Certain sets of words in the English language tend to confuse people. I have found the following to be among them:
HEALTHFUL / HEALTHY
The adjective healthful describes something, such as a nutritious food, that promotes good health. The adjective healthy describes a person, animal, or plant that is in good health.
Incorrect: I try to eat a healthy diet.
Correct: I try to eat a healthful diet.
If you want to be healthy, you would be wise to eat healthful foods and get plenty of exercise.
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