Why do we say some foods are healthy? They're healthful. If they were healthy, wouldn't they still be alive?
There are those who make a distinction between healthful, meaning "conducive
to health; wholesome or salutary: a healthful
healthy body; a healthy mind
a healthful diet
a healthy body; a healthy mind
"Healthful" sounds dry to my ear, but you can take your choice.
—The Fact Monster