Why Weight Loss After 50 Can Be Harder When You’re Smaller
I had a conversation with a client recently that brought up a tough realization about weight loss.
Sometimes being smaller can actually make losing weight harder.
Not because your metabolism is “broken.”
Simply because there is less of you to fuel. 😂
Think of it as less real estate to maintain.
If you're shorter, smaller-framed, weigh less, or carry less muscle, your body simply may not require as many calories as someone who is taller, heavier and more muscular.
And unfortunately, that also means there is less room to create a calorie deficit.
What a smaller body may need
Let's take a 55-year-old woman who is 5'3" and weighs 135 pounds.
Using a commonly used formula called the Mifflin–St Jeor equation, her body might use around 1,175 calories a day at rest.
That’s the energy for keeping her alive—breathing, circulating blood, keeping her organs working—even before she gets up and does anything. Calorie calculators often call this BMR; what we’re estimating here is her resting energy use.
But she doesn’t spend her entire life lying still. 😂
She gets up. Gets dressed. Digests food. Moves around. All of that takes energy too.
For someone who is mostly sedentary, multiplying that resting estimate by about 1.2 gives us a rough maintenance estimate of 1,410 calories a day. Someone who moves more may need more.
Maintenance is the amount that would keep her weight roughly stable. It’s different from what she burns at rest.
These are estimates, of course. Our bodies don't come with calorie labels. 😂
If you’re curious about your own estimated calorie needs, get in touch and I’ll help you calculate yours.
So let's say she wants to lose 5 or 10 pounds.
You've probably heard the old rule that you need to create roughly a 3,500-calorie deficit to lose one pound of fat.
Real life isn't quite that mathematically perfect, but it helps illustrate the problem.
If her maintenance is around 1,400 calories, where exactly are we going to find a 500-calorie daily deficit?
Eating 900 calories a day?
That would leave very little room to nourish her body. So no, that’s not where I’d go with this. 😂
This is exactly why “just cut 500 calories” doesn’t make sense for everyone.
What if you have more weight to lose?
But maybe you're reading this thinking...
“Okay, but I'm 5'6" and 170 pounds. I have more weight to lose.
Shouldn't I be able to eat more AND lose weight?”
Yes, you may have a little more room to work with.
Using the same formula, a 55-year-old woman who is 5′6″ and 170 pounds might use about 1,380 calories a day at rest. With that same mostly sedentary estimate, maintenance comes out around 1,660 calories. More movement could bring that higher.
So yes, on paper, there may be more room to create a deficit.
But here's the important part:
Having room to create a deficit doesn't mean you're actually creating one.
Most people I talk to honestly don't know how many calories they're eating.
They know they're eating pretty healthy.
They're having chicken, salads, Greek yogurt, nuts, avocado...
Maybe they're exercising several times a week.
And they understandably think:
“I should be losing weight.”
But “healthy” and “calorie deficit” aren't necessarily the same thing.
Sometimes, before cutting anything, it helps to simply figure out where you are.
Track what you normally eat for a week.
Not the “good” version because you're tracking. 😂
Your actual food.
The dressing. The handful of nuts. The coffee creamer. The bites while you're making dinner. The weekend dinner.
Not because you need to count calories forever.
But because it's really difficult to adjust something when you don't know where you're starting.
Then we can look for a reasonable, consistent deficit that you can actually maintain over time.
Why eating the bare minimum can backfire
So why not just eat the bare minimum?
Slash your calories.
Eat very little.
Lose the weight FAST.
Well...
A lot of people have tried that.
And it works.
Until it doesn't.
Not because your body magically stops losing fat, but because our bodies are pretty good at adapting when we give them dramatically less energy.
Energy levels can drop.
We may unconsciously move less.
We sit more.
We don't feel like taking that walk.
Our workouts aren't as energetic.
And the amount of energy we're burning throughout the day can come down along with it.
Then there's the OTHER side of the equation.
Hunger.
For some people that means cravings.
For others, overeating.
And sometimes it's the classic:
“I was PERFECT all week...and then I completely blew it Saturday.”
Except maybe you didn't “blow it.”
Maybe you were just really hungry.
And one big day of eating can wipe out a surprisingly large portion of the deficit you worked so hard to create all week.
Then comes the frustration.
The guilt.
The feeling that you have no willpower.
So Monday comes and you decide to cut even harder.
And around we go.
A deficit you can live with
That's why I'm much more interested in finding a deficit someone can actually live with.
Maybe that's an average 200-calorie daily deficit created through a combination of nutrition AND movement.
Eat a little less.
Walk a little more.
Move more throughout the day.
Strength train and maintain or build muscle.
And then...
be patient.
Because a 200-calorie daily deficit is about 1,400 calories per week.
Using that rough 3,500-calorie idea, you can see why we’re talking about roughly 2½ weeks for ONE pound.
Five pounds?
On paper, about 12½ weeks.
Will your body follow that calendar exactly?
Of course not. 😂
Your energy needs change as you lose weight, and water and digestion can hide what’s happening on the scale. That math helps explain why patience matters. Your actual trend over several weeks tells us whether the plan needs adjusting.
Someone with more weight to lose may have room for a somewhat larger deficit and may see faster progress.
But the principle is the same:
Find a deficit you can actually maintain, and maintain it long enough for it to matter.
What can you realistically keep doing?
So rather than asking:
“How little can I eat?”
Maybe the better questions are:
“Where am I right now?”
and
“What can I realistically keep doing?”
Can I eat a little less without being miserable?
Can I walk more?
Can I become stronger and maintain or build muscle?
Can I move more throughout my normal day?
Can I create a reasonable deficit and be patient enough to allow it to work?
Because unfortunately...
Weight loss isn't Amazon Prime. 😂
You don't place the order today and expect it to show up at your doorstep tomorrow.
Sometimes you do all the right things...
and then you have to give your body enough time for those things to add up.
Slow doesn't necessarily mean it's not working.
Sometimes slow is exactly what sustainable looks like.
Related: Building Muscle After Menopause
Further reading: Mifflin–St Jeor original study; NIDDK: Body Weight Planner
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