WHY 1200 IS NOT THE RIGHT NUMBER

1200 Calories

Today’s post is a topic I’ve wanted to write about for quite a while.  I’ve written several times about the pros and cons of calorie counting, but I’ve never addressed or shared my thoughts regarding the real problem with the practice of calorie counting.  Most of you have noticed that I still include calorie and nutrition facts on most of my recipes.  That is because it’s good  to have an idea of how that meal fits into your day and what macronutrients (carbs, fats or protein) it supplies. I know that many of you are working on developing healthy habits, but also utilize the information in a positive way.

The real problem is the ridiculously low number promoted by calorie counting websites and phone apps.

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Let me start at the beginning.  As a college Junior, I had gained 25 pounds but hadn’t lost any of my confidence until one day, I saw myself on TV.  Mr. Hungry and I got to sit court-side at a Wildcats basketball game and we were caught on the kiss cam.  When we came home, Mr. Hungry had recorded it and brought it up on the TV for us to relive.  I took one look at myself and realized I was not okay with the weight I had gained.  The next morning, my bathroom scale quietly acknowledged my realization. Now, what?  I knew a very petite friend of mine “counted her calories” but that seemed time-consuming.  So I searched for an online calorie counter, of course, to my delight there were hundreds of options.

Like most people who sign up for an online calorie counter, I filled out the current and goal profiles.  When it said,”by when would you like to accomplish your goal?” I put the soonest date it would allow without causing an error screen.  Then it spit out a calorie number that would help me achieve that goal: 1200 per day.

Let me stop right there and say that since I had never counted calories before, that number had zero meaning to me.  I blindly began down a path that would produce quick results with long lasting consequences.

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100 calorie yogurt

IT’S ALL ABOUT BMR

Your BMR is your basal metabolic rate or the energy you utilize to stay alive.  It does not include movement or activity level, it is a number of calories your body requires to continue to support bodily functions such as breathing, heart beating, etc.  There are a number of things that affect a person’s BMR including:

  • Body composition – muscle requires more energy to maintain than fat
  • Gender – men burn more, usually related to muscle mass
  • Age – BMR decreases 0-3% on average for every decade
  • Climate and body temperature – takes energy to keep the body cool in extreme heat and energy to keep the body warm in extreme cold.
  • Hormonal levels: Thyroid hormones, sex hormones, and adrenal hormones all play a role in determining your BMR
  • Health: severe fever, illness, and burns can increase the basal metabolic rate

If you search for a BMR calculator you will get hundreds of different of options to utilize.  I recently did this and as I suspected my results varied wildly from website to website:

  • Website 1: 1,399
  • Website 2: 1501
  • Website 3: 1338

This is likely because these sites are using different formulas such as Mifflin St. Jeor, Harris-Benedict or the Hamwi Method to estimate calories levels.  One thing they share in common?  None of them say 1200 or less.  So what happens when a person eats less than their bodies natural basal metabolic rate? Initially,  you lose weight.  However, the body is a complex and highly efficient organism.  After a prolonged period, it will begin to adjust, it will become more efficient on fewer calories.  What we don’t know is how long the period is until the body starts to readjust.  We also don’t know if the effects are permanent.  A recent and now famous study of biggest loser contestants found their BMR’s to be 200-500 calories lower than expected for someone of their size 6 years after the competition had ended.  NY times article and original study.

There are several other, potentially more accurate ways to check your BMR which may be very helpful to you if you suspect your metabolism has slowed.  When I worked at Life Time we had a bioelectrical impedance analyzer (BIA)  that estimated BMR based off of height, weight, age, and lean body mass.  Finding access to a BIA or even a bod pod can be challenging, but worth it for the information.  However, this is again, just an estimate based on what someone with that body composition should be burning, not what you are actually burning.

RMR Test-Kelli 2448x3264

For information specific to you, you may want to get a direct measurement using indirect calorimetry.  In the picture above, that is the testing I’m doing, at Life Time this is available as a Resting Metabolic Assessment.  I thought that my BMR was right on par where it was supposed to be when I initially looked at the results.  However, when we reanalyzed the data (accounting for standard deviation and removing inconsistent data points), I actually found out my number was closer to 1200.  I was too disheartened to ever update that post.  However, it did not surprise me, my body has adjusted 200 calories lower than what it should be, do to my history of calorie deprivation.  Given all my recent work at gaining muscle and eating enough,  I’m curious to know if that number has improved, my guess is that it has.

FIGURING OUT TOTAL DAILY EXPENDITURE

AVERAGE IT

If you don’t have access to direct testing measurement, I would simply take an average of your BMR using the three methods listed above.

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In my example: (1399+ 1501+ 1338)/3 = 1401

That is the number you absolutely DO NOT want to eat under, EVER, EVER, EVER, EVER, EVER, EVER, EVER.  Got it?

MULTIPLY BY AN ACTIVITY FACTOR

Now you can find your total daily expenditure by multiplying that number by an activity factor.  Unless you are an athlete (you work out more than 10 hours per week), you would probably want to use 1.2.  I use this number for almost all my Hungry Hobby RD clients, I then adjust later for athletes and others who need adjustment.

1401 x 1.2 = 1,681

ADD EXERCISE

Finally, you will add exercise to your number which is typically somewhere between 200-500 calories per day for me.

1681 + 200 = 1881

1681+ 500 = 2181

So, I could reasonably consume 1800-2200 calories per day to MAINTAIN my weight.  If I wanted to lose weight, I need to be eating under 1800-2100 calories per day, but not below my BMR of 1401.

THE SLOWER THE BETTER

snail

Research shows that the slower the weight loss the more sustainable.  I’m sure you’ve heard that before, but it is still hard to believe.  When we decide we want to lose weight, we want it to come off IMMEDIATELY.  In reality, it should take you about the same amount of time to take it off as it took you to put it on.  That isn’t what the multi-billion dollar diet industry wants you to know, or think, but it is the truth.  It isn’t sexy or alluring to tell someone that it should take them 6 months to lose 20 pounds, but it’s the truth.  The reason why diets don’t work is because they damage your metabolism and don’t fit your individual needs.

 Please, be careful of how low you set your calorie counter, or if your a person that frequently skips meals, start counting to make sure you are eating enough calories, protein, fat, and carbs. Seek out help if you need it so that you can be successful long term.  

If you suspect you are dealing with a damaged metabolism or aren’t sure where to go from here, please feel free to check out my Nutrition Services website for one on one counseling.  I also highly recommend my healthy habits series and health/motivation tips page which will help highlight the weekly habits most important to a lifestyle change which will promote weight loss/weight maintenance.

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