MIND Diet Linked to Slower Brain Aging
A modified version of the Mediterranean diet, known as the MIND diet, is associated with a slower rate of brain aging, according to new research.
The study, which included 1,647 middle-aged and older adults, found that those who adhered closely to the MIND diet experienced less brain tissue loss over time.
This effect was especially significant for gray matter, the tissue critical for cognitive functions like thinking, memory, and decision-making.
Participants with a more MIND-aligned diet also exhibited lower levels of ventricular enlargement, which indicates brain tissue loss.
Those who adhered closely to the MIND diet showed brain changes equivalent to an impressive 2.5 years of slower aging over the duration of the study, which lasted around 12 years on average. Dietary habits were self-reported, and participants also underwent MRI scans.
The researchers noted, “Foods recommended by the MIND diet, rich in antioxidants like berries and quality proteins such as poultry, may help reduce oxidative stress and lessen neuronal damage.” They also commented on the potential harms of fried foods high in unhealthy fats and trans fats, which can lead to inflammation and vascular damage.
The MIND diet is a blend of the Mediterranean diet and the Dietary Approaches to Stop Hypertension (DASH) diet, incorporating specific tweaks aimed at preventing cognitive decline. Prior research has suggested it may help reduce the risk of dementia and support cognitive health.
In the recent study, led by researchers from the Zhejiang University School of Medicine in China, participants weren’t instructed to follow a strict diet but were instead assessed on how closely their eating habits mirrored the MIND diet. Those who aligned more closely reaped greater benefits regarding brain aging.
It was noted that “gray matter atrophy and ventricle volume enlargement are proven markers of brain aging.” Gray matter, which contains neuronal cell bodies and synapses, is essential for memory and decision-making, while ventricle enlargement indicates brain tissue loss.
However, it’s worth noting that the research doesn’t definitively establish cause and effect. While various factors like age and education were controlled for, others—including sleep quality and genetic predispositions—were not tracked. It’s possible that there are influences connecting both diet and brain aging that were overlooked in this study.
Some findings were unexpected. For instance, wholegrains were linked to a more rapid decline in gray matter, while a greater cheese intake appeared to slow declines in brain health, despite cheese being a food recommended for moderation by the MIND diet.
This suggests that individual responses to the MIND diet may vary considerably, but overall, the study strengthens the connection between diet and brain health.
Previous research has indicated that dietary choices can influence the risk of developing neurodegenerative diseases like Alzheimer’s. The researchers propose that future studies could build on these findings with larger and more diverse populations.
They emphasize the necessity for more long-term studies to clarify how specific dietary patterns affect brain aging and degeneration, which can help shape future dietary guidelines aimed at enhancing brain health.
As the global population ages and neurodegenerative diseases become more prevalent, promoting the MIND diet could be a practical strategy for addressing these growing concerns.
The results have been published in the Journal of Neurology Neurosurgery & Psychiatry.
