Eating a diet high in processed food increases the risk of depression, research suggests. What's more, people who ate plenty of vegetables, fruit and fish actually had a lower risk of depression, the University College London team found.
Data on diet among 3,500 middle-aged civil servants were compared with their emotional state five years later, a British journal reported. They split the participants into two types of diet--those who ate a diet largely based on whole food，which includes lots of fruit, vegetables and fish，and those who ate a mainly processed food diet, such as sweetened desserts, fried food, processed meat，refined grains and high fat dairy products After accounting for factors such as gender, age, education, physical activity, smoking habits and chronic(慢性的) diseases, they found a significant difference in the future depression risk with the different diets.
Those who ate the most wholefood had a 26% lower risk of future depression than those who ate the least wholefood. By contrast, people with a diet high in processed food had a 58％ higher risk of depression than those who ate a diet low in processed foods.
Study author Dr. Archana Singh Manoux pointed out there was a chance that the finding could be explained by lifestyle factor they had not accounted for. He also pointed in a paper that a Mediterranean diet was associated with a lower risk of depression, but the problem with that is if you live in Britain, the likelihood of you eating a Mediterranean diet is not very high.
Dr．Andrew McCulloeh, chief executive of the Mental Health Foundation, said, this study adds to an existing body of solid research that shows the strong links between what we eat and our mental health.
He added people's diets were becoming increasingly unhealthy. The UK population is consuming less nutritious, fresh produce and more saturated fats and sugars.
The text is mainly about         .

A．the increasingly unhealthy diet of the UK population B．the link between processed food and depression C．the relationship between physical and mental health D．the emotional state of the British People

A．They are of different ages from young to old. B．They are from different walks of life. C．They chose the diet they preferred. D．Their state are also affected by other factors.

A．It is difficult for most British people to have a Mediterranean diet. B．The Mediterranean diet is the most healthy in the world. C．Many studies have been done on the Mediterranean diet before. D．The Mediterranean diet is not good for depression.

A．our diets are closely related to our mental health B．the present study needs more facts and other information C．the UK population will become ill in the near future D．more saturated fats and sugars should be taken in

A．To tell people what a healthy diet actually is. B．To prove people’s diets are increasingly unhealthy. C．To encourage people to cut down on processed food. D．To introduce some experts on the research team.