The disease-fighting profile of apples provides a multitude of health benefits, including a potential decreased risk of cancer and heart disease. Several recent studies suggest apples may provide a "whole-body" health benefit.
A number of components in apples, most notably fiber and phytonutrients have been found in studies to lower blood cholesterol and improve bowel function, and may be associated with a reduced risk of ischemic heart disease, stroke, prostate cancer, type II diabetes and asthma. Preliminary research from Finland indicates diets with the highest intake of apple phytonutrients were associated with a 46 percent reduction in the incidence of lung cancer. Findings indicate that two apples a day or 12 ounces of 100% apple juice reduced the damaging effects of the “bad” LDL cholesterol.
Over the past four years, apple consumption has been linked with reduced cancer risk in several studies. A 2001 Mayo Clinic study indicated that quercetin, a flavonoid abundant in apples, helps prevent the growth of prostate cancer cells. A Cornell University study indicated phytochemicals in the skin of an apple inhibited the reproduction of colon cancer cells by 43 percent. The National Cancer Institute has reported that foods containing flavonoids like those found in apples may reduce the risk of lung cancer by as much as 50 percent.
Two recent British studies indicated that eating apples can improve lung health. A study of Welsh men indicated that people who ate at least five apples per week experience better lung function. Researchers at the University of Nottingham reported that those who ate five apples per week also had a lower risk for respiratory disease. In the Netherlands at the University of Groningen, apples were singled out as a fruit that could cut smokers’ risk of COPD (chronic obstructive pulmonary disease) in half. Scientists believe antioxidants found in apples may ward off disease by countering oxygen’s damaging effects on the body.
Researchers at the University of California-Davis recently reported that apples and apple juice may help protect arteries from harmful plaque build-up. In the first study conducted in humans, adults who added two apples, or 12 ounces of 100% apple juice, to their daily diet demonstrated a significant slowing of the cholesterol oxidation process that leads to plaque build-up - thereby giving the body more time to rid itself of cholesterol before it can cause harm.
There are many other benefits that I have not listed here.
Keep eating your apples.