Fish on trial: Does this 'brain food' help prevent Alzheimer's disease?
Fatty fish has long been viewed as "brain food" that supports cognitive health through anti-inflammatory, antioxidant and vascular mechanisms. That has led researchers to ask whether the benefits of fatty fish might extend to Alzheimer's disease prevention. But the answer may not be that simple, according to a new study by scientists at the Jean Mayer USDA Human Nutrition Research Center on Aging…
A new study conducted by researchers at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University suggests that increased intake of fatty fish may not effectively lower the long-term risk of Alzheimer's disease. The study, titled "Sustained fish intake and 21-year Alzheimer's disease risk: a target trial emulation," used a method called target trial emulation to analyze long-term observational data.
While the research approach aimed to reduce biases commonly found in traditional observational studies, the results indicate that simply increasing fish consumption does not meaningfully lower the risk of Alzheimer's disease. The study leader, José Ordovás, emphasized that fish remains a healthy food, but the findings suggest it may not be a magic bullet for preventing Alzheimer's on its own.
The research highlights the challenges of studying long-term dietary interventions, such as Alzheimer's prevention, which typically require decades of data collection.
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