A college student comes to the student health center complaining of difficulty in concentrating during class and while studying. The diet that would contribute to this problem is one that contains mostly:
a.
fruit and vegetables.
b.
lean meat and fish.
c.
sandwiches and diet drinks.
d.
pasta and chicken.

b. Lean meat and fish.

Explanation:

The only energy source that the brain use is carbohydrates, these are present in fruits, vegetables, in the bread of a sandwich and the vegetables in it, and also in pasta. If a person has a diet that mostly consists of meat and fish the body is not having enough energy supplies for the function of the brain or for an effective function of other organs in the body that can obtain and use energy from other sources but is not as effective as the one that comes from carbohydrates.

b. lean meat and fish

Explanation:

The brain needs a steady fuel supply and it's main energy source is glucose which is the broken down form of carbohydrate. If the college student's diet consist of only lean meat and fish he will have difficulty in concentrating during class and while studying because the brain is running on low energy. Lean meat and fish are very low in carbohydrates while pasta, chicken, sandwiches, diet drinks, fruits and vegetables have moderate amount of carbohydrate that can be broken down to glucose and act as source of energy to the brain.

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