Metabolic syndrome is associated with memory deficits.A new animal study identifies a mechanism that might underpin this effect.Researchers show how a high-fat diet affects specific neural circuitry, thereby hindering memory formation.
Specifically, the study authors found that metabolic disturbances interfere with the healthy functioning of the hippocampus, which is crucial for memory formation.
If replicated in other studies, the scientists hope that their results might help guide interventions that can reduce this impact on cognitive performance. Metabolic syndrome, high-fat diets, and memory
Metabolic syndrome is a collection of health conditions that increase the risk of heart disease, stroke, and type 2 diabetes.
If an individual has three or more of the following five conditions, a doctor may diagnose them with metabolic syndrome:
- high levels of abdominal fat
- high levels of triglycerides in the blood
- low levels of HDL, or “good” cholesterol
- high blood sugar levels
- high blood pressure.
Research has shown that metabolic syndrome is associated with cognitive decline and poorer memory.
Additionally, according to the authors of the recent study, “epidemiological studies indicate that individuals with metabolic syndrome face an elevated risk of developing cognitive impairments and neurodegenerative diseases such as Alzheimer’s disease.”
As rates of metabolic syndrome continue to riseTrusted Source in the United States, understanding precisely how they influence brain health is an important topic of research.
The brain is a particularly energy-hungry organ. Despite making up just 2% of the body’s weight, it uses around 20% of the energy.
Because of this need for fuel, it is particularly sensitive to dietary intakes. As the authors of the recent study explain, “[a] growing body of evidence suggests that diet plays a crucial role in shaping cognitive function.”
In particular, they call out high-fat diets. Some small studiesTrusted Source have concluded that a high-fat diet is linked to poorer cognitive performance, even after just a short time. It seems that the hippocampus — a brain region vital for memory formation — might be particularly susceptibleTrusted Source to the issues caused by a high-fat diet.
