Nutrisystem D would be the way to go. It is a diet designed to avoid Diabetes, which in turn is quite healthy. Foods which aid in fighting diabetes automatically have to be low in carbohydrates, etc. Look into it.

A great book on the subject is called Eat to Live, by Dr. Joel Fuhrman. Best book about food, how to avoid diabetes, cancer, heart disease, hypertension and living a very long life. This book will change your life if you incorporate his dietary suggestions.