) and your calculator puts me at 2033 calories a day, 154c, 227p, and 56f. I just think 2033 calories is fairly excessive and I’ve been on diets all my life and have never passed the 1300 calorie range as I am considered overweight.

It can seem really strange to eat so many calories when you’ve been told all your life that the only way to lose weight is to follow a low-calorie diet.

But, for many, eating more is actually the key to losing more. Here’s why.

Why You Must Eat More to Lose Weight

In the above example, this woman was accustomed to eating 1300 calories. She would probably burn about 400 calories at the gym, which would only leave her 900 calories to fuel her bodily processes and general movement on exercise days.

According to our calculator, her sedentary calories are 2218 just to maintain her current weight. Therefore on exercise days, she is putting her body in a 1318 calorie deficit.

Our basic understanding of weight loss principles would say, “wow, she should be at her target weight in no time!” but, the body doesn’t quite work that way, unfortunately.

Your body is a very complex machine and its goal is survival, even at the cellular level.

So what’s the body to do when it needs 2218 calories, but you are only giving it 900?

Starvation Mode

A few days of drastic calorie deficit are fine and cause no changes, but for those that consistently eat at dangerously low calorie amounts the body switches into a conservation state or what some people call starvation mode.1

Our bodies are very clever and we still don’t yet fully understand all of the ways it can survive when placed in stressful situations.

This explains why some people who have been stranded at sea can survive for months on practically nothing. The body begins to slow down the metabolism in an effort to maintain homeostasis in light of a drastic calorie deficit.

Another study explored this phenomenon when looking at long-term data from The Biggest Loser contestants and other weight loss studies. The researchers found that those who lose weight quickly using drastic measures, like very low-calorie dieting, reduce their metabolic rate by as much as 500 calories and the reduction can exist even years after.

A similar thing happens for extreme dieters. The body slows things down, slows the burning of fat, and actually begins to breakdown muscle tissue for energy especially if the dieter is also engaged in weight training.

Don't risk starvation mode by eating too little

Muscle Catabolism

Muscle Catabolism is simply when your muscles are broken down by the body and used as fuel for other parts of your body.

Drastic calorie deficits can cause this as well as not eating enough protein. Your body can break down one muscle group to build and repair the group you just worked out and then vice-versa later in the week when you work out the other muscle group.

One study showed that instead of fat loss occurring and then muscle loss during starvation, they both can happen in parallel to each other.2,3

To prevent this from happening a dieter must eat enough calories and enough protein to prevent this from occurring.4 Dieters want extra energy to come from their fat reserves, not their muscles or they’re defeating the purpose.

Healthy muscle tissue is the key to a healthy metabolic rate. If your muscle tissue is suffering then so will your metabolic rate. Keep that muscle tissue strong by feeding it what it needs to thrive. This isn’t just protein either, your muscles actually run on carbs!

How Many Calories You Should Eat to Lose Weight

There isn’t a generic amount of calories you should eat to lose weight but it’s a unique amount just like you are.

Unless a dieter is morbidly obese and under the direct care of a physician, he/she should never have a calorie deficit of more than 400-500 calories or 20% less than their TDEE calories with the calories burned during exercise factored in.5  

Calculate how many calories your should eat for safe and sustainable weight loss using my calculator.  This takes into account your age, stats, and activity level.

For those that are already pretty lean, but just have 5 pounds to lose, calorie deficits can be even smaller.

So, make sure you are eating enough to support your bodily processes and the growth and activity of your muscles, but not too much that your body won’t burn a small amount of its fat reserves each day to make up for the slight deficit you are in.

It can be really challenging for some dieters to eat more, especially if they have been doing low-calorie diets for a large portion of their lives. It can also be challenging for people to eat the amount of carbs recommended with flexible dieting especially for those that have had “carbs are bad” drilled into their heads for so long.

It’s time to start eating again and come into a better relationship with food. Slow and steady weight loss is the goal with flexible dieting and this, unlike other diets, is sustainable over the long-term because you are able to eat and not feel deprived.

Here’s a comment from someone who started to eat again.

Thank You so much! I’ve been on it for a week. I meet my macros, but having a hard time getting all the calories in, I’m not eating under 1300 anymore but always end up around 1500 at most – it’s not much difference but my body feels great; I recover much better and I am eating more carbs than before but not yet the 205 recommended. I’m still at 60% this week but next week I’ll amp up to a 70%, my body has already started to change.

Manage Expectations: Safe Weight Loss Takes Time!

I also want to express the importance of managing expectations when doing the flexible diet or any diet. Any diet that is telling you that you should lose more than 1-2 pounds per week isn’t healthy or sustainable and is not teaching you how many calories to eat to lose weight safely.

There are many different body types and most people may never be able to achieve the body that has been Photoshopped on the cover of our fashion or fitness magazines.

For women, nature is actually working against the quest for a low body fat percentage. A woman’s hormones are constantly preparing the woman’s body for childbearing and this means a healthy layer of body fat.6 Just look at the body fat percentage differences among men and women.

body fat percentage

So, focus on getting healthier by eating nutritious food, eating enough food, and being more physically fit because usually only those that get paid to look like ultra-ripped athletes actually have the time and resources it takes to look that way.

In closing, I can’t express the importance of working to change your low calorie and low carb mindset and begin eating again. If you want to break free from a slow metabolism and break the weight loss plateau then you have to give your body enough fuel to leave the launch pad.

Bottom line: Eat more to lose weight!

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    Scientific References:

  1. Schwartz, M. W., & Seeley, R. J. (1997). Neuroendocrine responses to starvation and weight loss. New England Journal of Medicine, 336(25), 1802-1811.
  2. Owen, O. E., Smalley, K. J., D’Alessio, D. A., Mozzoli, M. A., & Dawson, E. K. (1998). Protein, fat, and carbohydrate requirements during starvation: anaplerosis and cataplerosis. The American journal of clinical nutrition, 68(1), 12-34.
  3. Chaston TB, Dixon JB, O’Brien PE. Changes in fat-free mass during significant weight loss: a systematic review. International Journal of Obesity (2005). 2007;31(5):743–750.
  4. Tarnopolsky, M. A., MacDougall, J. D., & Atkinson, S. A. (1988). Influence of protein intake and training status on nitrogen balance and lean body mass. Journal of Applied Physiology, 64(1), 187-193.
  5. How to Set a Caloric Deficit for Fat Loss
  6. Price, T. M., O’Brien, S. N., Welter, B. H., George, R., Anandjiwala, J., & Kilgore, M. (1998). Estrogen regulation of adipose tissue lipoprotein lipase—possible mechanism of body fat distribution. American journal of obstetrics and gynecology, 178(1), 101-107.
  7. Lead image:
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Ted Kallmyer is an ISSA certified Specialist in Fitness Nutrition, author, and macros coach. He has helped hundreds of clients reach their body transformation goals.
Updated January 4, 2022


  • Kayla 4 months ago

    Hi Ted.
    I weigh 170lbs, 5 3” , i weight lift 5x a week, and eat 1700-1900 calories, I eat healthy, juicing with meals, I count my macros but I’m no longer losing weight I have readjusted my macros many times, but I wanna know am I not eating enough? Yesterday I did a lower body leg day for hour and half and ate a surplus of calories to my calories burned in the day logged by my tracker on my watch and my fitness pal (3000) and I woke up lighter today the. I have in weeks? What am I doing wrong ? I can’t get below 170

    • Kayla 4 months ago

      Also if helps I’m 29 year old female

    • Ted Kallmyer (Certified Macro Coach) 4 months ago

      Hi Kayla, I definitely think your calories and macros aren’t at the right spot but you aren’t eating at levels that would slow your metabolic rate. This is when people eat below their BMR for an extended period of time. I’d love to help you and get things moving again either through coaching or my Macro Solution options.

  • Angel 8 months ago

    Idk how to lose weight. I have lived on practically no food (loss of appetite due to medical problems) for YEARS and now I am eating healthier. I told my doctor I am eating healthier, actually hungry at times now…and my weight has gone up even more! She asked me to start keeping a food journal. I realized my eating healthier (and much more than I used to) I’m still at less than 1000 calories daily. Not sure how to get to the right number. Before she said I needed to eat more to lose weight, that I was in starvation mode. Now I’m eating more and heavier than I’ve ever been. So upsetting

    • Ted Kallmyer (Certified Macro Coach) 8 months ago

      Hi Angel, Since you spent years undereating, it will take time to get your metabolism back to where it should be and you may gain a little while this process is happening. Are you doing anything for exercise? Some strength training can speed up this process since it stimulates muscle tissue. Just start slow and work your way up. You can do this and your doctor is right, it is the only forward to better health.

  • Tina 10 months ago

    Hello Ted, Great Article !
    First i will like to share my specs

    Age: 28
    Height: 5ft1 (158cm)
    Weight: 60kg
    My maintenance calories :1960 (katch-macardle formula)
    Body Fat %: 32%
    Muscle mass : 38.2kg
    Activity level : Active (3~5 days weight lifting & 10K steps/daily)

    I just recently came across this concept of reverse dieting and slow metabolism, the reason why only recently is because i got frustrated seeing no difference on my scale (weight, fat body %) while iam active and eat healthy,and that made me curious as to something must be wrong here. I even considered checking my thyroid just in case. So when i came across this aspect “starvation ” it flashed a light because i indeed under ate for the longest i can remember. Due to many online calculator and misconceptions that i should eat 1200~or less kcal to maintain my body weight or lose it. So basically the majority of my life i have been eating 1200~and less(of course i have some overeating days). I just now started learning about TDEE and macros and everything is very overwhelming, since basically i am almost overweight but i look small.
    I really want to go to a normal range of body fat 25% or less, is the approach i am taking now the right one? Meaning i am slowly trying to increase my daily calories to at least 1500 calories daily while i am keeping the weight training to 3~5 days per week.
    I never would have though that eating more might actually help

    Any feedback will be very much appreciated

    • Ted Kallmyer (Certified Macro Coach) 10 months ago

      Hi Tina, Yay! I’m so glad you’re on a healthier path! I think that sounds like a good approach. My only suggestion is to vary your nutrition based on how much energy your body needs. For example, your body needs more on your weight training days than it does on your rest days, so you should be eating more on these days and less on days you’re more sedenatry.

      One other thing, Katch-McArdle is good for those who have a high muscle to body weight ratio but not for those that have a higher body fat percentage. You may want to see what the Mifflin, M. D., St Jeor recommends. This is what my calculator uses as a default.