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Preparing home-cooked meals at least once a week may reduce the risk of dementia in older adults by up to 30%, according to a novel observational study published in the Journal of Epidemiology & Community Health.
The research, conducted by Japanese scientists, analyzed data from over 11,000 adults aged 65 and older. It found that those who cooked homemade meals weekly had a significantly lower likelihood of developing dementia compared to those who did not engage in regular home cooking.
Among older adults who were new to cooking, the protective effect was even more pronounced, with a potential risk reduction of up to 70%. Researchers suggest this may be due to the combination of cognitive stimulation, physical activity involved in meal preparation—such as grocery shopping and food handling—and the nutritional benefits of home-cooked meals rich in vegetables, grains, and lean proteins.
The study highlights the role of productive, everyday activities in supporting brain health and delaying cognitive decline. Experts note that engaging in meaningful routines like cooking can support maintain mental agility and social connection, both of which are important factors in dementia prevention.
These findings add to growing evidence that lifestyle choices, including diet and daily engagement in purposeful tasks, play a meaningful role in reducing dementia risk. As populations age globally, promoting accessible, health-supportive habits like home cooking could become a valuable part of public health strategies aimed at preserving cognitive well-being in later life.
