22/10/2025
New findings are raising red flags about how too much sugar may be messing with how your brain learns and remembers. While your brain does need glucose to work, consuming large amounts of added sugar over time has been linked to poorer memory, reduced learning ability and subtle cognitive decline. Studies show that people with high intake of sugar-sweetened beverages or processed foods rich in added sugars tend to perform worse on memory tests and learning tasks. The negative effects seem especially linked with the brain’s memory hub, the hippocampus, which is essential for forming new memories.
What this means is that if your diet is loaded with sweets, soda and dessert-type foods, you might be slowly erasing your brain’s ability to absorb new information as effectively. Worse, this doesn’t just affect older adults; the damage appears to begin even in young adulthood when diets are poor.
The message is clear: eating lots of added sugar could be more than a waistline issue, it could be sabotaging your brain’s capacity to learn, remember and adapt. If you want to keep your mind sharp, consider swapping high-sugar snacks for healthier choices like whole fruit, nuts and foods with natural sugars and fiber. Your brain will thank you.