Related Experiment Video
Updated: Jul 5, 2025
08:01
A Method for Manipulating Blood Glucose and Measuring Resulting Changes in Cognitive Accessibility of Target Stimuli
Published on: August 12, 2016
9.0K
The Impact of Free and Added Sugars on Cognitive Function: A Systematic Review and Meta-Analysis
Kerri M Gillespie1, Melanie J White2, Eva Kemps3
1School of Clinical Sciences, Faculty of Health, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia.
Nutrients
|January 11, 2024
Summary
Excessive added sugar intake may harm cognitive function, particularly long-term or prenatal exposure. Natural fructose foods may reduce cognitive impairment risk, while glucose can improve immediate recall.
Area of Science:
- Neuroscience
- Nutrition Science
- Public Health
Background:
- While animal models suggest a link between high sugar intake and cognitive decline, human data remain limited.
- Understanding the impact of free and added sugars on human cognition is crucial for public health.
- Existing research varies in methodology and quality, necessitating a comprehensive review.
Approach:
- A systematic review and meta-analysis evaluated 77 studies (experimental trials, cross-sectional, and cohort) on healthy human participants.
- Assessed the quality of evidence regarding free and added sugar consumption and cognitive function.
- Analyzed short-term glucose effects on cognition and long-term impacts of added sugars.
Key Points:
- Cohort and cross-sectional studies indicated a positive correlation between added sugar consumption and cognitive impairment risk.
- Natural fructose-containing foods were associated with a reduced risk of cognitive impairment.
- Meta-analysis of glucose's effect on recall showed significant improvements in immediate free recall.
Conclusions:
- Optimal cognitive function may depend on tightly regulated blood glucose levels, influenced by individual physiology.
- Excessive, long-term, or prenatal added sugar consumption potentially has detrimental effects on cognitive function.
- Further research is required to elucidate the specific impacts of various sugar types on cognition.
Related Concept Videos
01:19Overview of Carbohydrate Metabolism
1.1K
Carbohydrate metabolism is a fundamental biochemical process that ensures a constant supply of energy to living cells. The most important carbohydrate is glucose, which can be broken down via glycolysis to enter into the Krebs cycle and eventually lead to the production of ATP through oxidative phosphorylation.
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
1.1K
01:30Attention-Deficit/Hyperactivity Disorder
68
Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
68
01:30Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
126
Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function.
126
01:17Cognitivism
1.4K
Cognitive psychology emerged as a significant field in the mid-20th century. It focused on understanding humans' internal mental processes. This approach emphasizes how people perceive, remember, think, and solve problems—elements critical to human cognition.
Previously dominated by behaviorism, which prioritized observable behaviors and largely ignored mental processes, psychology transformed in the 1950s. Cognitive psychologists argue that understanding how we think and process...
Previously dominated by behaviorism, which prioritized observable behaviors and largely ignored mental processes, psychology transformed in the 1950s. Cognitive psychologists argue that understanding how we think and process...
1.4K
01:30Cognitive Development During Adulthood
112
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
112
01:30Information Processing Approach
38
The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is...
38