Caffeine may reduce cognitive impact of obesity on the brain

Researchers at NOVA Medical School have identified a direct link between caffeine consumption and the mitigation of cognitive impairments caused by obesity. The study, published in the journal Pharmacological Research, suggests that caffeine may attenuate memory loss and other cognitive dysfunctions triggered by brain inflammation resulting from excess weight.

In a study involving Wistar rats, researchers observed that those on a high-fat, high-sugar diet developed increased weight, insulin resistance, and impaired memory and learning. These animals also showed higher markers of neuroinflammation and altered neuronal activity in the hippocampus. However, the group that received caffeine in their water during the latter stages of the study showed reduced signs of brain inflammation, improved insulin sensitivity, and better performance in spatial memory and recognition tests.

Lead researcher Sílvia Conde stated, “We found that caffeine reduces neuroinflammation, but also promotes neuronal activity in the hippocampus, which helps explain the observed effects on memory and cognition.”