Eating a diet high in processed food(加工食品)increases the risk of depression，research suggests．What's more，peopie 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(公务员)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 inc!udes 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 SinghManoux pointed out there was a chance the finding could be explained by fl lifestyle factor they had not accounted for．
There was a paper showing a Mediterranean diet was associated with a lower risk of depression，but the problem with that is if you live in Britain，the likelihood(可能性)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(含饱和脂肪酸的)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．fl healthy diet largely based on wholefood

What do we know about the participants?

A．They are of different ages from young to old．

B．They have been eating fl less heal thy diet these years．

C．Most of them prefer wholefood to processed food．

D．Those who ate wholefood generally were happier in the long term．

What can we learn from what Dr．Archana Singh Manoux said?

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．

Dr．Andrew McCulloch agrees that         .

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

Why might the author have written this text?

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 proceased food．

D．To introduce some experts on the research team．