In a new study and report in UK it has been revealed that a increase in cases of mental health is due to shift in the way we eat over the years.
The Mental Health Foundation and food campaign group says that less nutritious diets have led to an increase in cases of depression, schizophrenia, attention deficit hyperactivity disorder (ADHD) and Alzheimer's disease.
One of the most important findings of the report was a drop in intake by most people of omega-3 fatty acids - so-called 'good fats' that can be found in oily fish and nuts - and an increase in the eating of foods containing omega-6 fatty acids, or 'bad fats'.
During the last 50 years the British population has gradually eaten less fresh produce and more saturated fats and sugars, all of which is said to be taking its toll on physical, as well as mental health.
Dr Andrew McCulloch, chief executive of the Mental Health Foundation, said, 'We are well aware the effect of diet upon out physical health, but we are only just beginning to understand how the brain, as an organ, is influenced by the nutrients it derives from the foods we eat, and how our diets have impact on our mental health. "
The research revealed that chickens reach their slaughter weight twice as fast as they did 30 years ago, increasing their fat content by a fifth from two per cent to 22 per cent.
The report found there has been a 34 per cent decline in vegetable consumption and a 59 per cent drop in fish intake in the last 60 years.
Only 13 per cent of men and 15 per cent of women eat at least five portions of fresh fruits and vegetables every day, according to the report.
Therefore the study says that we need to revamp our eating and farming ways and move towards a healthy diet.