Tara Spires-Jones
Director of the Centre for Discovery Brain Sciences at the University of Edinburgh, Group Leader in the UK Dementia Research Institute, and Past President of the British Neuroscience Association
A new study published by Du and colleagues observed that people who reported a high intake of high fat cheese in the 1990s had lower risk of developing dementia around 25 years later than people who did not eat cheese. While these are interesting data, this type of study cannot determine whether this association of reduced dementia risk was caused by the differences in cheese consumption. One of the biggest limitations of this study is the cheese consumption as recorded from a food diary and interview at one time point 25 years before the analysis of dementia diagnosis. It is highly likely that diet and other lifestyle factors changed in those 25 years. Strong evidence from across the field indicate that healthy diet, exercise, and cognitively stimulating activities (education, challenging jobs and hobbies etc) can boost brain resilience to diseases that cause dementia. There is not strong evidence for any individual food protecting people from dementia.