In case your final smoothie left your power crashing an hour later, you may need to take into account how some so-called wholesome meals trigger speedy glucose spikes.
Nutritionists stress the significance of protecting blood sugar ranges regular all through the day. “If your blood sugar spikes too quickly, you can get a ‘sugar high,’ followed by a sugar crash, which can lead to fatigue, moodiness and cravings,” stated registered dietitian nutritionist Chelsey Amer.
It’s not at all times straightforward to steadiness, specialists say. “Management of blood glucose levels is like the bedtime story of Goldilocks,” stated RDN Toby Smithson, senior supervisor of diet and wellness on the American Diabetes Affiliation. “If levels are out of range for extended periods of time, it means you won’t feel your best, and, long term, can even increase the risk of complications from diabetes.”

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What does it really imply to have blood sugar spikes? Jessie Inchauspé, biochemist, writer of “Glucose Revolution” and founding father of Glucose Goddess, defined it this manner: “When we give our body some glucose, everything goes great. Our blood sugar is steady, and we feel it: good mood, sharp focus. But if we give our body too much glucose, then blood sugar increases too fast, and then after a spike, there’s a crash when you feel tired, hungry, craving more sugar or caffeine, sometimes anxious or irritable.”
Two Phrases To Study: GI And GL
A variety of phrases are tossed round after we’re speaking about blood sugar and diet, together with GI (glycemic index) and GL (glycemic load). RDN Sharon Palmer, writer of “The Plant-Powered Plan to Beat Diabetes,” defined what’s occurring: “Healthy people have a tightly regulated system to control blood glucose, also known as sugar. Glucose rises in the blood after eating, then the pancreas responds by providing the hormone insulin to usher that glucose (energy for the body) into body cells and tissues.
“The GI is a scale that ranks carb-containing foods and beverages by how quickly they raise blood sugar levels after eating,” Palmer stated. “High GI foods tend to increase blood sugar faster than low GI foods. The GI of foods can change based on serving size, fiber content, method of cooking and if they’re combined in a meal or snack.” A low GI is taken into account 55 or much less, and that’s the score given to most greens, fruits, nuts and minimally processed grains. Excessive GI meals are rated between 70 and 100, they usually embody sweet, cookies, breakfast cereal, potatoes, rice and bread.
Palmer stated of GL: “It’s a more accurate reflection of how foods impact glucose, as it takes into account the amount of carbs in a food, too. For example, watermelon is high in GI, but low in GL, because it has relatively little carbohydrates in a serving.”
In response to the College of Sydney’s Glycemic Index Analysis Service, which initially developed the GI idea and maintains the world’s main meals database on the topic, low-GL meals are these with lower than 10 grams of glucose per serving.
‘Healthy’ Meals That Are Recognized To Increase Blood Sugar
“Many foods marketed as ‘healthy’ can cause big spikes if eaten alone,” Inchauspé stated. She instructed shifting the main target of these meals from “healthy” to “pleasurable.”
“It’s fine to eat them, but we need to put them back where they belong: in the dessert category,” she added. Listed here are some prime “watch outs” from diet specialists:
Drinks: “Many plant-based milks, especially oat and rice milk, contain naturally occurring or added sugars that raise blood sugar more than people realize,” stated registered dietitian Marissa Karp. As she famous, portion dimension makes an enormous distinction: “Oat milk may not be an issue when it’s just a splash in your coffee, but if you’re having a full latte, you might be better off choosing regular milk or an unsweetened nut milk.” A serving of oat milk has a GI of 49.
RDN Daybreak Jackson Blatner talked about sports activities drinks (65 to 100 GI) and kombucha as different drinks with a excessive GI. There’s no standardized quantity for kombucha, however one small research confirmed kombucha consumption can decrease the GI of a high-glycemic meal, akin to one with rice.

Protein bars: “They can be a sneaky source of blood sugar spikes, especially if there are hidden sugars,” Amer stated. “Many of these bars don’t contain enough protein, or an adequate balance of carbs, protein and fats, to prevent a blood sugar spike.” One research of snack bars discovered GIs within the 43 to 56 vary, relying on formulation. In one other research, PowerBars have been proven to have GI ranges from 56 to 58.
Oatmeal: “While many brands of oatmeal contain some fiber, oatmeal alone tends to raise blood glucose levels more than you would expect,” Smithson stated. Oatmeal GI indexes vary from 42 for steel-cut oats, 55 for rolled oats and 74 for fast or fast oats. “Shop for oatmeal that’s highest in fiber per serving and doesn’t contain added sugar,” Smithson suggested. “Include a source of lean protein to eat with the oatmeal, like eggs, low fat cheese, nuts or nut butter.”
Sushi: “It can often be an unexpected cause of blood sugar spikes,” Amer stated. The index lists a GI for primary sushi of 45 to 55, however that quantity will range fairly a bit based mostly on the sort you order, the sauces you add and the way a lot you eat. One serving of sushi rice alone has an 85 GI. The quick grain and stickiness make it simpler to digest and lift blood glucose extra rapidly.
Sauces and dressings: “Foods with hidden sugars like pasta sauce (23 to 35 GI) and salad dressings (55 to 69 GI) can be a problem,” Smithson stated. “It’s important to check the total grams of carbohydrate on the nutrition facts, aiming for 1 gram of carbohydrate or less per 2-tablespoon serving.” If a pasta sauce or dressing has plenty of added sugar, its GI may very well be greater.
Smoothies and protein shakes: “They may have nutrient-dense ingredients like fruit, milk, yogurt, oats and honey, but all those ingredients are carbs, and they add up very quickly,” Smithson stated. “That will raise blood glucose levels more quickly than when choosing one or two carb foods with a lean source of protein.” In relation to protein shakes, Karp famous: “They can be a culprit if they’re made with sweetened powders or blended with banana, honey or flavored yogurt.”
The GI of smoothies can range fairly a bit, however latest analysis famous that the kinds studied ranged from 35 to 40 GI. Naturally, smoothies made with out added sugars are prone to have a decrease GI, particularly in the event that they embody fiber-rich fruits or seeds. Many industrial smoothies and protein shakes are usually not included in main GI databases, just like the College of Sydney GI database or peer-reviewed GI tables.
Rice truffles: “Yes, they’re light and low in calories, but they’re high on the glycemic index, so they can cause a quick spike in glucose,” Karp stated. Rice truffles have a GI of about 85, classifying them as excessive GI.
Fast Tips To Hold Blood Sugar Secure
Studying labels is at all times a good suggestion, Karp stated. “Check both the total and added sugar content, since even foods that seem healthy, like granola, yogurt or smoothies, can pack a surprising amount of sugar.” (The American Coronary heart Affiliation recommends limiting added sugars to not more than 6% of energy every day. For many American girls, that’s not more than 100 energy per day, or about 6 teaspoons of sugar. For males, it’s not more than 150 energy per day, or about 9 teaspoons.)
Additionally take note of whether or not the meals comprises protein, fats or fiber, as a result of these vitamins assist gradual how rapidly sugar enters your bloodstream. A meals that’s excessive in carbohydrates however low in these balancing vitamins is extra prone to trigger a spike.”
RDN Jerlyn Jones additionally instructed studying meals labels fastidiously. “To avoid blood sugar spikes, examine the percentage of added sugars and avoid foods with added sugars higher than 20% of the total weight of the product,” she stated. Meals with greater than 20% added sugar are thought-about “high sugar.”
There’s one other straightforward solution to maintain your self in steadiness. “One of the best things you can do to avoid a blood sugar spike after eating is go for a walk or do some light activity,” Amer stated. “This helps your body use the carbohydrates you consume.”
Jones agreed: “I advise my clients to get up and move 10 to 15 minutes after eating to help with digestion and lower blood sugars.”
The Unfavourable Lengthy-Time period Results Of Excessive-GI Meals
These high-GI meals could result in afternoon crashes every now and then, nevertheless it’s necessary to know they’ll have a detrimental impact long run, too. “In the short term, occasional spikes make you tired, unfocused and snacky,” Blatner stated. “But over time, frequent glucose surges may contribute to inflammation, weight gain and potentially insulin resistance.”
Whereas consuming a high-GI meals could make you’re feeling briefly sluggish or weak, making a behavior of consuming like this could have a long-term impact. “When your blood sugar stays balanced, your body has a consistent supply of energy and your mood, focus and metabolism function smoothly,” Karp stated. “But when it rises and falls too quickly, those repeated surges put stress on your system.”
Jones added different long-term considerations: “Research has shown that the long-term consequences of blood sugar spikes are pro-inflammatory and may lead to free radical damage, which has been linked to cancer, heart disease and aging.”
“As a general rule, we want to eat in a way that helps us feel good and energized, not sluggish or sleepy,” Karp concluded. “When you keep your blood sugar steady, you feel more energized and focused.”
