Weekly Home Cooking May Reduce Dementia Risk for Seniors
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A study of over 10,000 Japanese seniors suggests preparing meals at home at least once a week could significantly lower the risk of dementia. The association was strongest for those with few cooking skills, and the findings remained consistent after accounting for income, education, and lifestyle.
Facts First
- Cooking at home at least weekly was linked to a 23–27% lower dementia risk compared to cooking less often.
- The benefit appears strongest for novice cooks, with a weekly meal linked to a 67% lower risk.
- The findings were consistent after accounting for lifestyle, household income, and years of education.
- The study tracked cognitive health for six years in participants aged 65 and over.
- High culinary competency was linked to lower risk, but frequent cooking beyond weekly did not further reduce it.
What Happened
A study published in the Journal of Epidemiology & Community Health found that greater cooking frequency was associated with a lower risk of dementia in both men and women. The study analyzed data from 10,978 participants aged 65 and over from the Japan Gerontological Evaluation Study (JEGS). Cooking from scratch at least once a week was associated with a 23% lower risk in men and a 27% lower risk in women compared to cooking less than once a week. For participants with few cooking skills, cooking a meal from scratch at least once a week was associated with a 67% reduction in risk.
Why this Matters to You
If you or a loved one are over 65, incorporating a simple weekly home-cooked meal could be a practical, low-cost strategy to support long-term cognitive health. The study suggests this activity may be particularly beneficial if you have few culinary skills, offering a significant potential protective effect. Since the findings were independent of income, education, and other cognitive activities, this could be an accessible option for many seniors.
What's Next
The researchers noted that cooking more than once a week did not appear to further reduce risk for those already skilled. Future research may explore the specific mechanisms behind this association and whether similar benefits are observed in other populations. For now, the findings point to a simple, regular activity that may help maintain cognitive function.