A 25-year Swedish study of nearly 28,000 people found that regular consumption of high-fat cheese and cream was associated with a lower risk of dementia. This challenges current Alzheimer's prevention strategies, especially since an estimated 6.7 million older Americans have the disease, a number expected to double by 2060.

Does high-fat cheese reduce the risk of dementia?

I. Research suggests that a diet rich in high-fat dairy might lower the risk of dementia.

The study, published in *Neurology*, indicates that people who ate 50 grams or more of high-fat cheese daily had a lower risk of overall dementia and vascular dementia. Similar benefits were seen in those consuming at least 20 grams of high-fat cream daily. Low-fat dairy products, butter, and milk did not show these protective effects.

II. Reasons for Differences - Impact of Dairy Types and Nutritional Properties

According to Emily Sonestedt, the lead researcher, the difference lies in nutritional composition and dietary patterns. Fermented cheeses contain bioactive compounds that may help with inflammation and vascular health. Cream is often used in moderation with home-cooked meals. Milk, on the other hand, is consumed differently and lacks fermentation. Additionally, milk from grass-fed cows, richer in Omega-3 fatty acids, might offer more brain protection.

III. Precautions - Personalised Advice on Genetic Differences and Diet

III. Precautions - Personalised Advice on Genetic Differences and Diet

The study also found that people with the APOE ε4 gene variant, who are more sensitive to saturated fats, did not benefit from dairy consumption, a key point for personalized dietary advice. This was an observational study, meaning high-fat dairy might be a marker of a healthier lifestyle rather than a direct preventative measure. Experts caution against significant dietary changes based on a single study, suggesting that moderate consumption of cheese and cream is acceptable.