Eat Potatoes THIS Way and They Won't Spike Your Blood Sugar | Dr. Neal Barnard

HealthLove Senior Health
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39 Video Views·Aug 3, 2026
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Video Summary
AI GeneratedDr. Neil Barnard explains that potatoes are not inherently harmful to blood sugar; rather, the issue lies in how they are prepared and served. By utilizing specific cooking and pairing techniques, potatoes can be a filling, healthy part of a diet for those managing type 2 diabetes.
There is a good chance that somewhere along the way,
someone told you the potato was the enemy.
That if your blood sugar was high,
the potato was one of the first things to go.
So you gave it up, or you started feeling guilty
every time one landed on your plate,
and you feel like a person like you
is simply not allowed to have anymore.
I want to tell you that you were misled.
Not lied to, exactly, but a much bigger truth.
The potato was never your problem.
What we do to the potato is the problem.
And once you see the difference,
this humble, inexpensive food goes from something
you fear back to something you can put on your plate
several times a week without watching your blood sugar climb.
There is a right way to eat a potato,
and it is not complicated.
I am going to walk you through it.
My name is Dr. Neil Barnard.
I am a physician, and in 1985,
I founded the Physicians Committee
for Responsible Medicine.
I have spent a great deal of my career
on one idea that still makes people uncomfortable,
which is that carbohydrates,
the very food so many of my patients were told to fear,
are not the cause of type 2 diabetes,
and that a diet built around whole plant foods
can actually help bring blood sugar down.
The potato sits right in the middle of that argument.
So let me show you what it really does
and how to eat it so it works for you
instead of against you.
Start with a fact that surprises almost everyone.
When researchers set out, they tested dozens of them,
and the single most filling food of them all
was not chicken, not eggs, not a slice of hearty bread.
Spoonful for spoonful than almost anything else
they put in front of people.
A food that fills you up on very few calories
is not a food that was designed to hurt you.
So why does it have such a bad reputation?
Because of four things we do to it.
Fix those four things,
and the potato comes back to your table.
Here is the first, and it is the one that does the most work.
Number one, cook it, then cool it.
This is the trick to magic on this whole list.
When you cook a potato, the starch inside it opens up,
soft and ready to be digested quickly,
which is what sends blood sugar up.
But when you then let that potato cool down
in the refrigerator, something quietly remarkable happens.
Starch begins to reform into a new, tighter structure
that your body can no longer break down so easily.
Scientists call it resistant starch,
and the name tells you exactly what it does.
It resists digestion.
It behaves far more like fiber than like sugar.
It is not fully broken down into glucose
in the small intestine at all.
Instead, a good portion of it travels further down,
where it feeds the healthy bacteria in your gut,
and it raises your blood sugar noticeably less
than the very same potato would have, hot out of the oven.
So a potato boiled today and eaten cold tomorrow
in a potato salad made with a light dressing
is gentler on your blood sugar
than one eaten piping hot tonight.
And here is the part people love.
You do not have to eat it cold.
You can gently reheat it,
and much of that resistant starch stays put.
So cook a batch, cool them in the fridge overnight,
and use them through the week.
That single habit changes the potato
more than anything else you will hear today.
Before I go on, hold onto that phrase, resistant starch,
because it comes back at the end
and ties this whole thing together.
Now, number two.
Number two, keep it whole.
Shape matters more than you would think.
The moment you mash a potato into a smooth puree,
you have broken open all of those cells
and made the starch inside the blood sugar up faster.
A potato you eat in its own natural pieces,
cubed or halved or simply whole,
digests more slowly
because your body has to do the work of breaking it down.
And the skin is not a thing to peel away and throw out.
That skin is where a good share of the fiber lives,
and fiber is exactly what slows the whole process down.
So a small, boiled potato eaten with its skin on
is a very different food to your bloodstream
than a mound of peeled, whipped, mashed potatoes.
Same vegetable.
Two completely different messages to your body.
Now, I promised you
that the potato was never the real problem,
and here is where that becomes undeniable.
Number three, look at what is riding on top of it.
Think honestly about how a potato usually reaches you.
It is deep oil that adds nothing
but the kind of fat that harms you.
Or it arrives, baked but buried,
under a scoop of butter, a spoon of sourdough or of bacon.
And then we blame the potato.
But the potato underneath all of that did not change.
What changed is that we poured saturated fat all over it
and dropped it in a fryer.
That fat is the trouble,
and it also makes it harder for your body
to handle the blood sugar from the meal.
The potato took the blame for the company it was keeping.
So here is what I tell my patients.
Bake it or boil it, not fry it,
and dress it with things that help rather than harm.
A spoon of salsa, a little mustard,
chopped chives and a squeeze of lemon,
some steamed broccoli and a drizzle of good olive oil.
You keep every bit of the comfort,
and you lose the thing that was actually raising your numbers.
Two ways down and two to go,
and the last one is the smallest change of all.
But it may be my favorite, because it costs you nothing.
Number four, never send a potato in alone.
It changes how that food hits your blood,
and this is where you have real power.
A plain potato eaten by itself will raise your blood sugar
faster than the same potato eaten as part of a meal
with beans next to it or lentils,
which bring their own slow, steady fiber.
Add a pile of greens or a real vegetable salad,
and here is a small, almost old-fashioned trick
with good science behind it.
A little vinegar in a dressing on that salad
genuinely blunts the rise in blood sugar that follows.
The acid slows how fast the meal leaves your stomach.
Dressing was doing something
your grandmother never got the credit for.
So the potato that comes with beans and greens
and a splash of vinegar is a calmer, kinder meal
than the potato standing alone on a plate.
Now step back and look at the four together.
They are one idea, told four ways.
Cook it and cool it so the starch turns resistant.
Keep it whole with the skin on so the fiber stays intact.
Watch what you put on top,
because that is where the real harm was hiding.
And never send it in alone.
And a meal that arrives slowly
is a meal your blood sugar can handle.
And here is the hopeful part,
the reason I wanted to make this video at all.
So much of the advice you have been given over the years
has been a list of things to take away.
Stop eating this, give up that.
It is exhausting and it is often wrong.
The truth about the potato is the opposite kind of advice.
It is a food you were told to fear
that you can very likely welcome back
if you simply treat it with a little respect.
The most filling food they ever tested,
grown cheaply almost everywhere,
sitting in your kitchen right now,
is not the thing standing between you
and a better blood sugar number.
How we cook it and cover it was.
So do not empty your pantry today.
Do one thing, boil a few potatoes tonight,
let them cool in the refrigerator overnight,
and have them tomorrow with a little vinegar
and something green.
One small change, kept for a few weeks,
teaches you more than any list of foods to fear ever could.
If seeing the real reason behind advice like this
is useful to you, consider subscribing.
The next food everyone gets wrong
is one I think you will want to hear about
for the same reason.
Your body was never as fragile as they told you.
Treat your food with a little understanding
and it will meet you halfway.
I will see you in the next one.
