NYACK, N.Y. -- Diabetes is a health concern for millions of Americans each year. However, one out of three adults have prediabetes, or blood sugar levels above normal, yet nine out of 10 of them don’t even know they have it. Without intervention, 15 to 30 percent of people with prediabetes will develop type 2 diabetes within 5 years, resulting in an increased risk of heart attack and ...