Glucose: What It Is, Where It Comes From, and How the Body Uses It
Author: Ukrainian Psychological Hub · Published: September 29, 2026 · Editorial Policy
Glucose is a monosaccharide, a single-unit sugar with the molecular formula C6H12O6, and one of the central fuels of human metabolism. It can come directly from foods, emerge when the digestive system breaks down starches and other carbohydrates, be released from stored glycogen, or be synthesized by the body when needed. Once available to tissues, glucose can be used to make ATP, stored as glycogen, or routed into other metabolic pathways.
In ordinary conversation, glucose is often treated as another name for “sugar.” Chemically, that is too broad. Glucose is one specific sugar. Table sugar is mainly sucrose, a disaccharide made from glucose and fructose. The PubChem record for D-glucose identifies D-glucose as a defined chemical compound, while the broader carbohydrate family also includes other monosaccharides, disaccharides, oligosaccharides, and polysaccharides.
The most useful way to think about glucose is therefore not as a special ingredient that must be eaten in purified form, but as a molecule at the crossroads of digestion, circulation, storage, cellular energy, and metabolic regulation. Sweet taste and food reward add a psychological layer to that biology, but sweetness is not a direct readout of how much glucose a food contains or how metabolically important that food is.
Quick answer: what is glucose?
Glucose is a six-carbon monosaccharide. “Monosaccharide” means that it is a single sugar unit rather than a molecule assembled from two or many sugar units. D-glucose is the biologically prominent form in humans and is sometimes called dextrose in food, laboratory, and medical contexts.
The NCBI overview of glucose physiology describes glucose as a six-carbon carbohydrate central to human energy metabolism. Cells can oxidize glucose to capture usable energy, the liver and skeletal muscle can store glucose units as glycogen, and the liver can help maintain glucose availability by breaking down glycogen or producing glucose from non-carbohydrate precursors.
Glucose is also a building block. Starch is made from long chains of glucose units, glycogen is the highly branched glucose-storage polymer used by animals, and common sucrose contains one glucose unit linked to one fructose unit. That is why a food does not need to contain much free glucose for glucose to become available after digestion.
Where does glucose come from?
Glucose reaches human metabolism through several routes. Some foods contain glucose as a free sugar. Digestible carbohydrates can also be broken down into glucose or other absorbable monosaccharides. The body can release glucose units from stored glycogen, and it can synthesize new glucose through gluconeogenesis when dietary glucose is unavailable or insufficient for current needs.
Glucose already present in foods
Fruits, vegetables, honey, syrups, and many processed foods can contain some free glucose. The exact amount varies widely by food, cultivar, ripeness, processing, formulation, and serving size. A food source should therefore be evaluated as a whole food or product rather than reduced to the presence of one sugar molecule.
For a broader source map, see Where Does Sugar Come From? Cane, Beets, Fruits, and Milk. That article owns the mainstream question of sugar origins; this article stays focused on glucose chemistry and metabolism.
Glucose produced when carbohydrates are digested
A large share of dietary glucose does not begin as free glucose. The NIDDK explanation of digestion notes that the digestive system breaks carbohydrates into simple sugars that can be absorbed into the bloodstream. Starches are especially important here because their structure is built from glucose units that digestive enzymes progressively release.
Disaccharides take a different route. Sucrose is split into glucose and fructose. Lactose is split into glucose and galactose. Maltose yields glucose units. The absorbed monosaccharides then enter distinct transport and metabolic pathways rather than behaving as one interchangeable substance.
This is one reason the phrase “all carbs are sugar” is misleading. Carbohydrates include chemically and physiologically distinct forms. Sugar vs Carbohydrates: What Is the Difference? explains the broader classification, while Simple Sugars: What They Are and How They Differ From Starches focuses on the structural difference between small sugars and starch polymers.
Glucose released from glycogen
When glucose is plentiful, some of it can be incorporated into glycogen. When glucose availability later needs support, glycogen can be broken down. A review of human glycogen metabolism describes glycogen as a branched polymer of glucose stored primarily in liver and skeletal muscle, with those stores serving different physiological roles.
Liver glycogen can contribute to maintaining circulating glucose between meals and during fasting. Muscle glycogen is predominantly a local fuel reserve for muscle itself, especially during activity. The distinction matters: “stored glucose” is not one centralized tank that every tissue can draw from in the same way.
Glucose made by the body
Humans can also synthesize glucose through gluconeogenesis. The NCBI review of gluconeogenesis describes substrates that include lactate, glycerol, pyruvate, and glucogenic amino acids, with the liver as the principal organ and the kidney contributing under some conditions.
This is a key correction to a common nutrition myth: the fact that some tissues use glucose does not mean a person must eat purified glucose or added sugar. The body can obtain glucose from digestible carbohydrate and can also make glucose when physiology requires it.
How is glucose absorbed?
Dietary glucose is absorbed mainly in the small intestine after carbohydrate digestion has produced absorbable monosaccharides. Transport across intestinal cells is controlled rather than being simple passive leakage.
A classic review of intestinal sugar absorption describes the sodium-glucose cotransporter SGLT1 as a major route for glucose and galactose entry across the intestinal brush border and GLUT2 as a major route for their exit toward the circulation; fructose uses a different apical transporter, GLUT5. This transporter biology is one of the clearest reasons glucose and fructose should not be treated as chemically identical just because both taste sweet.
After absorption, monosaccharides travel through the portal circulation toward the liver. The liver is therefore positioned to sense and process incoming carbohydrate-derived substrates before the rest of the body sees the same post-meal pattern.
What happens after glucose enters the bloodstream?
Glucose circulating in the blood is what everyday language calls blood sugar. MedlinePlus explains that insulin helps glucose move from the blood into cells, where it can be used for energy. That short description is useful, but the physiology is more nuanced because glucose transport differs across tissues and not every glucose transporter is regulated by insulin in the same way.
After a carbohydrate-containing meal, rising nutrient availability is accompanied by hormonal and neural signals that help coordinate uptake, use, and storage. Insulin promotes glucose disposal in insulin-sensitive tissues and supports glycogen synthesis, while the liver integrates incoming substrates with its own metabolic state. During fasting, hormonal regulation shifts toward preserving circulating fuel availability.
This article stops at the level of normal physiology. Blood-glucose readings, fasting glucose, A1C, glucose targets, continuous glucose monitoring, hyperglycemia, hypoglycemia, diabetes treatment, and personalized medication or diet management are medical topics with their own clinical evidence and decision rules.
How cells use glucose for energy
At the cellular level, glucose can enter glycolysis, a pathway that converts glucose into pyruvate while generating ATP and reduced electron carriers. The NCBI review of glucose metabolism places glycolysis alongside glycogen synthesis and breakdown, the pentose phosphate pathway, and oxidative metabolism as major parts of glucose handling.
When oxygen and mitochondrial capacity permit, pyruvate-derived carbon can be further oxidized through mitochondrial pathways, allowing much more ATP to be captured than glycolysis alone. The point is not that every glucose molecule follows one fixed route. Cellular demands, tissue type, oxygen availability, hormonal state, recent meals, activity, and energy balance all influence glucose fate.
Some cells and tissues have distinctive constraints. Red blood cells lack mitochondria and therefore depend on glycolysis for ATP production, releasing lactate as an end product. Skeletal muscle can increase glucose uptake and glycogen use dramatically during exercise. The liver can both consume and help provide glucose depending on whole-body conditions.
How and where the body stores glucose
The main readily mobilized storage form of glucose is glycogen. The human glycogen review describes liver and muscle as the major glycogen stores, but their functions are not identical.
Liver glycogen
The liver receives carbohydrate-derived substrates through the portal circulation and can direct glucose-6-phosphate toward glycogen synthesis, glycolysis, or other pathways. A review of human liver glucose metabolism details the liver’s role in balancing uptake, storage, production, and release across fed and fasting states.
Liver glycogen is especially important as a short-term buffer. It allows recently available glucose to be stored and later supports blood-glucose availability between meals. That buffering role is one reason a single meal does not map one-to-one onto immediate energy use.
Muscle glycogen
Skeletal muscle is a major site of post-meal glucose disposal and a major glucose consumer during physical activity. A 2025 review of muscle glucose uptake describes both insulin- and contraction-mediated pathways, with GLUT4 trafficking central to the rise in muscle glucose transport.
Muscle glycogen primarily supports the muscle in which it is stored. This local-use pattern helps explain why exercise can profoundly alter glucose demand without requiring the body to route all exercise fuel through the same circulating pathway at every moment.
What happens when more glucose is available than is immediately needed?
The body does not have a single switch that sends every “extra” glucose molecule directly to body fat. Glucose can be oxidized, used to replenish glycogen, enter the pentose phosphate pathway, support biosynthesis, or contribute carbon to lipid synthesis depending on tissue and metabolic context.
In an energy-surplus state, carbohydrate can contribute to fat synthesis and can also reduce the need to oxidize stored fat. But the real physiology is a network of competing pathways, not the internet shorthand “eat sugar, instantly store fat.” For questions about long-term weight change, the appropriate unit of analysis is the broader diet, energy balance, food environment, and behavior rather than one glucose molecule in isolation.
Glucose and the brain: what “primary fuel” actually means
The brain is metabolically demanding and, under ordinary fed conditions, relies heavily on glucose. Dienel’s review of brain glucose metabolism describes glucose as a major obligatory substrate supporting brain energetics and function, while also emphasizing the complexity of cellular and metabolic coupling within the brain.
That fact is often transformed into a much stronger claim: “the brain needs sugar, so sugary foods improve thinking.” The conclusion does not follow. The brain’s use of glucose says what fuel molecules participate in metabolism; it does not establish that eating more added sugar improves cognition in a person whose energy needs are already being met.
The brain is also metabolically flexible under certain conditions. A review of brain glucose and ketone utilization notes that ketone bodies can become important alternative fuels during prolonged fasting and other states in which ketone availability rises. Even then, glucose metabolism remains biologically important.
So the accurate formula is: the brain normally uses substantial glucose, the body regulates glucose availability, and the brain’s fuel needs do not create a general requirement for sweetened foods or added sugars.
Does glucose taste sweet?
Yes. Glucose can activate the human sweet-taste system, although its perceived sweetness is not identical to that of every other sugar. Sweetness is a sensory property produced by receptor activation and subsequent neural processing, not a label for nutritional quality.
Experimental work on human sweet-receptor subunits T1R2 and T1R3 shows that glucose can activate components of the canonical sweet-taste receptor system. The sensory signal begins in the mouth, while metabolic effects unfold after ingestion and absorption. Those are connected stages of eating, but they are not the same event.
That distinction matters in everyday reasoning. A strongly sweet food does not necessarily contain more glucose than a less sweet food. Sweetness depends on which sweet compounds are present, their concentrations, the food matrix, temperature, aroma, texture, and interactions with other tastes. A product sweetened with a high-intensity non-sugar sweetener can taste very sweet while containing little or no glucose from the sweetener itself.
Glucose, reward, and learned preference
Sweetness can be pleasurable, and foods that reliably deliver both sensory pleasure and post-ingestive energy can participate in learned preferences. Psychology enters here through perception, expectation, reinforcement, familiarity, context, memory, and repeated associations.
A systematic review and meta-analysis of human fMRI responses to sweet taste found relatively consistent activation in primary taste-related regions, while evidence for some reward-related regions was less stable across sensitivity analyses. That is a useful correction to simplistic claims that “sugar lights up the brain like a drug.” Human neuroimaging findings depend on task design, stimulus, expectation, nutritional state, and analytic method.
Research on carbohydrate reward also suggests that oral sweetness and post-ingestive metabolic signals can interact. In a controlled human study, Veldhuizen and colleagues reported that the energetic value of carbohydrate-containing beverages influenced reward-related responses in ways not explained by sweetness intensity alone. The study used maltodextrin and sucralose manipulations, so it supports a broader principle about sensory-metabolic integration rather than a claim that glucose alone produces a unique psychological effect.
Individual sweet preference is also variable. A scoping review of sweetness preference found substantial heterogeneity in how preference is measured and in the biological, experiential, and environmental factors associated with it. There is no scientifically useful “glucose personality type.”
Reward is not the same thing as addiction. A review of the human evidence on “sugar addiction” concluded that evidence for sugar addiction in humans is limited. Glucose can participate in rewarding food experiences without turning ordinary liking, hunger, craving, or habit into a substance-use diagnosis.
Glucose vs. sucrose, fructose, and dextrose
These terms are often placed in one bucket because they are all associated with sweetness, but they describe different molecules or naming conventions.
Glucose vs. sucrose
Glucose is a monosaccharide. Sucrose is a disaccharide composed of glucose and fructose. Ordinary white table sugar is predominantly sucrose. During digestion, sucrose must be split before its glucose and fructose components are absorbed.
For the full sucrose definition, digestion pathway, and its relationship to glucose and fructose, see Sucrose: What It Is and How It Differs From Glucose and Fructose.
Glucose vs. fructose
For a dedicated side-by-side comparison of molecular structure, sweetness, intestinal absorption, metabolic pathways, acute hormone responses, and evidence status, see Glucose vs Fructose: Chemistry, Sweetness, and Metabolism.
Glucose and fructose are both monosaccharides with the same overall molecular formula but different structures and metabolic handling. They use different major intestinal transport mechanisms and are processed differently after absorption. Treating them as identical because both are “simple sugars” erases biologically relevant distinctions.
For the fructose side of this comparison, including food sources and distinct early metabolic handling, see Fructose: What It Is, Where It Is Found, and How It Differs From Glucose.
Glucose vs. dextrose
In common food and medical usage, dextrose generally refers to D-glucose. On an ingredient list, “dextrose” therefore signals glucose in its biologically common stereochemical form rather than a completely different sugar family.
Those comparisons deserve separate treatment. Here, the distinctions are kept concise so the focus remains on understanding glucose itself.
Glucose on nutrition labels
In the United States, the Nutrition Facts label does not usually provide a separate line for glucose. Instead, glucose can contribute to Total Sugars, and when glucose or dextrose is added during processing it can also fall under the regulatory concept of Added Sugars.
The FDA’s Added Sugars guidance explains that Total Sugars includes sugars naturally present in foods and beverages plus sugars added during processing. Added Sugars is a subset that includes sugars added during processing or packaged as sweeteners; FDA examples include sucrose and dextrose. Naturally occurring sugars in foods such as fruit and milk are not counted as Added Sugars simply because they are chemically sugars.
For the label-level distinction between grams, serving size, Total Sugars, and Added Sugars, see Sugar Nutrition Facts: Calories, Carbohydrates, and Added Sugars.
Ingredient lists and Nutrition Facts answer different questions. An ingredient list can tell you that dextrose or another sweetening ingredient was used. Nutrition Facts quantifies carbohydrate and sugar categories per labeled serving. Neither should be interpreted by scanning for the word “glucose” alone.
Added sugars, free sugars, and naturally occurring glucose
“Added sugars” and “free sugars” are related public-health concepts, but they are not interchangeable regulatory terms. This matters because glucose can appear in either category depending on source and processing context.
The World Health Organization guideline on sugars defines free sugars as monosaccharides and disaccharides added to foods and beverages by manufacturers, cooks, or consumers, plus sugars naturally present in honey, syrups, fruit juices, and fruit juice concentrates. The FDA’s Added Sugars category is a U.S. labeling construct with its own rules. A molecule does not become “added” or “free” merely because it is glucose; the category depends on how the sugar enters the food.
This is why the phrase “natural glucose” can be psychologically misleading when used as a health halo. A chemical name does not by itself tell you the food’s fiber, micronutrients, processing, serving size, dietary role, or overall quality.
Is glucose bad for you?
Glucose is a normal metabolic substrate, so treating the molecule itself as inherently “good” or “bad” is not a useful scientific frame. Health effects depend on dose, food source, overall diet, energy balance, activity, metabolic context, and whether the sugar is embedded in a nutrient-rich food or delivered as a concentrated free or added sugar.
The WHO carbohydrate guideline emphasizes carbohydrate quality and recommends that carbohydrate intake come primarily from whole grains, vegetables, fruits, and pulses. That framing is more informative than trying to rank foods by whether the body will eventually encounter glucose from them.
An intact fruit can contain glucose and fructose while also providing water, fiber, micronutrients, and a food structure that shapes eating rate and satiety. A sugar-sweetened drink can provide rapidly consumed free sugars with little fiber. The molecules overlap; the food contexts do not.
For the same reason, an ingredient’s “natural,” “raw,” or plant-derived origin should not be treated as a substitute for composition, dose, and food context. Source cues can affect expectations and perceived healthfulness even when they do not establish a unique metabolic advantage.
A systematic review of 72 studies in 32 countries found that perceived food naturalness is important to many consumers and influences food acceptance and choice, although definitions and measures of “naturalness” vary. This supports treating naturalness as a consumer-perception variable rather than as a chemical property that automatically determines health value.
Glucose and common brain-energy myths
Myth: “The brain uses glucose, so eating sugar improves thinking.”
The brain uses glucose extensively, but that does not mean more added sugar produces better cognition. The body regulates glucose supply across meals and fasting, and it can produce glucose endogenously. Cognitive performance is influenced by sleep, stress, hydration, illness, medications, nutritional status, task demands, and many other variables. A metabolic requirement cannot be converted into a blanket performance recommendation.
Myth: “If a food is not sweet, it cannot become glucose.”
Starch is the obvious counterexample. It is not perceived as table-sugar sweetness, yet it is made from glucose units and can be digested into absorbable glucose. Sensory sweetness and metabolic destination are related only imperfectly.
Myth: “Sweet taste tells you how much glucose is present.”
Sweetness intensity depends on the sweet compounds present, concentration, receptor interactions, temperature, aroma, texture, and food matrix. Non-sugar sweeteners can produce intense sweetness without providing glucose as the sweetening molecule. Conversely, starchy foods can yield substantial glucose after digestion without tasting strongly sweet.
Myth: “Insulin is the only way any cell can take up glucose.”
Insulin is central to whole-body glucose regulation and strongly influences glucose uptake in tissues such as skeletal muscle and adipose tissue, but glucose transport biology differs by tissue. Multiple transporter families operate in the intestine, liver, brain, blood cells, and other organs. The slogan is therefore too absolute for the underlying physiology.
Myth: “Glucose activates reward pathways, therefore it is addictive.”
Pleasure, reinforcement, craving, habit, and addiction are different constructs. Human eating behavior can involve reward learning and cue-driven desire without meeting criteria for a substance-use disorder. The evidence does not support diagnosing “glucose addiction” from a preference for sweet foods or from the existence of neural reward responses.
Glucose, hunger, cravings, and food cues
People rarely experience glucose as an isolated molecule. They experience foods: their sweetness, aroma, texture, packaging, memories, availability, price, social meaning, and learned consequences. That is why craving a sweet pastry or soda cannot be reduced to “the body asking for glucose.”
Cravings can be shaped by repeated cue-reward associations, habit, restriction, sleep loss, stress, routine, and the expectation of sensory pleasure. Hunger is a broader physiological and motivational state, while craving is usually more specific to a food or sensory experience. A preference for sweetness is another distinct construct. Keeping these terms separate prevents ordinary food motivation from being mislabeled as pathology.
Glucose can contribute to the post-ingestive energy consequences that make carbohydrate-rich foods learnable and rewarding, but the psychological object of desire is often the complete food and situation rather than one molecule. A familiar dessert may carry texture, fat, aroma, nostalgia, social ritual, and sweetness simultaneously.
Does every carbohydrate become glucose?
No. This popular statement is useful only as a rough shorthand and becomes inaccurate when taken literally. Digestible starch is built from glucose and can yield glucose during digestion. Sucrose yields glucose plus fructose. Lactose yields glucose plus galactose. Fructose and galactose are absorbed as their own monosaccharides and then undergo their own metabolic processing.
Dietary fiber is also carbohydrate, but humans do not digest most fiber into glucose in the same way they digest starch. Some fibers are fermented by gut microbes into short-chain fatty acids and other metabolites. Saying “all carbohydrate turns into glucose” therefore erases important chemical and physiological differences.
Does the body need dietary glucose?
The body needs access to glucose for important functions, but that is different from requiring glucose as a purified dietary ingredient or requiring added sugar. Digestible carbohydrate can supply glucose, glycogen can be mobilized, and gluconeogenesis can generate glucose from non-carbohydrate precursors.
That distinction is especially important in nutrition messaging because “the body uses glucose” is sometimes presented as a reason to consume sweet foods. Physiology supports the need for regulated glucose availability, not a universal requirement for candy, soda, table sugar, or glucose syrup.
What glucose tells us about the psychology of “simple” nutrition stories
Glucose is a good example of how a true biological statement can become a misleading food rule. “The brain uses glucose,” “starch becomes glucose,” “glucose raises blood glucose,” and “sweet foods can be rewarding” are all statements that require context before they can guide behavior.
People naturally compress complex systems into familiar categories: sugar versus no sugar, natural versus artificial, good versus bad, clean versus processed. Those categories reduce cognitive load, but they can also hide the distinctions that matter most: molecule versus food, taste versus metabolism, acute response versus long-term pattern, association versus causation, and normal reward versus clinical disorder.
For glucose, the stronger mental model is relational. Ask what molecule is present, where it came from, what food matrix carries it, what digestive step releases it, what tissue is using it, what physiological state the person is in, and what claim is actually being made. That model is more accurate than treating “glucose” as a health verdict.
What this article does not cover
This page owns glucose as a chemistry-and-metabolism concept inside Sugar Psychology & Sugar Knowledge. It explains what glucose is, its dietary and endogenous sources, absorption, cellular use, storage, sweet perception, and the psychology of common interpretations.
It does not provide target blood-glucose ranges, fasting glucose interpretation, A1C interpretation, continuous glucose monitor guidance, treatment of high or low blood glucose, diabetes diagnosis, medication adjustments, or personalized medical advice. Those questions belong to medically governed clinical resources because their meaning depends on measurement method, symptoms, diagnosis, medication, timing, pregnancy status, and other individual factors.
Frequently asked questions
Is glucose a sugar?
Yes. Glucose is a monosaccharide, meaning a single-unit sugar. It is one specific member of the much broader carbohydrate family.
Is glucose the same as blood sugar?
In common medical language, “blood sugar” usually means glucose circulating in the blood. Glucose as a molecule also exists inside cells, in foods, and as units incorporated into glycogen and starch, so the terms are not identical in every context.
Is glucose the same as table sugar?
No. Table sugar is mainly sucrose. Sucrose is a disaccharide made from one glucose unit and one fructose unit.
Is dextrose glucose?
Yes, in standard food and medical usage dextrose refers to D-glucose, the biologically common form of glucose.
Where does the glucose in the body come from?
It can come directly from foods, be released during digestion of starches and disaccharides, be mobilized from glycogen stores, or be synthesized through gluconeogenesis.
Where is glucose stored?
Glucose units are stored mainly as glycogen in the liver and skeletal muscle. Liver glycogen can support circulating glucose availability; muscle glycogen is primarily used locally by muscle.
Does fruit contain glucose?
Many fruits contain some glucose along with fructose and sucrose, but amounts differ by fruit and ripeness. Glucose naturally present in intact fruit is not automatically an Added Sugar under U.S. labeling rules.
Does the brain only use glucose?
Glucose is the brain’s dominant fuel under ordinary conditions, but ketone bodies can contribute substantially during prolonged fasting and other ketogenic states. The brain’s normal reliance on glucose does not imply a need for added sugar.
Does glucose cause a sugar rush?
The presence of glucose in a food is not enough to prove a distinctive subjective “rush.” Perceived energy and behavior depend on expectation, meal composition, context, activity, caffeine or other ingredients, and individual state. The separate sugar-rush question requires its own evidence rather than being inferred from basic glucose metabolism.
Is glucose addictive?
Glucose participates in energy metabolism and can contribute to rewarding food experiences, but those facts do not establish a clinical addiction to glucose. Human evidence for “sugar addiction” remains limited, and preference, craving, habit, overeating, and substance-use disorders should be kept conceptually distinct.
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References
Adeva-Andany, M. M., González-Lucán, M., Donapetry-García, C., Fernández-Fernández, C., & Ameneiros-Rodríguez, E. (2016). Glycogen metabolism in humans. BBA Clinical, 5, 85–100. PubMed
Dienel, G. A. (2019). Brain Glucose Metabolism: Integration of Energetics with Function. Physiological Reviews, 99(1), 949–1045. DOI: 10.1152/physrev.00062.2017. PubMed
Dubovski, N., et al. (2023). Sensitivity of human sweet taste receptor subunits T1R2 and T1R3 to activation by glucose enantiomers. Chemical Senses. PubMed
Hantzidiamantis, P. J., et al. Physiology, Glucose. StatPearls. National Center for Biotechnology Information. NCBI Bookshelf
Kapogiannis, D., & Avgerinos, K. I. (2020). Brain glucose and ketone utilization in brain aging and neurodegenerative diseases. International Review of Neurobiology. PubMed
MedlinePlus. Carbohydrates. U.S. National Library of Medicine. MedlinePlus
Melkonian, E. A., et al. Physiology, Gluconeogenesis. StatPearls. National Center for Biotechnology Information. NCBI Bookshelf
National Institute of Diabetes and Digestive and Kidney Diseases. Your Digestive System & How It Works. NIDDK
National Library of Medicine. D-Glucose. PubChem Compound Summary. PubChem
Richter, E. A., Bilan, P. J., & Klip, A. (2025). A comprehensive view of muscle glucose uptake and its regulation. PubMed
Roberts, C. A., et al. (2020). The effect of sweet taste on neural activity: A systematic review and meta-analysis of human fMRI studies. The Journal of Nutrition, 150(6). DOI: 10.1093/jn/nxaa071. PubMed
Román, S., Sánchez-Siles, L. M., & Siegrist, M. (2017). The importance of food naturalness for consumers: Results of a systematic review. Trends in Food Science & Technology, 67, 44–57. DOI: 10.1016/j.tifs.2017.06.010. ScienceDirect
U.S. Food and Drug Administration. Added Sugars on the Nutrition Facts Label. FDA
Veldhuizen, M. G., et al. (2017). Integration of Sweet Taste and Metabolism Determines Carbohydrate Reward. Current Biology, 27(16), 2476–2485.e6. DOI: 10.1016/j.cub.2017.07.018. PubMed
Venditti, C., et al. (2020). Determinants of sweetness preference: A scoping review. PubMed
Westwater, M. L., Fletcher, P. C., & Ziauddeen, H. (2016). Sugar addiction: the state of the science. European Journal of Nutrition, 55(Suppl 2), 55–69. DOI: 10.1007/s00394-016-1229-6. PubMed
World Health Organization. (2015). Guideline: Sugars intake for adults and children. WHO
World Health Organization. (2023). Carbohydrate intake for adults and children: WHO guideline. WHO
Wright, E. M., Martín, M. G., & Turk, E. (2003). Intestinal absorption in health and disease—sugars. Best Practice & Research Clinical Gastroenterology, 17(6), 943–956. PubMed