If you're at high risk or are trying to reverse heart disease or prevent the recurrence of cancer, you probably need to make bigger changes in diet and lifestyle than someone who just wants to lose a few pounds and is otherwise healthy. If you just want to lower your cholesterol, weight or blood pressure, begin by making moderate changes.

Small changes in diet don't have much effect on preventing coronary heart disease and cancer. But bigger changes in diet and lifestyle may prevent heart attacks in almost everyone.

Dean Ornish Quotes