Describe the optimal diet for older adults. Why is it sometimes difficult for them to eat this way?

A diet of nutritious foods, including fruits; whole grains; low-fat dairy products; leafy green vegetables; and healthy sources of protein, such as fish, nuts, beans, and chicken, can counter nutrition deficits common to older adulthood. However, this is easier said than done given that many older adults have a lifelong pattern of less healthy food preferences. More critically, many older adults lack access to healthy foods, because of difficulty shopping, stores that lack healthy food options, or affordable food choices.