
A steady glucose monitor helps individuals observe their blood sugar spikes and dips.
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By all measurements, Judy Freeman, age 76, is in incredible well being. She would not have diabetes or coronary heart illness. She’s not chubby. She stays energetic.
“I attempt to stroll no less than 4 or 5 occasions every week,” says Freeman, who’s a widely known potter in Alpine, Texas. “I additionally work about 20 hours within the studio.”
However up to now yr or so, Freeman hasn’t felt like herself. She’s been extra drained and sluggish. And he or she has had extra hassle shedding a bit further weight. “I try to I am unable to lose it,” she says.
So Freeman determined to experiment with a brand new know-how for a couple of weeks: a steady glucose monitor.
It is a small patch that inserts a needle into your pores and skin. The machine estimates your blood sugar each couple of minutes and sends the worth to an app in your cellphone. You’ll be able to observe how varied meals you eat alter your blood sugar.
Freeman puzzled if the additional details about her blood sugar would possibly give her perception into why she felt so sluggish and caught in her weight reduction.

Judy Freeman is an artist in Alpine, Texas. She needed to know if monitoring her blood sugar might enhance her well being.
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Michaeleen Doucleff/For NPR
On the primary day, she uncovered a giant clue: About two hours after lunch, her blood sugar nosedived under her baseline ranges.
Dips set off overeating
Research have proven conclusively that these displays significantly assist individuals handle diabetes. However in 2024, the FDA permitted the primary steady glucose displays for individuals with out diabetes. Now, two firms, Dexcom and Abbott, promote and market the units to anybody who needs to trace their blood sugar. They price about $50 and final for a few weeks.
However scientists are nonetheless attempting to determine if — and the way — these displays might assist individuals with out diabetes. Can the info inspire individuals to eat a more healthy weight loss program by serving to them find out how meals impacts their our bodies?
One of many scientists main this effort is Sarah Berry, a nutritionist at King’s School London. She’s additionally chief scientist on the firm Zoe, which sells customized diet plans that incorporate these units.
In collaboration with Massachusetts Normal Hospital and Stanford College, Berry and her colleagues led two giant research during which hundreds of individuals with out diabetes put on steady glucose displays whereas they eat tens of hundreds of meals.
After analyzing all of their knowledge, Berry says one discovering stands out: “An enormous proportion of persons are what we name dippers,” she says.
For those who’re a dipper, your blood sugar generally acts in a selected method: After consuming carbohydrates, it rises rapidly, after which about two to 3 hours later, it generally plummets low, under your baseline, or fasting, stage.
“So you may have this large improve adopted by this large crash,” Berry says. “Not everybody will get these dips, however we see that fairly a excessive proportion of individuals do.”
These dips can set off overeating, their research discovered, so it might make it tougher to drop some pounds.
“In case you are dipping, you then really feel extra hungry extra rapidly, and on common you are inclined to eat 80 energy extra on the subsequent meal and 320 energy extra over a complete day,” she says.
However consuming extra wasn’t the one drawback with dips. Berry’s group has discovered that the sugar crashes additionally correlated with an individual’s temper. Throughout a dip, individuals tended to really feel much less alert and extra fatigued, she and her colleagues reported within the journal Nature Metabolism.
These conclusions line up with earlier research on individuals with diabetes, says Dalia Perelman, who’s a analysis dietitian at Stanford College and wasn’t concerned on this analysis.
“When your blood sugar is excessive, individuals are typically torpid, fatigued, and thirsty,” Perelman says. “You are identical to, ugh.”
When your blood sugar is low, you are jittery. You’ll be able to have coronary heart palpitations. And also you grow to be tremendous hungry. “Low blood sugar provides your physique very robust indicators,” she says. “You actually really feel horrible,” which brings us again to Judy Freeman in Alpine, Texas.
The primary day Freeman wore the glucose monitor, she ate lunch as common. About two hours later, she began to really feel horrible. “I had this actually sinking feeling. It was a kind of nervousness or melancholy. I felt like if I do not stand up, I am simply going to cease respiratory and die. It was so overpowering,” Freeman says.
When Freeman glanced on the monitor, she might hardly consider what she noticed: “My blood sugar had shot up sooner or later, after which it plummeted right down to the bottom level.”
This sinking feeling wasn’t new to Freeman. She’s had it every so often. “I simply by no means, ever thought it was in any method correlated with what I ate or something like that.“
In case you are involved that your blood sugar could also be fluctuating wildly and also you wish to even issues out, listed below are three issues you may strive:
1. Put some garments on these carbs
Do not eat meals and snacks that consist largely of carbohydrates, Perelman says. “Do not eat bare carbs.”
As an alternative, eat them with protein and wholesome fat. Which means oils from greens, seeds and nuts, but additionally fat from fish. So add eggs to breakfast, canned fish for lunch or tofu for dinner.
On prime of that, add extra fiber — tons extra. For that, the go-to ingredient is beans, says nutritionist Mindy Patterson on the Texas Girl’s College. “You actually should eat beans to get sufficient fiber in your weight loss program,” she says. (Chia seeds are one other nice supply of fiber.)
“Fiber and protein collectively put a velocity bump in your digestion,” says scientific nutritionist Karen Kennedy. “They actually stabilize your blood sugar.”
2. Sprinkle the carbs all through the day
To stop dips, you need your intestine to slowly drip carbs into your blood, not douse it with a deluge of sugars, Perelman says. So do not eat a bunch of carbohydrates all at one meal.
For stopping dips, “it would not matter what number of carbs you ate all through the day,” she says. “It issues what number of carbs you have had at every meal.”
3. Take note of what you eat first at a meal
With meals, order issues, too. Eat the protein, fiber and fats first at a meal and the carbs final, Kennedy says.
Say you are having a steak, salad and baked potato for dinner. “For those who eat the salad and the steak first, after which the potato, you may see that you do not have as a lot of a spike in blood sugar or as a lot of a drop afterwards,” she says.
In case your blood sugar retains a extra even keel, then your temper and starvation will do the identical.
And this is the good half: You needn’t purchase a glucose monitor to determine this out, says Sarah Berry at King’s School London. Merely take note of how you are feeling about two hours after a meal. For those who get moody, anxious or tremendous hungry, you are most likely a dipper.
Edited by Jane Greenhalgh