英语的一片小作文

a good diet

We need a better diet as we get older. Although our calorie requirements decrease slightly because we are less active, our need for nutrients stays the same or may even increase.
Ideally, we should eat smaller servings of nutritionally dense foods, such as:

Fruit and vegetables
Wholewheat bread and other cereals
Fish and meat (or vegetarian alternatives including pulses)
Milk and dairy foods
It is difficult to be specific about how much to eat because the way we digest, absorb, use and excrete nutrients not only changes as we age, it also varies widely between individuals