請依下文回答第 16 題至第 20 題
        Scientists have cast new light on the effects our diet has on our mental health. Researchers say what weeat affects and alters our brain chemistry up 16 the age of 30. The research was conducted by a team ledby Lina Begdache, a professor of health and wellness studies. Researchers said that__ 17__  the link betweenour diet and diabetes, heart disease and obesity is well established, there is little research on the influence ourdietary intake has on mental health. The researchers also suggested that healthy eating, healthy practices, andexercising __18__ mental well-being.         The research was carried out via an anonymous internet-based survey. Professor Begdache found thatadults under 30 who ate fast food more than three times a week scored __19__     on levels of mental distress,anxiety and depression. She said that for adults over 30, the study found that eating less carbohydrates andmore fruit reduced anxiety and depression. Begdache pointed to research__20__how a Mediterranean dietwas as good for our brain as for our body. She said: “It has all the components that are important for the healthystructure of the brain.”
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