As the science advances, these articles get more positive. Recall the ridicule heaped upon the practice of calorie restriction even just a few years ago. "Some people are doing it strictly to enhance longevity. Others do it to avoid age-related disease, or because they already have diabetes, high cholesterol or clogged arteries and want to clean up their bodies by using diet. ... In rich countries, 90 percent of the population probably eats, on average, about 50 percent too much. ven if they were to reduce their calorie intake by half, they would still only be at baseline ... A wealth of scientific evidence has confirmed that maintaining that balance helps prevent type-2 diabetes, cardiovascular disease and cancer. But experiments with both animals and humans have also shown that pushing one's calorie intake 10 to 20 percent below that baseline threshold -- without lowering nutrients -- may provide additional health advantages. ... Will this add 10 years to your life? Nobody knows. But one thing is sure -- calorie restriction will help you reach your maximum lifespan potential, which is different for all of us depending on our genetic profile."