Therefore, both healthy and healthful are correct in these contexts: a healthy climate, a healthful climate; a healthful diet, a healthy diet. <a href="http://encarta.msn.com/dictionary_/healthy.html">http://encarta.msn.com/dictionary_/healthy.html</a> , Word Usage healthy or healthful?It is sometimes argued that healthy should be used only to describe a living being in good health, and that healthful is the word for such things as habits or foods promoting