Rosalee Brown - DIETITIAN'S DESK

Although the importance of the brain to our well-being is acknowledged, we hesitate to discuss problems, whether real or perceived, associated with it or to even seek help. This is changing, however, and more and more individuals are interested in their mental well-being and are seeking solutions to problems and ways to prevent mental ill health.

A healthy lifestyle, including healthy choices of food, has been shown to have a positive impact on our body - the evidence is showing that food impacts the mind. A recent report out of the United Kingdom's 'Mental Health Foundation and Sustain: The Alliance for Better Food and Farming', which was compiled from a literature review of existing evidence and a national opinion poll in the U.K., reveals the importance of nutrition not only in the prevention of some mental health problems, but in their treatment.

Our brain's dry weight is made up of approximately 60 per cent fat, 20 per cent of which is made up of the two essential amino acids (omega 3 and 6) and their function is vital to the functioning of the brain and is found in equal amounts there.

Omega 3 and 6 imbalances

Over many years, the food consumption patterns of developed and developing countries have changed with the emergence of new and improved technology that impacts farming practices and food processing. Farm-reared animal proteins, such as poultry and fish, are higher in fats than previous years and the ratio of omega 3 to 6 fat profile has changed, resulting in higher omega 6 fats in these carcasses. Imbalances in the consumption of omega 3 and 6 are implicated in many mental health problems, including depression, memory and concentration difficulties.

Neurotransmitters, which facilitate communication in the brain, are made from amino acids which are often derived directly from the diet. Neurotransmitters influence our feeling of contentment, anxiety and overall cognitive function. Some foods are good sources of the neurotransmitters we need and we crave them. They provide a 'fix' and cause the brain to be less sensitive to its own transmitters. This cycle can cause the brain to 'down regulate' until the excess is metabolised, which can create a vicious cycle and also one of dependence on these outside sources.

Dimentia diet

Nuts, seeds and whole grains offer some protection from mental illness. - Norman Grindley/Deputy Chief Photographer

Further studies are needed in the area of dementia, but many studies have shown a positive association between saturated fat intake and the incidence of dementia and a negative relationship between polyunsaturated fat and dementia. Other studies have shown that persons with schizophrenia have lower levels of antioxidant enzymes in their brain and also intake lower levels of polyun-saturated fats. Please note that beneficial nutrients are found in foods and should not be consumed from mega doses of supplements.

The same healthy food habits which are important in lowering the risk of chronic non-communicable diseases and ensuring a healthy body are also important to a healthy mind.