Scientists discover how obesity may fuel Alzheimer’s disease
Researchers have uncovered a possible biological pathway connecting obesity to Alzheimer’s disease. Obesity appears to raise levels of certain fat molecules that can travel to the brain, disrupt its immune defenses, and promote harmful amyloid buildup. Correcting this fat imbalance improved memory and brain function in Alzheimer’s models.
New research indicates obesity may contribute to Alzheimer's disease through metabolic changes, particularly linked to high levels of fat molecules in the body. Houston Methodist researchers discovered how obesity increases the presence of phosphatidylethanolamines (PEs) in tissue, which are then transported to the brain and disrupt neurological functions.
These fat molecules interfere with the brain's immune system, weaken its defense, and promote the accumulation of amyloid proteins, a hallmark of Alzheimer's. The study, led by Stephen Wong and Li Yang, suggests that correcting this lipid imbalance might enhance brain function and cognitive performance in Alzheimer's models. While further research is needed for clinical applications, the findings open up potential avenues for early intervention for individuals at higher risk due to metabolic health issues. Alzheimer's affects over 6.5 million Americans, with numbers projected to rise sharply by 2060.
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