Wednesday, November 15, 2017

Research Update: The Relationships between Dementia and Nutrition

In 2014, researchers from the Global Observatory for Ageing and Dementia Care at King’s College London investigated the relationship between dementia and nutrition. The report, published by Alzheimer’s Disease International, touched on many links between nutrition and dementia, as summarized below.

First, a connection was found between nutrition, fetal development, and dementia, as the micronutrients and fats accumulated as a fetus can affect the development of the brain and nervous system. In turn, this may affect one’s risk of developing dementia in the future. 

In addition, researchers investigated the relationship between dementia and fats. While fats may be harmful for the brain if consumed in excess at mid-life, they can also act as an energy reserve to combat the neurodegenerative effects of dementia. However, further research is needed to explore the relationship between fats and cognitive function.

The report also explained that a Mediterranean diet may be key to preventing dementia. The Mediterranean diet, which consists of lots of vegetables, olive oil and fish, can reduce the risk of cardiovascular disease. As a result, this may potentially reduce the risk of dementia. There are many studies reporting a positive correlation between a Mediterranean diet and a lower risk of dementia; however, some studies have found no correlation at all.

Aside from nutrition and dementia prevention, there is also a link between malnutrition and patients with dementia. Weight loss is very commonly observed in dementia patients due to lower nutritional intake. It was found that dementia-related neurodegeneration may impact brain regions responsible for appetite control, thus contributing to the observed weight loss. The reason why malnutrition is a notable symptom of dementia is because in many cases, it proves to be fatal. This study suggests that eating habits of dementia patients can be improved through: caregiver education about the importance of nutrition, giving patients oral nutritional supplements, using feeding assistance tubes, and more.




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