Omega-3 Deficiency and Alzheimer’s Risk in Women
- Omega fatty acids could protect against Alzheimer's disease in women, new research has found.
- Analysis of lipids - fat molecules crucial for bodily functions - in blood samples revealed a significant decrease in unsaturated fats, notably those containing omega fatty acids, in...
- Scientists from King's College London and Queen Mary University of London found no ample variation in lipid molecule composition between men with and without Alzheimer's.
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omega-3 Fatty Acids May Offer Protective Effect Against Alzheimer’s in Women, Study Finds
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Omega fatty acids could protect against Alzheimer’s disease in women, new research has found.
Analysis of lipids – fat molecules crucial for bodily functions – in blood samples revealed a significant decrease in unsaturated fats, notably those containing omega fatty acids, in women diagnosed with Alzheimer’s disease compared to healthy women. This difference was not observed in men.
Scientists from King’s College London and Queen Mary University of London found no ample variation in lipid molecule composition between men with and without Alzheimer’s. This suggests lipids may play a different role in the disease’s development based on sex. Given the vital role fats play in brain health, this study offers a potential explanation for the higher rates of Alzheimer’s diagnoses among women.
Sex-Specific Lipid Differences in Alzheimer’s
The study, published on August 20, 2024, in Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association, marks the first to demonstrate a perhaps significant role for lipids in sex-based Alzheimer’s risk. The research team analyzed blood samples from individuals with and without Alzheimer’s disease, focusing on the composition of various lipid molecules.
“Women are disproportionately impacted by Alzheimer’s Disease and are more often diagnosed with the disease than men after the age of 80,” explained Dr. Cristina Legido-Quigley, senior author from King’s College London. “One of the most surprising things we found was that the differences in lipid composition were only apparent in women.”
The researchers hypothesize that these lipid differences could be linked to hormonal changes experienced by women throughout their lives, such as during menopause. These hormonal shifts can influence lipid metabolism and potentially impact brain health. Further research is needed to confirm this connection.
Why This Matters: The Gender gap in Alzheimer’s
Alzheimer’s disease affects women more frequently than men. According to the Alzheimer’s Association,women account for nearly two-thirds of Americans living with Alzheimer’s. Several factors contribute to this disparity, including longer lifespans and potential biological differences. This new research adds another layer to understanding this complex issue.
| Gender | Estimated Number of Americans with Alzheimer’s (2024) | Percentage of Total |
|---|---|---|
| Women | 3.6 million | 66% |
| Men | 1.8 million | 34% |